TREADCO INC
SC 14D1, 1999-03-23
AUTOMOTIVE REPAIR, SERVICES & PARKING
Previous: YOUTH SERVICES INTERNATIONAL INC, SC 13D/A, 1999-03-23
Next: TREADCO INC, SC 13E3, 1999-03-23



<PAGE>   1
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
 
                                 SCHEDULE 14D-1
                   TENDER OFFER STATEMENT PURSUANT TO SECTION
                14(d)(1) OF THE SECURITIES EXCHANGE ACT OF 1934
                                      and
                                 SCHEDULE 13D/A
                               (Amendment No. 2)
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                 TREADCO, INC.
                           (Name of Subject Company)
                             ---------------------
 
                           ARKANSAS BEST CORPORATION
                                    (Bidder)
                             ---------------------
 
                     Common Stock, Par Value $.01 Per Share
            (Including The Associated Common Stock Purchase Rights)
                         (Title of Class of Securities)
                             ---------------------
 
                                  894545 10 2
                     (CUSIP NUMBER OF CLASS OF SECURITIES)
 
                               RICHARD F. COOPER
                       VICE PRESIDENT AND GENERAL COUNSEL
                           ARKANSAS BEST CORPORATION
                            3801 OLD GREENWOOD ROAD
                           FORT SMITH, ARKANSAS 72903
                                 (501) 785-6000
          (Name, Address and Telephone Number of Person Authorized to
            Receive Notices and Communications on Behalf of Bidder)
 
                                   Copies to:
                             ALAN J. BOGDANOW, ESQ.
                             HUGHES & LUCE, L.L.P.
                                1717 MAIN STREET
                                   SUITE 2800
                              DALLAS, TEXAS 75201
                                 (214) 939-5500
                             ---------------------
 
                           CALCULATION OF FILING FEE
 
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------
           TRANSACTION VALUATION(1)                       AMOUNT OF FILING FEE(2)
- ---------------------------------------------------------------------------------------------
<S>                                            <C>
                $25,785,495.00                                   $5,158.00
- ---------------------------------------------------------------------------------------------
</TABLE>
 
(1) Calculated by multiplying $9.00, the per share tender offer price, by
    2,865,055 shares of Common Stock.
 
(2) 1/50 of 1% of Transaction Value.
 
[ ] Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
    and identify the filing with which the offsetting fee was previously paid.
    Identify the previous filing by registration statement number, or the form
    or schedule and the date of its filing.
 
<TABLE>
  <S>                                                  <C>
  Amount Previously Paid: None                         Filing Party: N/A
  Form or Registration No.: N/A                        Date Filed: N/A
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                14D-1 AND 13D/A
 
<TABLE>
<S>                                           <C>                                   <C>
- ------------------------------------------
  CUSIP NO. 894545-10-2
- ------------------------------------------
</TABLE>
 
- --------------------------------------------------------------------------------
 
<TABLE>
<C>        <S>
    1      NAME OF REPORTING PERSONS:
           ARKANSAS BEST CORPORATION
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON: 71-0673405
- -----------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF                           (a) [
           ]
           A MEMBER OF A GROUP                                 (b) [X]
- -----------------------------------------------------------------------
    3      SEC USE ONLY
- -----------------------------------------------------------------------
    4      SOURCES OF FUNDS
           BK and WC
- -----------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF                                     [
           ]
           LEGAL PROCEEDINGS IS REQUIRED
           PURSUANT TO ITEMS 2(e) or 2(f)
- -----------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF
           ORGANIZATION: DELAWARE
- -----------------------------------------------------------------------
    7      AGGREGATE AMOUNT BENEFICIALLY
           OWNED BY EACH REPORTING PERSON: 3,629,975(1) SHARES
- -----------------------------------------------------------------------
    8      CHECK IF THE AGGREGATE AMOUNT                              [
           ]
           IN ROW (7) EXCLUDES CERTAIN SHARES
- -----------------------------------------------------------------------
    9      PERCENT OF CLASS REPRESENTED BY
           AMOUNT IN ROW (7): 71.6%(1)
- -----------------------------------------------------------------------
   10      TYPE OF REPORTING PERSON:
           CO
- -----------------------------------------------------------------------
</TABLE>
 
- ---------------
 
(1) Pursuant to a letter dated January 22, 1999 (the "Support Agreement"),
    Shapiro Capital Management Company, Inc., granted Arkansas Best Corporation
    ("ABC") a proxy to vote under certain circumstances 1,132,775 shares
    (approximately 21%) of the common stock, $.01 par value per share (the
    "Common Stock"), of Treadco, Inc. (the "Company"). The number of shares
    reported above to be beneficially owned by ABC and the percentage thereof in
    relation to the outstanding Common Stock of the Company includes shares of
    Common Stock subject to the Support Agreement. The Support Agreement is
    described more fully under "INTRODUCTION" and "SPECIAL FACTORS -- Background
    of the Offer and the Merger" of the Offer to Purchase dated March 23, 1999
    referenced herein. Parent owns 2,497,200 shares of Common Stock representing
    approximately 49.2% of the Company.
                                Page 2 of 7 Pages
<PAGE>   3
 
     This Tender Offer Statement on Schedule 14D-1 (the "Statement") relates to
a tender offer (the "Offer") by Arkansas Best Corporation, a Delaware
corporation ("Parent"), to purchase all of the outstanding shares of the common
stock, par value $.01 per share (the "Common Stock") including the associated
common stock purchase rights (the "Rights" and, together with the Common Stock,
the "Shares") of Treadco, Inc., a Delaware corporation (the "Company"), at a
purchase price of $9.00 per Share, net to the seller in cash, without interest,
upon the terms and subject to the conditions set forth in the Offer to Purchase,
dated March 23, 1999 (the "Offer to Purchase"), and the related Letter of
Transmittal, copies of which are filed as Exhibits (a)(l) and (a)(2) hereto,
respectively, and which are incorporated herein by reference. This Statement
also amends and supplements the Schedule 13D of Parent, originally filed on
September 18, 1998, as amended by Amendment No. 1 thereto filed on January 26,
1999.
 
     Parent is concurrently filing a Rule 13e-3 Transaction Statement on
Schedule 13E-3 (the "Schedule 13E-3") with the Securities and Exchange
Commission. The information set forth in the Schedule 13E-3, including all
exhibits thereto, is hereby expressly incorporated herein by reference.
 
ITEM 1. SECURITY AND SUBJECT COMPANY.
 
     (a) The name of the subject company is Treadco, Inc., a Delaware
corporation, which has its principal executive offices at 1101 South 21st
Street, Fort Smith, Arkansas 72901.
 
     (b) The information set forth in the Offer to Purchase under "INTRODUCTION"
is incorporated herein by reference.
 
     (c) The information set forth in the Offer to Purchase under "THE TENDER
OFFER -- Price Range of the Shares; Dividends" is incorporated herein by
reference.
 
ITEM 2. IDENTITY AND BACKGROUND.
 
     (a)-(d) and (g) This Statement is being filed by the Parent. Information
concerning the principal business and the address of the principal offices of
the Parent is set forth in the Offer to Purchase under "THE TENDER
OFFER -- Certain Information Concerning Parent and Newco" and is incorporated
herein by reference. The names, business addresses, present principal
occupations or employment, material occupations, positions, offices or
employment during the last five years and citizenship of the directors and
executive officers of the Parent, Newco (as defined below) and the Company are
set forth in ANNEXES C and D of the Offer to Purchase and are incorporated
herein by reference.
 
     (e) and (f) The information set forth in the Offer to Purchase under "THE
TENDER OFFER -- Certain Information Concerning Parent and Newco" is incorporated
herein by reference.
 
ITEM 3. PAST CONTACTS, TRANSACTIONS OR NEGOTIATIONS WITH THE SUBJECT COMPANY.
 
     (a) and (b) The information set forth in the Offer to Purchase
"INTRODUCTION," "SPECIAL FACTORS -- Background of the Transaction,"
"-- Interests of Certain Persons in the Offer and the Merger," "-- The Merger
Agreement," and "THE TENDER OFFER -- Certain Information Concerning Parent and
Newco" and "-- Certain Information Concerning the Company" is incorporated
herein by reference.
 
ITEM 4. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.
 
     (a)-(c) The information set forth in the Offer to Purchase under "THE
TENDER OFFER -- Source and Amount of Funds" is incorporated herein by reference.
 
ITEM 5. PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE BIDDER.
 
     (a)-(e) The information set forth in the Offer to Purchase under "SPECIAL
FACTORS -- Purpose and Structure of the Transaction" and "-- Plans for the
Company After the Offer and the Merger" is incorporated herein by reference.
 
                                Page 3 of 7 Pages
<PAGE>   4
 
     (f) and (g) The information set forth in the Offer to Purchase under
"SPECIAL FACTORS -- Certain Effects of the Offer and the Merger" is incorporated
herein by reference.
 
ITEM 6. INTEREST IN SECURITIES OF THE SUBJECT COMPANY.
 
     (a) and (b) The information set forth in the Offer to Purchase under
"INTRODUCTION," and "SPECIAL FACTORS -- Background of the Transaction" and
"-- Interests of Certain Persons in the Offer and the Merger" is incorporated
herein by reference.
 
ITEM 7.CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
       THE SUBJECT COMPANY'S SECURITIES.
 
     The information set forth in the Offer to Purchase under "INTRODUCTION,"
and "SPECIAL FACTORS -- Background of the Transaction" and "-- Interests of
Certain Persons in the Offer and the Merger" is incorporated herein by
reference.
 
ITEM 8. PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED.
 
     The information set forth in the Offer to Purchase under "INTRODUCTION,"
"SPECIAL FACTORS -- Background of the Offer and the Merger," and "THE TENDER
OFFER -- Fees and Expenses" is incorporated herein by reference.
 
ITEM 9. FINANCIAL STATEMENTS OF CERTAIN BIDDERS.
 
     The information set forth the Offer to Purchase under "THE TENDER
OFFER -- Certain Information Concerning Parent and Newco" is incorporated herein
by reference. The incorporation by reference herein of the above-referenced
financial information does not constitute an admission that such information is
material to a decision by a stockholder of the Company whether to sell, tender
or hold Shares being sought in the Offer.
 
ITEM 10. ADDITIONAL INFORMATION.
 
     (a) The information set forth in the Offer to Purchase under "THE TENDER
OFFER -- Certain Information Concerning Parent and Newco" is incorporated herein
by reference.
 
     (b) and (c) The information set forth in the Offer to Purchase under "THE
TENDER OFFER -- Certain Conditions of the Offer" and "-- Certain Legal Matters;
Regulatory Matters" is incorporated herein by reference.
 
     (d) The information set forth in the Offer to Purchase under "SPECIAL
FACTORS -- Certain Effects of the Offer and the Merger" is incorporated herein
by reference.
 
     (e) None.
 
     (f) The information set forth in the Offer to Purchase and the Letter of
Transmittal, to the extent not otherwise incorporated herein by reference, is
incorporated herein by reference.
 
ITEM 11. MATERIAL TO BE FILED AS EXHIBITS.
 
<TABLE>
<C>                      <S>
        (a)(l)           -- Offer to Purchase.
        (a)(2)           -- Letter of Transmittal.
        (a)(3)           -- Notice of Guaranteed Delivery.
        (a)(4)           -- Letter to Brokers, Dealers, Banks, Trust Companies and
                            Other Nominees.
        (a)(5)           -- Letter to Clients for use by Brokers, Dealers, Banks,
                            Trust Companies and Other Nominees.
        (a)(6)           -- Guidelines for Certification of Taxpayer Identification
                            Number on Substitute Form W-9.
</TABLE>
 
                                Page 4 of 7 Pages
<PAGE>   5
<TABLE>
<C>                      <S>
        (a)(8)           -- Press Release of Parent dated January 22, 1999
                            (previously filed as Exhibit 3 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (a)(9)           -- Press Release of the Company dated January 22, 1999
                            (previously filed as Exhibit 4 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (a)(10)          -- Joint Press Release dated March 16, 1999 issued by Parent
                            and the Company.
        (b)(1)           -- $250,000,000 Credit Agreement dated as of June 12, 1998
                            among Parent and Societe Generale, Southwest Agency, as
                            Administrative Agent and Bank of America National Trust
                            Savings Association and Wells Fargo Bank (Texas), N.A.,
                            as Co-Documentation Agents (previously filed as Exhibit
                            10.2 to Parent's Form 10-Q filed with the Securities and
                            Exchange Commission on August 6, 1998, File No. 0-19969,
                            and incorporated herein by reference).
        (c)(l)           -- Agreement and Plan of Merger dated as of March 15, 1999
                            among Parent, Newco and the Company (included as ANNEX B
                            to the Offer to Purchase filed as Exhibit(a)(1) hereto).
        (c)(2)           -- Support Agreement dated as of January 22, 1999 between
                            Parent and Shapiro Capital Management Company, Inc.
                            (previously filed as Exhibit 1 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (c)(3)           -- Letter dated January 22, 1999 from Parent to the Board of
                            Directors of the Company (previously filed as Exhibit 2
                            to Amendment No. 1 to the Schedule 13D of Parent filed
                            with the Securities and Exchange Commission on January
                            26, 1999 and incorporated herein by reference).
        (d)              -- Not applicable.
        (e)              -- Not applicable.
        (f)              -- Not applicable.
</TABLE>
 
                                Page 5 of 7 Pages
<PAGE>   6
 
                                   SIGNATURES
 
     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.
 
Dated: March 23, 1999
 
                                          ARKANSAS BEST CORPORATION
 
                                          By:     /s/ DAVID E. LOEFFLER
                                            ------------------------------------
                                            Name: David E. Loeffler
                                            Title: Vice President and Chief
                                              Financial Officer
 
                                Page 6 of 7 Pages
<PAGE>   7
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                                      ITEM
        -------                                      ----
<C>                      <S>
        (a)(l)           -- Offer to Purchase.
        (a)(2)           -- Letter of Transmittal.
        (a)(3)           -- Notice of Guaranteed Delivery.
        (a)(4)           -- Letter to Brokers, Dealers, Banks, Trust Companies and
                            Other Nominees.
        (a)(5)           -- Letter to Clients for use by Brokers, Dealers, Banks,
                            Trust Companies and Other Nominees.
        (a)(6)           -- Guidelines for Certification of Taxpayer Identification
                            Number on Substitute Form W-9.
        (a)(8)           -- Press Release of Parent dated January 22, 1999
                            (previously filed as Exhibit 3 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (a)(9)           -- Press Release of the Company dated January 22, 1999
                            (previously filed as Exhibit 4 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (a)(10)          -- Joint Press Release dated March 16, 1999 issued by Parent
                            and the Company.
        (b)(1)           -- $250,000,000 Credit Agreement dated as of June 12, 1998
                            among Parent and Societe Generale, Southwest Agency, as
                            Administrative Agent and Bank of America National Trust
                            Savings Association and Wells Fargo Bank (Texas), N.A.,
                            as Co-Documentation Agents (previously filed as Exhibit
                            10.2 to Parent's Form 10-Q filed with the Securities and
                            Exchange Commission on August 6, 1998, File No. 0-19969,
                            and incorporated herein by reference).
        (c)(l)           -- Agreement and Plan of Merger dated as of March 15, 1999
                            among Parent, Newco and the Company (included as ANNEX B
                            to the Offer to Purchase filed as Exhibit(a)(1) hereto).
        (c)(2)           -- Support Agreement dated as of January 22, 1999 between
                            Parent and Shapiro Capital Management Company, Inc.
                            (previously filed as Exhibit 1 to Amendment No. 1 to the
                            Schedule 13D of Parent filed with the Securities and
                            Exchange Commission on January 26, 1999 and incorporated
                            herein by reference).
        (c)(3)           -- Letter dated January 22, 1999 from Parent to the Board of
                            Directors of the Company (previously filed as Exhibit 2
                            to Amendment No. 1 to the Schedule 13D of Parent filed
                            with the Securities and Exchange Commission on January
                            26, 1999 and incorporated herein by reference).
        (d)              -- Not applicable.
        (e)              -- Not applicable.
        (f)              -- Not applicable.
</TABLE>
 
                                Page 7 of 7 Pages

<PAGE>   1
 
                           OFFER TO PURCHASE FOR CASH
                     ALL OUTSTANDING SHARES OF COMMON STOCK
            (INCLUDING THE ASSOCIATED COMMON STOCK PURCHASE RIGHTS)
 
                                       OF
 
                                 TREADCO, INC.
 
                                       AT
 
                              $9.00 NET PER SHARE
 
                                       BY
 
                           ARKANSAS BEST CORPORATION
 
    THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK
      CITY TIME, ON TUESDAY, APRIL 20, 1999, UNLESS THE OFFER IS EXTENDED.
 
    THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE BEING VALIDLY
TENDERED AND NOT WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER THAT NUMBER OF
SHARES REPRESENTING AT LEAST 66 2/3% OF ALL OUTSTANDING SHARES ON A FULLY
DILUTED BASIS WHEN AGGREGATED WITH THE SHARES OWNED BY ARKANSAS BEST CORPORATION
("PARENT"), WHICH CURRENTLY OWNS APPROXIMATELY 47% OF THE OUTSTANDING SHARES ON
A FULLY DILUTED BASIS, AND (II) THE EXPIRATION OR TERMINATION OF ALL APPLICABLE
WAITING PERIODS UNDER THE HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976,
AS AMENDED. THE OFFER IS ALSO SUBJECT TO OTHER TERMS AND CONDITIONS.
 
    THE BOARD OF DIRECTORS OF TREADCO, INC. (THE "COMPANY"), UPON THE
RECOMMENDATION OF A SPECIAL COMMITTEE OF INDEPENDENT DIRECTORS, HAS UNANIMOUSLY
APPROVED THE OFFER AND THE MERGER REFERRED TO HEREIN AND DETERMINED THAT THE
OFFER AND THE MERGER, TAKEN TOGETHER, ARE FAIR TO, AND IN THE BEST INTERESTS OF,
THE STOCKHOLDERS OF THE COMPANY (OTHER THAN PARENT) AND RECOMMENDS THAT
STOCKHOLDERS OF THE COMPANY ACCEPT THE OFFER AND TENDER THEIR SHARES.
                             ---------------------
 
                                   IMPORTANT
 
    Any stockholder desiring to tender all or any portion of such stockholder's
shares of common stock, par value $.01 per share of the Company (including the
associated common stock purchase rights) (collectively, the "Shares") should
either (i) complete and sign the Letter of Transmittal or a facsimile copy
thereof in accordance with the instructions in the Letter of Transmittal, have
such stockholder's signature thereon guaranteed if required by Instruction 1 to
the Letter of Transmittal, mail or deliver the Letter of Transmittal or such
facsimile and any other required documents to the Depositary and either deliver
the certificates for such Shares to the Depositary along with the Letter of
Transmittal or facsimile or deliver such Shares pursuant to the procedure for
book-entry transfer set forth in "THE TENDER OFFER -- Procedure for Tendering
Shares" or (ii) request such stockholder's broker, dealer, bank, trust company
or other nominee to effect the transaction for such stockholder. A stockholder
having Shares registered in the name of a broker, dealer, bank, trust company or
other nominee must contact such broker, dealer, bank, trust company or other
nominee if such stockholder desires to tender such Shares.
 
    A stockholder who desires to tender Shares and whose certificates for such
Shares are not immediately available or who cannot comply in a timely manner
with the procedure for book-entry transfer, or who cannot deliver all required
documents to the Depositary prior to the expiration of the Offer, may tender
such Shares by following the procedure for guaranteed delivery set forth in "THE
TENDER OFFER -- Procedure for Tendering Shares," including the Notice of
Guaranteed Delivery.
 
    Questions and request for assistance or for additional copies of this Offer
to Purchase, the Letter of Transmittal and the Notice of Guaranteed Delivery may
be directed to the Information Agent at the address and telephone number set
forth on the back cover of this Offer to Purchase.
 
    THIS TRANSACTION HAS NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE FAIRNESS OR MERITS OF
SUCH TRANSACTION NOR UPON THE ACCURACY OR ADEQUACY OF INFORMATION CONTAINED IN
THIS DOCUMENT. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.
 
March 23, 1999
 
                    THE INFORMATION AGENT FOR THE OFFER IS:
                             D.F. KING & CO., INC.
<PAGE>   2
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                               PAGE
                                                               ----
<S>                                                            <C>
INTRODUCTION................................................     1
SPECIAL FACTORS.............................................     3
  Background of the Offer and the Merger....................     3
  Recommendation of the Special Committee and the Board of
     Directors; Fairness of the Offer and the Merger........     7
  Opinion of Financial Advisor..............................     9
  Position of Parent Regarding Fairness of the Offer and the
     Merger.................................................    12
  Certain Projections.......................................    13
  Purpose and Structure of the Transaction..................    14
  Plans for the Company After the Offer and the Merger......    14
  Certain Effects of the Offer and the Merger...............    14
  Interests of Certain Persons in the Offer and the
     Merger.................................................    16
  The Merger Agreement......................................    18
  Dissenters' Rights........................................    24
  Certain Federal Income Tax Consequences...................    25
THE TENDER OFFER............................................    25
  Terms of the Offer........................................    25
  Procedure for Tendering Shares............................    27
  Withdrawal Rights.........................................    29
  Acceptance for Payment and Payment for Shares.............    30
  Price Range of the Shares; Dividends......................    31
  Certain Information Concerning Parent and Newco...........    31
  Certain Information Concerning the Company................    33
  Available Information.....................................    35
  Source and Amount of Funds................................    35
  Dividends and Distributions...............................    36
  Certain Conditions of the Offer...........................    36
  Certain Legal Matters; Regulatory Matters.................    38
  Fees and Expenses.........................................    39
  Miscellaneous.............................................    40
ANNEXES
  ANNEX A -- Opinion of Stephens Inc........................   A-1
  ANNEX B -- Agreement and Plan of Merger...................   B-1
  ANNEX C -- Directors and Executive Officers of Parent and
     Newco..................................................   C-1
  ANNEX D -- Directors and Executive Officers of the
     Company................................................   D-1
  ANNEX E -- Text of Section 262 of the General Corporation
     Law of the State of Delaware...........................   E-1
</TABLE>
 
                                        i
<PAGE>   3
 
To the Holders of Common Stock of Treadco, Inc.:
 
                                  INTRODUCTION
 
     Arkansas Best Corporation, a Delaware corporation ("Parent") hereby offers
to purchase all outstanding shares of common stock, par value $.01 per share
(the "Common Stock"), including the associated common stock purchase rights (the
"Rights" and together with the Common Stock, the "Shares") issued pursuant to
the Rights Agreement (as defined below), of Treadco, Inc., a Delaware
corporation (the "Company"), at $9.00 per Share (the "Offer Price"), net to the
seller in cash, without interest, upon the terms and subject to the conditions
set forth in this Offer to Purchase and in the related Letter of Transmittal
(which, together with any amendments or supplements hereto or thereto,
collectively constitute the "Offer").
 
     Tendering stockholders will not be obligated to pay brokerage fees or
commissions or, except as set forth in Instruction 6 of the Letter of
Transmittal, transfer taxes on the purchase of Shares pursuant to the Offer.
Parent will pay all fees and expenses of Harris Trust Company of New York, which
is acting as the Depositary (the "Depositary"), and D.F. King & Co., Inc. which
is acting as Information Agent (the "Information Agent"), incurred in connection
with the Offer. See "THE TENDER OFFER -- Fees and Expenses."
 
     THE BOARD OF DIRECTORS OF THE COMPANY (THE "BOARD"), BASED, AMONG OTHER
THINGS, ON THE UNANIMOUS RECOMMENDATION OF A SPECIAL COMMITTEE OF INDEPENDENT
DIRECTORS OF THE BOARD (THE "SPECIAL COMMITTEE"), HAS UNANIMOUSLY APPROVED THE
OFFER AND THE MERGER (AS DEFINED BELOW) AND DETERMINED THAT THE OFFER AND THE
MERGER, TAKEN TOGETHER, ARE FAIR TO, AND IN THE BEST INTERESTS OF, THE
STOCKHOLDERS OF THE COMPANY (OTHER THAN PARENT) AND RECOMMENDS THAT STOCKHOLDERS
OF THE COMPANY ACCEPT THE OFFER AND TENDER THEIR SHARES PURSUANT TO THE OFFER.
 
     The Special Committee was recently formed to review and consider a proposal
(the "Proposal") from Parent, which currently owns approximately 49% of the
outstanding Shares (47% of the outstanding Shares on a fully diluted basis),
that the Shares not owned by Parent be acquired for $9.00 in cash per Share.
Stephens Inc., financial advisor to the Special Committee ("Stephens"), has
delivered to the Special Committee and the Board its written opinion to the
effect that, as of the date of such opinion, the $9.00 in cash to be received by
the holders of the Shares (other than Parent and its affiliates, directors,
officers and employees of the Company, and any holders of more than 10% of the
aggregate Shares outstanding (the "Disinterested Stockholders")) in each of the
Offer and the Merger is fair to the Disinterested Stockholders, from a financial
point of view. Such opinion is set forth in full as ANNEX A hereto. Stockholders
should read the full text of Stephens' opinion for a description of the
assumptions made, matters considered and procedures followed in rendering such
opinion. See "SPECIAL FACTORS -- Opinion of Financial Advisor." See "SPECIAL
FACTORS -- Recommendation of the Special Committee and the Board of Directors;
Fairness of the Offer and the Merger" for the various factors considered by the
Special Committee in approving the Offer and the Merger and in unanimously
recommending that the Board approve the Offer and the Merger.
 
     The Company has filed with the Securities and Exchange Commission (the
"Commission") a Solicitation/Recommendation Statement on Schedule 14D-9 under
the Securities Exchange Act of 1934, as amended (the "Exchange Act") which is
being mailed to stockholders of the Company herewith.
 
     THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE BEING VALIDLY
TENDERED AND NOT WITHDRAWN PRIOR TO THE EXPIRATION DATE (AS DEFINED IN "THE
TENDER OFFER -- TERMS OF THE OFFER") THAT NUMBER OF SHARES REPRESENTING AT LEAST
66 2/3% OF ALL OUTSTANDING SHARES ON A FULLY DILUTED BASIS WHEN AGGREGATED WITH
THE SHARES OWNED BY PARENT, WHICH CURRENTLY OWNS APPROXIMATELY 47% OF THE
OUTSTANDING SHARES ON A FULLY DILUTED BASIS (THE "MINIMUM CONDITION"), AND (II)
THE EXPIRATION OR TERMINATION OF ALL APPLICABLE WAITING PERIODS UNDER THE
HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976, AS AMENDED (THE "HSR
ACT"). THE OFFER IS ALSO SUBJECT
 
                                        1
<PAGE>   4
 
TO OTHER TERMS AND CONDITIONS. SEE "THE TENDER OFFER -- CERTAIN CONDITIONS OF
THE OFFER."
 
     The Offer is being made pursuant to the Agreement and Plan of Merger dated
as of March 15, 1999 (the "Merger Agreement"), among Parent, Treadco Acquisition
Corporation, a Delaware corporation and wholly-owned subsidiary of Parent
("Newco"), and the Company pursuant to which, following the consummation of the
Offer and the satisfaction or waiver of certain conditions, Newco will be merged
with and into the Company, with the Company surviving the merger (as such, the
"Surviving Corporation") as a wholly-owned subsidiary of Parent (the "Merger"
and together with the Offer, the "Transaction"). A copy of the Merger Agreement
is attached hereto as ANNEX B.
 
     In the Merger, each outstanding Share (other than Shares owned by (i)
Parent, Newco, the Company, or any direct or indirect subsidiary of Parent or
(ii) stockholders of the Company, if any, who are entitled to and who properly
exercise dissenters' rights under Delaware law) will be converted into the right
to receive the per Share price paid in the Offer in cash, without interest (the
"Merger Consideration"). The Merger is subject to a number of conditions,
including approval by stockholders of the Company. Under the Company's
certificate of incorporation and Delaware law, the approval of the affirmative
vote of the holders of the Shares representing 66 2/3% of the outstanding Shares
is required to approve and adopt the Merger Agreement and the Merger. See
"SPECIAL FACTORS -- The Merger Agreement."
 
     As of March 10, 1999, there were 5,072,255 shares issued and outstanding
and 290,000 shares reserved for issuance upon the exercise of outstanding stock
options. Parent currently owns 2,497,200 shares (the "Parent Shares").
Accordingly, Parent believes that the Minimum Condition will be satisfied if
approximately 1,077,637 shares are validly tendered and not withdrawn prior to
the Expiration Date. If the Minimum Condition is satisfied and Parent accepts
for payment Shares tendered pursuant to the Offer, Parent will be able to effect
the Merger without the affirmative vote of any other stockholder of the Company.
 
     Immediately prior to the delivery of the Proposal by Parent to the Company,
Shapiro Capital Management Company, Inc. ("Shapiro Capital") entered into an
agreement with Parent (the "Support Agreement"), which, among other things,
granted Parent a proxy to vote 1,132,775 shares (approximately 21% of the
outstanding Shares on a fully diluted basis) beneficially owned by Shapiro
Capital for the approval of the Merger and against any corporate action the
consummation of which would violate, frustrate the purpose of, or prevent or
delay the Merger (the "Shapiro Proxy"). In the Support Agreement, Shapiro
Capital reserves the right to tender all Shares owned by it pursuant to the
Offer. Based on the number of Shares subject to the Shapiro Proxy when
aggregated with the Parent Shares, Parent currently has the voting power to
effect the Merger without the affirmative vote of any other stockholder of the
Company. See "SPECIAL FACTORS -- Background of the Offer and the Merger" for a
further description of the Support Agreement.
 
     In connection with the execution of the Merger Agreement, the Company
amended the Rights Agreement, dated as of September 1, 1991 between the Company
and NCNB Texas National Bank (as amended, the "Rights Agreement") governing the
Rights to purchase shares of Common Stock at $60.00 per share issued under the
Company's Rights Agreement, to provide that the Offer would not constitute an
event resulting in a "Distribution Date" (as such term is defined in the Rights
Agreement). The Rights Agreement prior to this amendment generally provided that
the Rights would not be applicable to any acquisition of the Company by Parent
or an affiliate thereof.
 
     Certain federal income tax consequences of the sale of Shares pursuant to
the Offer and the exchange of Shares for the Merger Consideration pursuant to
the Merger are described in "SPECIAL FACTORS -- Certain Federal Income Tax
Considerations."
 
     THIS OFFER TO PURCHASE AND THE RELATED LETTER OF TRANSMITTAL CONTAIN
IMPORTANT INFORMATION AND SHOULD BE READ IN THEIR ENTIRETY BEFORE ANY DECISION
IS MADE WITH RESPECT TO THE OFFER OR THE MERGER.
 
                                        2
<PAGE>   5
 
                                SPECIAL FACTORS
 
BACKGROUND OF THE OFFER AND THE MERGER
 
     The Company was formed in June 1991 under Delaware Law as a wholly-owned
subsidiary of Parent as the successor to the truck tire retreading and new tire
sales business previously developed and conducted by another wholly-owned
subsidiary of Parent. In September 1991, the Company sold 2.5 million Shares and
Parent sold 179,300 Shares in an underwritten public offering at an initial
public offering price of $16.00 per Share. The offering was underwritten in part
by Morgan Stanley & Co. Incorporated ("Morgan Stanley"), which is acting as
financial advisor to Parent in connection with the Transaction. The Company
realized $37.2 million and Parent realized $2.7 million in connection with the
sale, after the payment of the underwriters' discount. The Company proceeds were
used to repay indebtedness under the Company's credit facility and indebtedness
owed to Parent, and Parent used its proceeds for general corporate purposes. The
initial public offering of the Company reduced Parent's ownership of the Company
to approximately 46%.
 
     In the first quarter of 1998, Parent began an evaluation of its then 46%
investment in the Company. The evaluation process focused on, among other
things, the performance of the Company, the costs incurred by the Company with
respect to its status as a public company, lower interest rates available to
Parent under its credit agreement, lower state income tax costs and other tax
benefits available to Parent if the Company were a wholly-owned subsidiary.
Parent also reviewed the Company's operating ratios for periods from 1990 to
1994, which were significantly better than 1995 and subsequent years. This
evaluation resulted in a presentation by Parent's management to Parent's Board
of Directors in May 1998 regarding the Company. The presentation included a
return on investment analysis assuming the Company achieved its own forecasts
and an analysis of Parent's after tax proceeds in the event that the Company
never achieved an acceptable return and Parent decided to dispose of its
investment in the Company. This analysis reflected the tax benefits of selling
assets of the Company rather than stock. The direct tax benefits to Parent of a
sale of assets totaled approximately $10 million.
 
     In July 1998, Parent's management made another presentation to Parent's
Board of Directors which was basically the same as the April 1998 presentation
except that the transaction costs of purchasing the remaining outstanding shares
of the Company were increased. Parent's Board of Directors discussed the
possibility of obtaining an option to purchase the shares of the Company's
second largest beneficial stockholder, Shapiro Capital, an investment management
firm that beneficially owns approximately 21% of the outstanding Shares on a
fully diluted basis.
 
     In August 1998, Samuel R. Shapiro, President of Shapiro Capital, advised
John R. Meyers, President of the Company, of his possible interest in disposing
of the Shares beneficially owned by Shapiro Capital. Mr. Meyers informed Robert
A. Young, President and CEO of Parent and Chairman of the Board of the Company
of such discussions with Mr. Shapiro.
 
     On September 11, 1998, Parent purchased a block of 177,500 shares for
$6.375 per Share in a private block transaction through Stephens. Parent used
working capital on hand to purchase such Shares. This purchase represents
Parent's sole acquisition of Shares since the Company's initial public offering.
Parent filed a Schedule 13D under the Exchange Act with the Commission
reflecting this purchase of Shares on September 18, 1998. As a result of this
purchase, Parent owned in the aggregate approximately 49% of the total
outstanding Shares.
 
     In November 1998, Morgan Stanley began assisting Parent in its analysis of
the Company. Representatives of Morgan Stanley made a presentation regarding the
Company to Parent's Board of Directors at its regular meeting on December 10,
1998. Morgan Stanley reviewed with the Board of Directors the Company's
financial results, status of the transition of the Company, liquidity of the
stock, research coverage, and possible strategic value.
 
     Morgan Stanley reviewed the following strategic alternatives with Parent's
Board of Directors (i) Parent continuing to hold its 49% interest in the
Company, (ii) sale of 100% of the Company or (iii) a Parent repurchase of the
remaining Company interest held by the public. Morgan Stanley was not requested
to, and
 
                                        3
<PAGE>   6
 
did not, render a financial opinion regarding the fairness of the consideration
in the Offer and the Merger. In addition, Morgan Stanley was not requested to,
and did not, solicit third party indications of interest with respect to
Parent's interest in the Company. See "THE TENDER OFFER -- Fees and Expenses"
for a description of Parent's fee arrangements with Morgan Stanley in connection
with the Offer and the Merger.
 
     Additionally, at this meeting, representatives of the Company made a
presentation regarding the Company's 1999 budget and its five-year business plan
(the "Management Projections"). This presentation had also been given to the
Board of Directors of the Company the previous day. See "Certain Projections."
 
     After discussion of the alternatives, Parent's Board of Directors concluded
that it would be appropriate for Mr. Young to meet with Mr. Shapiro to determine
if Shapiro Capital remained interested in selling its Shares.
 
     On December 18, 1998, the Company announced that it had entered into a
settlement of a dispute with Bandag, Incorporated and certain of Bandag's
current and former employees arising out of the two companies' former franchise
relationship. Under the settlement terms, the Company received a one-time cash
payment of approximately $9.995 million and reported additional after-tax income
of approximately $5.4 million, which represented $1.06 per Share on an after-tax
basis. The settlement payment was applied to reduce the Company's outstanding
borrowings under its revolving credit agreement.
 
     At the direction of Parent's Board of Directors, on January 6, 1999, Mr.
Young met with Mr. Shapiro at the principal offices of Shapiro Capital. At such
meeting, Mr. Young and Mr. Shapiro proposed various prices and after
negotiations, Messrs. Young and Shapiro tentatively agreed to a $9.00 per Share
price for the Shares beneficially owned by Shapiro Capital (the "Shapiro
Shares"). Subsequently, during the week of January 11, 1999, counsel for Parent
and Shapiro Capital exchanged drafts of an agreement for the purchase of the
Shapiro Shares. However, Parent and Shapiro Capital determined that in light of
the large number of investment management accounts holding the Shapiro Shares, a
direct purchase would be impractical.
 
     Immediately prior to the delivery of the Proposal by Parent to the Company
described below, Parent and Shapiro Capital did however enter into the Support
Agreement on January 22, 1999, pursuant to which, among other things, Shapiro
Capital granted the Shapiro Proxy to Parent to vote the Shapiro Shares
(1,132,775 shares (approximately 21% of the outstanding Shares on a fully
diluted basis)) for the approval of the Merger and against any corporate action
the consummation of which would violate, frustrate the purpose of, or prevent or
delay the Merger. The Shapiro Proxy will terminate upon the earlier of (i) July
31, 1999 or (ii) the consummation of the Merger. In addition, the Support
Agreement states that Shapiro Capital believes the $9.00 per share cash price is
fair, that Shapiro Capital will support the Transaction and that Shapiro Capital
reserves the right to tender any and all Shares beneficially owned by it
pursuant to the Offer. Parent filed an amendment to the Schedule 13D referred to
above reporting the Support Agreement on January 26, 1999 (as amended, the
"Schedule 13D"). The Schedule 13D and the Support Agreement, which is attached
as an exhibit to the Schedule 13D, are available for inspection and copies are
obtainable in the manner set forth in "THE TENDER OFFER -- Available
Information."
 
     On January 22, 1999, Parent delivered to the Board the Proposal, in which
Parent offered to enter into a merger agreement with the Company pursuant to
which all of the issued and outstanding Shares not owned by Parent would be
acquired for cash in an amount equal to $9.00 per Share. The Proposal is
attached as an exhibit to the Schedule 13D and is available for inspection and
copies are obtainable in the manner set forth in "THE TENDER OFFER -- Available
Information."
 
     Representatives of Parent advised the Company's independent directors that
a special committee should be formed to evaluate the Proposal and that such
committee would need independent advisors. On January 25, 1999, the independent
directors of the Board interviewed representatives of Stephens, an independent
investment banking firm located in Little Rock, Arkansas and recommended by
representatives of Parent as knowledgeable about the Company. On January 26,
1999, the Board met and formally appointed Robert B. Gilbert and Nicholas M.
Georgitsis as the members of the Special Committee to, among other things,
consider how the Company should respond to the Proposal. On January 28, 1999,
the Special Committee retained Kutak Rock as independent legal advisor to the
Special Committee, and on January 29, 1999, the
 
                                        4
<PAGE>   7
 
Special Committee retained Stephens as independent financial advisor to the
Special Committee. Since analysts for Stephens had written research reports
about the Company in the past, and Stephens had previously been a market maker
for the Shares, the Special Committee chose not to interview any other
investment bankers. During the first two weeks of February 1999, Stephens and
Kutak Rock conducted due diligence regarding the proposed transaction at the
offices of the Company.
 
     On February 2, 1999, counsel for Parent sent Kutak Rock a draft Merger
Agreement which provided for a self-tender by the Company to purchase for cash
the Shares not owned by Parent. On February 10, 1999, the Special Committee met
in person with its financial and legal advisors to consider the Proposal and the
terms and conditions of the draft of the Merger Agreement. At this meeting the
Special Committee and its financial and legal advisors discussed their comments
regarding the proposed structure, particularly the Company tender offer, the
results of due diligence and the appropriateness of the Offer Price. On February
12, 1999, representatives of Parent, including its financial and legal advisors,
met by telephone conference with the Special Committee's financial and legal
advisors. During such meeting the parties discussed the structure of the
Transaction and the Offer Price. Specifically, the advisors of the Special
Committee requested that the Transaction be structured as a tender offer by
Parent or a one-step merger transaction instead of a tender offer by the
Company, which utilized the credit facility and working capital of the Company
to finance the Offer and asked if Parent had offered its best price for the
Shares. Parent agreed to consider the Special Committee's concerns regarding the
requirements that the Company initiate a tender offer for the Shares but advised
the Special Committee that the $9.00 Offer Price was its best and highest price.
Parent, however, agreed to review with Stephens certain information on which its
analysis would be based.
 
     On February 16, 1999, the Special Committee met telephonically with its
legal and financial advisors. The advisors reported to the Special Committee the
results of the February 12, 1999 conference call with the Parent and its
advisors. Stephens advised the Special Committee of the results of its initial
analyses of the fairness of the Offer Price. Such initial analyses indicated
that, while the Offer Price may be fair, a better Offer Price might be
obtainable if Stephens specifically requested Parent to consider a $10.00 Offer
Price and offer its analyses and other justification in support thereof. The
Special Committee instructed Stephens to suggest to Parent an offer price of
$10.00 and to provide Parent with analyses supportive of this price. It also
instructed Kutak Rock to reiterate its concerns regarding the Merger Agreement,
including terms requiring the Company to initiate a self-tender and those
specifying certain conditions under which Parent would be entitled to a break-up
fee.
 
     On February 18, 1999, representatives of Parent, including its financial
and legal advisors, met by telephone conference with the Special Committee's
financial and legal advisors. During such meeting the parties again discussed
the structure of the Transaction and the Offer Price. Specifically, Stephens
outlined its due diligence and preliminary valuation methodology to date. After
various discussions among the parties, Stephens again suggested that Parent
raise the Offer Price, and suggested an Offer Price of $10.00 would be more
appropriate in light of its analysis. In response, David E. Loeffler, Vice
President and CFO of Parent, indicated that Parent was not willing to raise the
Offer Price. Mr. Loeffler did agree to review Stephens' preliminary analysis and
certain information on which its analysis was based. Legal counsel for the
Special Committee then reiterated the Special Committee's concerns over the
structure of the Transaction as a self-tender and requested that Parent be the
bidder in any tender offer for the Shares. Such counsel also expressed concern
over a proposed $1 million break-up fee payable to Parent by the Company under
certain conditions.
 
     On February 22, 1999, Stephens sent Parent a letter which set forth summary
financial information derived from the Management Projections, summary financial
information derived from financial projections for the Company prepared by
Stephens with input from the Company's management which assumed a lower revenue
growth rate and a lower operating margin (the "Revised Projections") than the
Management Projections and various valuation methodologies utilizing the Revised
Projections. In such letter, Stephens again asked Parent to consider raising the
Offer Price and suggested that $10.00 per Share would be more appropriate. Such
letter did not indicate, however, that an Offer Price of less than $10.00 per
Share would not be fair.
 
                                        5
<PAGE>   8
 
     On February 25, 1999, representatives of Parent met by telephone conference
with Stephens to discuss the Stephens letter of February 22, 1999. Mr. Loeffler
indicated that Parent believed that the $9.00 per Share Offer Price was fair and
that Parent was not willing to raise its offer. Mr. Loeffler also noted his
belief that the Management Projections were too aggressive for a fairness
analysis in light of the Company's past failures to meet its budget and
operating income for the first part of 1999 being substantially behind budget.
Mr. Loeffler then informed Stephens that Parent was willing to make some changes
to the structure of the Transaction in response to the concerns over the
structure of the Transaction.
 
     On February 26, 1999, representatives of Parent, including its legal
advisors, met by telephone conference with the Special Committee's financial and
legal advisors. During such meeting legal counsel for the Special Committee
advised Parent that, among other things, the Special Committee wanted Parent to
conduct the tender offer, the elimination or substantial reduction in the
triggers and amount of the break-up fee and certain other protections to insure
that the Offer and the Merger would close. The Special Committee also requested
that Parent modify the Merger Agreement to provide a sale premium recapture
("Recapture") such that if, within one year after the Merger is consummated,
Parent sells the Company, then it would pay pro ratably to all stockholders of
the Company as of the date of the Merger Agreement, any premium Parent would
otherwise receive in such sale. Premium in this instance would have been the
amount of any excess received by Parent over the value of the Company assuming
such value to be equivalent of a $9.00 price per Share for all outstanding
Shares. Representatives of Parent indicated their willingness to make certain of
the requested changes and reiterated that they believed the $9.00 Offer Price to
be fair and that Parent would not agree to the Recapture. Later that day,
counsel for Parent distributed a revised draft of the Merger Agreement to the
parties that provided, among other things, for Parent making the tender offer,
the use of funds solely from Parent to consummate the Offer and the Merger and
the reduction of the break-up fee from $1 million plus expenses of Parent to
$675,000 inclusive of expenses of Parent.
 
     On March 2, 1999, counsel to Parent met by telephone conference with
Stephens and Kutak Rock to discuss the revised draft of the Merger Agreement,
and on March 3, 1999, counsel for Parent distributed a revised draft of the
Merger Agreement reflecting certain changes discussed the prior day, including,
among other things, further limiting the type of events that would trigger the
break-up fee.
 
     On March 5, 1999 the Special Committee met telephonically with its
financial and legal advisors. Stephens advised the Special Committee that Parent
once again had declined to increase the Offer Price and had declined to include
the Recapture in the Merger Agreement. Stephens indicated that it would likely
be prepared to render an opinion on the fairness of a $9.00 offer price from a
financial point of view provided that it and the Special Committee receive
certain assurances from Parent that to its knowledge that there is no fact,
circumstance, occurrence or event not disclosed to Stephens in their preparation
of the Revised Projections that Parent believed would significantly impact the
Company's operating results for fiscal 1999. The Special Committee instructed
Stephens and Kutak Rock to request such assurances of Parent. The Special
Committee also instructed Kutak Rock to request that Parent in the Merger
Agreement represent that it knows of no current discussions or negotiations
involving the sale of the Company to a third party.
 
     On March 5, 1999, counsel to Parent met by telephone conference with
Stephens and Kutak Rock to discuss the revised draft of the Merger Agreement.
Counsel for the Special Committee indicated that the latest changes were
acceptable to the Special Committee and that the Special Committee was ready to
proceed with the Transaction as provided in the latest draft of the Merger
Agreement subject to certain changes to the Merger Agreement including the
foregoing representations of Parent regarding a lack of a third party proposal,
the Special Committee receiving an opinion from Stephens that the $9.00 Offer
Price was fair to the Disinterested Stockholders and that Stephens receive
certain information from Parent regarding the Management Projections and the
Revised Projections. Later that day, counsel for Parent distributed a draft of a
side letter containing certain assurances of Parent with respect to the
Management Projections and, as discussed above, the Revised Projections, which
was subsequently executed and delivered to Stephens by Parent on March 15, 1999.
 
     On March 9, 1999, the Special Committee and its legal and financial
advisors met telephonically. At this meeting, Stephens advised that the
assurances regarding the Revised Projections by Parent were acceptable,
 
                                        6
<PAGE>   9
 
and Kutak Rock advised that the Special Committee's final comments to the Merger
Agreement had been appropriately resolved.
 
     On March 15, 1999, the Special Committee unanimously determined to
recommend the proposed transaction to the Board of Directors of the Company
after Stephens expressed the opinion (subsequently confirmed in its written
opinion) that, on the basis of, and subject to the matters stated in its
opinion, the consideration to be received by the Disinterested Stockholders
pursuant to the Offer and the Merger is fair to the Disinterested Stockholders
from a financial point of view. Later that day, the Board, with all directors
participating by conference telephone, met to consider the Offer and the Merger.
The Special Committee, with representatives of Stephens and Kutak Rock
participating, reported to the Board on its review of the Offer, the Merger and
the Merger Agreement and its recommendation of the proposed transaction as fair
to the holders of Shares (other than Parent) (the "Public Stockholders"). After
receiving the recommendation of the Special Committee, asking questions of the
Special Committee as well as its financial and legal advisors and receiving a
further explanation of the provisions of the Offer and Merger Agreement from
representatives of Parent and its legal advisors, the Board unanimously approved
the Offer, the Merger and the Merger Agreement.
 
     Subsequently that day, the Board of Directors of Parent, at a special
meeting held by conference telephone to consider the matter, unanimously
approved the Offer, the Merger and the Merger Agreement. Representatives of
Parent and the Company completed execution of the Merger Agreement, and the
proposed Offer and the Merger were announced the next day.
 
RECOMMENDATION OF THE SPECIAL COMMITTEE AND THE BOARD OF DIRECTORS; FAIRNESS OF
THE OFFER AND THE MERGER
 
     The Special Committee has unanimously (a) determined that the Offer and the
Merger, taken together, are fair to the Public Stockholders, (b) recommended
that the Board approve the Offer and adopt the Merger Agreement and the
transactions contemplated thereby in accordance with the Delaware Corporation
Law, (c) resolved to recommend that Public Stockholders accept the Offer and
approve the Merger Agreement, and (d) recommended that the Board take action to
render the Rights inapplicable to the Offer and the Merger.
 
     In recommending approval of the Merger Agreement and the transactions
contemplated thereby, and recommending that the Public Stockholders tender their
Shares pursuant to the Offer, the Special Committee considered a number of
factors, including:
 
     (i) The results of operations, financial condition, assets, liabilities,
business strategy and prospects of the Company and the nature of the industry in
which the Company competes. The members of the Special Committee were generally
familiar with the Company's business, results of operations and prospects and
further reviewed the Company's business, conditions and prospects in the course
of various meetings referred to above.
 
     In evaluating the Company's prospects, the Special Committee with the
assistance of its financial advisor considered the substantial risks inherent in
the tire retreading and new tire businesses, including the increasingly
competitive environment in which the Company operates, and consolidations in the
industry leading to economies of scale. The Special Committee determined that
these factors indicated an industry trend favoring larger companies with
sustainable economies of scale. The Special Committee determined that these
economies were not available to the Company and, without significant additional
investment over time, these would not be available to the Company in the future.
The Special Committee also considered the recent losses of certain key marketing
and sales personnel, which losses were represented by management of the Company
to further undermine the Company's short-term competitive abilities.
 
     The Special Committee also considered certain projected financial data in
considering the Company's prospects. See "Certain Projections."
 
     (ii) The opinion of Stephens to the effect that, as of the date of such
opinion and based upon and subject to certain factors and assumptions stated
therein, the $9.00 per Share cash consideration to be received by the
Disinterested Stockholders pursuant to the Offer and the Merger is fair from a
financial point of view to such
 
                                        7
<PAGE>   10
 
stockholders. THE FULL TEXT OF STEPHENS' OPINION IS ATTACHED AS ANNEX A HERETO
AND IS INCORPORATED HEREIN BY REFERENCE. STOCKHOLDERS ARE URGED TO READ SUCH
OPINION IN ITS ENTIRETY.
 
     (iii) The historical trading prices of the Shares, the historical trading
volume and liquidity in the trading market for the Shares, and the relationship
of the $9.00 per Share Offer Price to the historical market prices for the
Common Stock, including the fact that the Offer Price represents a 33.3% premium
over the $6.75 per share closing price of the Company's Common Stock on December
23, 1998, the trading day thirty days prior to the public announcement of the
Proposal.
 
     (iv) The fact that Parent has advised the Company that it is not aware of
any current offer or indication of interest from any person regarding the sale
of the Company and that, since January 22, 1999, the date of the announcement of
Parent's Proposal, no person or entity has publicly communicated such an offer
or indication of interest in acquiring the Company, or a significant position in
the Shares.
 
     (v) The view of the Special Committee, after consultation with its
financial and legal advisors, that the terms of the Merger Agreement, including
the amounts payable to Parent in the event of termination, which amounts are
believed by the Special Committee to approximate Parent's expenses incurred in
the Transaction, would not materially deter bona fide acquisition proposals by
third parties.
 
     (vi) The fact that the Merger Agreement includes an obligation for Parent
to make a first-step cash tender offer thereby enabling the Public Stockholders
who tender their shares to receive cash consideration without waiting for the
Merger to be consummated. Also considered favorable was the fact that Public
Stockholders who do not tender their Shares pursuant to the Offer would receive
in the Merger the same cash price per share paid by Parent in the Offer (unless
they elect to exercise their statutory dissenters' rights).
 
     (vii) The availability of judicial appraisal rights under Section 262 of
the Delaware General Corporation Law ("DGCL") to stockholders of the Company who
dissent from the Merger.
 
     (viii) The fact that Shapiro Capital had indicated to Parent its
willingness to accept $9.00 for its Shares, and its granting to Parent of the
Shapiro Proxy to vote in favor of the Merger on its behalf.
 
     (ix) The fact that due to Parent's ownership position in the Company's
Common Stock, coupled with the proxy from Shapiro Capital, Parent possesses
sufficient votes to effect the Merger and to prevent any effort by a third party
to acquire control of the Company except with the consent of Parent.
 
     In light of the Company's return on equity over recent periods, the Special
Committee did not consider net book values or liquidation value to be
appropriate indicators of the value of the consideration to be received by the
Public Stockholders.
 
     In addition to the factors listed above, the Board and the Special
Committee had each considered the fact that consummation of the Offer and the
Merger would eliminate the opportunity of the Public Stockholders to participate
in any potential future growth in the value of the Company, but determined that
this loss of opportunity was reflected (i) in part by the price of $9.00 per
Share to be paid in the Offer and the Merger and (ii) was considered in the
premium and other analyses performed by Stephens.
 
     In reaching its decision to approve the Merger Agreement and recommending
acceptance of the Offer, the Special Committee relied on the factors identified
above. Because of the appointment of the Special Committee and its engagement of
Stephens and Kutak Rock, neither the Special Committee nor the Board considered
it necessary to retain additional representatives to act solely on behalf of the
Public Stockholders for purpose of negotiating the terms of the Transaction.
 
     The foregoing discussion of the information and factors considered by the
Special Committee is not meant to be exhaustive but includes the material
factors considered by the Special Committee in reaching its conclusions and
recommendations. In view of the variety of factors considered in its reaching a
determination, the Special Committee did not find it practicable to, and did
not, quantify or otherwise assign relative weights to the specific factors
considered in reaching its conclusions and recommendations. In addition,
individual members of the Special Committee may have given different weights to
different factors.
 
                                        8
<PAGE>   11
 
     The Board, by a unanimous vote of all directors, based in part on the
recommendation and approval of the Special Committee, approved the Merger
Agreement and the transactions contemplated thereby and determined that each of
the Offer and the Merger is fair to the Public Stockholders. The Board, by a
unanimous vote of all directors, has recommended that all holders of Shares
(other than Parent and certain affiliates) accept the Offer and tender their
Shares pursuant to the Offer.
 
     In reaching its determinations referred to above, the Board considered the
recommendation of the Special Committee and the factors set forth immediately
above, each of which, in view of the Board, supported such determinations.
 
     The Board, including the Special Committee, believes that the Offer and the
Merger are procedurally fair because, among other things:
 
     (i) the Special Committee consisted of independent directors appointed to
represent the interests of the Public Stockholders.
 
     (ii) the Special Committee retained Stephens as its independent financial
advisor to assist them in evaluating the Offer and the Merger.
 
     (iii) the Special Committee retained and was advised by independent legal
counsel.
 
     (iv) the deliberations pursuant to which the Special Committee evaluated
the Offer and the Merger and alternatives thereto.
 
     (v) the fact that Shapiro Capital had indicated to Parent its willingness
to accept $9.00 per Share through the execution of the Support Agreement, and
the fact that the terms and conditions of the Merger Agreement, including the
$9.00 per Share price, were actively negotiated between the Special Committee,
on the one hand, and Parent, on the other hand.
 
     The Board and the Special Committee recognized that the Merger is not
structured to require the approval of a majority of the stockholders of the
Company other than Parent, and that Parent through its Share ownership and the
Shapiro Proxy has sufficient voting power to approve the Merger without the
affirmative vote of any other stockholder of the Company. The Board and the
Special Committee recognized that Parent is required pursuant to the Merger
Agreement to vote its Shares in favor of the Merger.
 
     Parent advised the Special Committee and the Board that it has not
received, and the Company, the Board and Special Committee did not receive any
indications of interest or proposals regarding the acquisition of the Company
after the public announcement of the Proposal.
 
OPINION OF FINANCIAL ADVISOR
 
     Stephens was retained by the Special Committee to assist it in evaluating
the fairness, to the Disinterested Stockholders, from a financial point of view,
of the Offer Price and the Merger Consideration. At the meeting of the Company's
Board of Directors held on March 15, 1999, Stephens delivered to the Special
Committee a written opinion stating that each of the Offer Price and the Merger
Consideration is fair to the Disinterested Stockholders from a financial point
of view. In arriving at its written opinion, Stephens (i) reviewed certain
publicly available business and financial information relating to the Company;
(ii) reviewed certain information including internal financial statements,
financial projections (Management Projections and Revised Projections), and
other financial and operating data concerning the Company furnished to Stephens
by the Company and Parent; (iii) held discussions with certain senior officers,
directors and other representatives or advisors of the Company and Parent
concerning the business, operations and prospects of and potential strategic
alternatives available to the Company; (iv) reviewed the reported price and
trading activity for the Company's common stock; (v) analyzed certain financial
and stock market information for the Company as compared with similar
information for other publicly traded companies; (vi) reviewed the financial
terms, to the extent publicly available, of certain comparable business
combinations; (vii) reviewed the Merger Agreement, the exhibits thereto, and
other related documents; and (viii) performed certain discounted cash flow
analyses and other studies and analyses as it considered
 
                                        9
<PAGE>   12
 
appropriate. In addition, Stephens considered for the purposes of its opinion,
recent trends in the new tire and retreaded tire industry and the competitive
position of the Company.
 
     In arriving at its opinion, Stephens performed a variety of financial
analyses, the material portions of which are summarized below. This summary does
not purport to be a complete description of the analyses performed by Stephens.
In addition, Stephens believes that its analyses must be considered as a whole
and that selecting portions of its analysis or the factors considered by it,
without considering all such factors and analyses, could create a misleading
view of the process underlying its analyses. Stephens did not draw any specific
conclusions from or with regard to any one method of analysis in isolation from
others. Arriving at a fairness opinion is a complex process not necessarily
susceptible to partial or summary description. The matters considered by
Stephens in arriving at its opinion are based on numerous macroeconomic,
operating and financial assumptions with respect to industry performance,
general business and economic conditions and other matters, many of which are
beyond Parent's and the Company's control. The analyses performed by Stephens
are not necessarily indicative of actual values, which may be significantly more
or less favorable than suggested by such analyses. Additionally, analyses
relating to the values of businesses do not purport to be appraisals or to
reflect the prices at which such business actually may be sold. Because such
analyses are inherently subject to uncertainty, none of the Company, Parent or
Stephens or any other person assumes responsibility if future events do not
conform to the judgments reflected in the opinion of Stephens.
 
     In rendering its opinion, Stephens assumed and relied, without independent
verification, upon the accuracy and completeness of all financial and other
information publicly available or furnished to or otherwise reviewed by or
discussed with Stephens. With respect to financial forecasts and other
information provided to or otherwise reviewed by or discussed with Stephens, the
management of the Company advised Stephens that such forecasts and other
information were reasonably prepared on bases reflecting the best currently
available estimates and judgments of the management of the Company as to the
future financial performance of the Company. Stephens did not make or obtain an
independent evaluation or appraisal of the assets, liabilities (contingent or
otherwise and including the loss and loss adjustment expense reserves) or
reserves of the Company nor did Stephens make any physical inspection of the
properties or assets of the Company.
 
     The full text of the written opinion of Stephens dated March 15, 1999,
which sets forth the assumptions made, matters considered and limitations on the
review undertaken, is attached hereto as ANNEX A and is incorporated herein by
reference. Holders of Shares are urged to read the opinion carefully in its
entirety. Stephens' opinion is directed only to the fairness of the Offer Price
and the Merger Consideration to the Disinterested Stockholders from a financial
point of view. The summary of the opinion of Stephens set forth in this Offer to
Purchase is qualified in its entirety by reference to the full text of such
opinion.
 
     Overview. In its presentation to the Special Committee, Stephens presented
an overview of the Proposal, the Offer and the Merger and the negotiations
leading to the definitive Merger Agreement. Stephens reviewed the recent
historical performance of the Company as well as its future performance as
projected by the management of the Company.
 
     Stephens noted that at $9.00 per Share, the implied value of common equity,
including the value of stock options and performance award units plus the amount
of assumed debt less the amount of assumed cash and cash equivalents ("Implied
Total Transaction Value") of the entire Company was approximately $58.1 million.
This Implied Total Transaction Value represented approximately 0.3x the
Company's 1998 and estimated 1999 revenues included in the Revised Projections;
5.9x and 4.8x the Company's 1998 earnings, before interest, taxes, depreciation
and amortization ("EBITDA") (restated to exclude the effects of the Bandag
settlement and related litigation expenses) and estimated 1999 EBITDA included
in the Revised Projections, respectively; and 15.9x and 10.7x the Company's 1998
earnings, before interest, taxes and amortization ("EBITA") (restated to exclude
the effects of the Bandag settlement and related litigation expenses) and
estimated 1999 EBITA included in the Revised Projections, respectively. The
total implied value of common equity, including the value of stock options and
performance award units ("Implied Transaction Value") of the entire Company was
approximately $46.3 million. This Implied Transaction Value represented 47.3x
and 17.1x the Company's 1998 net income (restated to exclude the effects of the
Bandag
 
                                       10
<PAGE>   13
 
settlement and related litigation expenses) and estimated 1999 net income
included in the Revised Projections, respectively and approximately 0.7x the
Company's 1998 and estimated 1999 book value.
 
     Valuation Analysis. Stephens arrived at ranges of value for the Company's
Shares by utilizing four principal valuation methodologies: a comparable company
analysis; a comparable transaction analysis; a discounted cash flow analysis;
and an analysis of premiums paid in similar transactions. Stephens also analyzed
the historical trading (including price and volume) of the Company's Shares.
 
     Comparable Company Analysis. Stephens compared certain publicly available
financial information, operating data and projected financial performance
(research analyst estimates per I/B/E/S) of five companies that Stephens
believed to be appropriate for comparison, specifically, TBC Corporation
("TBC"); Bandag, Inc.; Standard Products Co.; Cooper Tire & Rubber Co.
("Cooper"); and Goodyear Tire & Rubber Co. ("Goodyear"), to corresponding
financial and operating data of the Company. Stephens derived ranges of implied
value for the Company's Shares by examining the comparable companies' trading
ratios of a) market value of common equity plus total debt less cash and cash
equivalents ("Total Market Capitalization") to 1998 EBITDA of 4.0x to 5.9x; b)
Total Market Capitalization to 1998 EBITA of 5.9x to 8.1x; c) market price of
common shares to reported 1998 earnings per share of 6.8x to 12.3x; and d) the
market price of common shares to estimated 1999 earnings per share (per research
analyst estimates from I/B/E/S) of 6.3x to 11.7x.
 
     Stephens derived a range of implied values for the Company's Shares of
$5.45 to $9.34 based on a ratio of Total Market Capitalization to 1998 EBITDA
(excluding the effects of the Bandag settlement and related litigation
expenses); a range of $2.02 to $4.19 based on a ratio of Total Market
Capitalization to 1998 EBITA (excluding the effects of the Bandag settlement and
related litigation expenses); a range of $1.93 to $3.08 based on a ratio of
market price of common shares to 1998 earnings per share (excluding the effects
of the Bandag settlement and related litigation expenses); and a range of $4.26
to $7.46 based on a ratio of market price of common shares to 1999 estimated
earnings per share included in the Revised Projections.
 
     Comparable Transaction Analysis. Stephens analyzed the financial terms, to
the extent publicly available, of three transactions involving businesses
comparable to that of the Company which were announced since May 5, 1996. The
selected transactions were Goodyear's acquisition of Brad Ragan, Inc.; Cooper's
acquisition of Avon Tyres PLC, and TBC's acquisition of Big O Tires. Stephens
derived ranges of implied value for the Company's shares by examining the
comparable transaction ratios of a) the price paid for the common equity plus
assumed debt less assumed cash ("Total Transaction Value") to latest twelve
month EBITDA which ranged from 6.2x to 14.1x; b) the Total Transaction Value to
latest twelve month EBITA which ranged from 9.2x to 20.1x; and c) the price paid
for the common equity ("Transaction Value") to latest twelve month net income
which ranged from 22.5x to 46.4x.
 
     Stephens derived a range of implied values for the Company's Shares of
$9.34 to $17.10 based on a ratio of Total Transaction Value to 1998 EBITDA
(excluding the effects of the Bandag settlement and related litigation
expenses); a range of $4.91 to $12.14 based on a ratio of Total Transaction
Value to 1998 EBITA (excluding the effects of the Bandag settlement and related
litigation expenses); and a range of $3.86 to $7.71 based on a ratio of
Transaction Value to 1998 net income (excluding the effects of the Bandag
settlement and related litigation expenses).
 
     Discounted Cash Flow Analysis. Stephens performed a discounted cash flow
analysis of the Company based upon the Revised Projections. Utilizing these
projections, Stephens calculated a range of implied value per share based upon
the discounted net present value of the sum of the projected stream of unlevered
free cash flows of the Company for the years ending December 31, 1999 through
2003 and a projected terminal value at 2003 less debt plus cash as of December
31, 1998 and divided by the number of the Company's fully diluted shares
outstanding. Stephens applied several discount rates (ranging from 11.0% to
13.0%) and multiples of EBITDA (ranging from 5.0x to 7.0x) to generate the
terminal value. Utilizing this methodology, the implied range of value per
Company Share was $7.39 to $12.28.
 
     Premiums Paid Analysis. Stephens compared the premiums over market prices
paid in 17 selected reported transactions from May 21, 1997 through December 17,
1998 in which a large or controlling stockholder bought out the remaining public
stockholders in a going private transaction. Stephens compared
 
                                       11
<PAGE>   14
 
the per share prices paid in such transactions with the closing price for the
target's stock thirty days and one day prior to announcement of the subject
transactions. The average premium paid in these transactions was 37.2% and 30.1%
over the subject target's closing per share price thirty days and one day prior
to announcement, respectively. This was compared to similarly calculated
premiums of 33.3% and 38.5% for the Shares thirty days and one day prior to the
January 22, 1999 announcement of the Proposal, respectively.
 
     Information Concerning Stephens. Stephens is a nationally recognized
investment banking firm and, as a customary part of its investment banking
activities, is regularly engaged in the valuation of businesses and their
securities in connection with mergers and acquisitions, negotiated
underwritings, private placements and for other purposes. The Special Committee
selected Stephens as a financial advisor because of its expertise, reputation
and familiarity with the Company. The Special Committee engaged Stephens to
render a fairness opinion in connection with the Transaction. The Company agreed
to pay Stephens a reasonable and customary fee upon the rendering of a fairness
opinion. The Company has agreed to reimburse Stephens for out-of-pocket expenses
(including fees and disbursements of their counsel) and to indemnify Stephens
and certain related persons against certain liabilities in connection with
rendering the fairness opinion and serving as the Special Committee's financial
advisor.
 
POSITION OF PARENT REGARDING FAIRNESS OF THE OFFER AND THE MERGER
 
     Parent believes that the consideration to be received by the Public
Stockholders pursuant to the Offer and the Merger is fair to the Public
Stockholders. Parent bases its belief on the following facts and conclusions:
 
     (i) the Company's Board and the Special Committee concluded that the Offer
and the Merger, taken together, are fair to and in the best interests of the
Public Stockholders;
 
     (ii) notwithstanding the fact that Stephens Opinion was addressed to the
Special Committee, and that Parent is not entitled to rely on such opinion, the
Special Committee received an opinion from Stephens that, as of the date of such
opinion and based on and subject to certain matters stated in such opinion, the
consideration to be received in the Offer and the Merger is fair to the
Disinterested Stockholders from a financial point of view;
 
     (iii) the support of the Transaction by Shapiro Capital, the largest
independent stockholder of the Company, which was the product of arms-length
negotiations;
 
     (iv) neither the Company nor Parent have received any indications of
interest from third parties regarding the acquisition of the Company since the
announcement of the Proposal;
 
     (v) the consideration stated in the Offer and the Merger for purchase of
the Shares not already owned by Parent represents a premium of 38.5% over the
closing price of the Shares on January 21, 1999, the day prior to announcement
of the Proposal, and a premium of approximately 33.3% over the closing price
thirty days prior to the announcement of the Proposal;
 
     (vi) although the current prices for the Shares reflect a decline in value
of the Company over historical market prices, such decline is attributable to
the deterioration in the Company's financial results and business prospects in
recent years as well as concerns about the Company's position within the truck
tire industry in general;
 
     (vii) the Shares provide only limited liquidity for the Company's
stockholders and that condition is not likely to change in light of the lack of
analyst coverage of the Company and limited trading volume of the Shares; and
 
     (viii) the other factors enumerated by the Special Committee as supporting
their recommendation of the Offer and the Merger.
 
     Parent found it not practicable to assign, and did not assign, relative
weights to the individual factors considered in reaching its conclusion as to
fairness. In light of the nature of the Company's business and the Transaction,
Parent did not consider net book value or liquidation value to be appropriate
indicators of the value of the consideration to be received by the Public
Stockholders.
 
                                       12
<PAGE>   15
 
CERTAIN PROJECTIONS
 
     In the course of the discussions between the parties, the Company provided
Parent and Stephens with the Management Projections and Stephens, with the input
of the management of the Company, prepared the Revised Projections as described
in "SPECIAL FACTORS -- Background of the Offer and the Merger" regarding the
Company. Stephens and the management of the Company discounted the Management
Projections since management of the Company and Stephens believed that they were
overly optimistic due to, among other things, increased competition within the
tire industry, the Company's actual performance during the past three years and
the first two months of 1999 and the Company's failure to meet its projections
in prior years. Accordingly, the Management Projections were not given
significant consideration by the Special Committee in reaching their conclusions
about the fairness of the Offer and the Merger to the Public Stockholders. In
addition, Stephens reviewed but did not rely on the Management Projections
except to provide an initial starting point for the formulation by Stephens with
input from the Company's management of the Revised Projections. However, the
Special Committee and Stephens did review and consider the Revised Projections
which are not publicly available and contain, among other things, the summary
financial information set forth below.
 
<TABLE>
<CAPTION>
                                                             YEAR ENDING DECEMBER 31,
                                                    ------------------------------------------
                                                     1999     2000     2001     2002     2003
                                                    ------   ------   ------   ------   ------
                                                       (IN MILLIONS EXCEPT PER SHARE DATA)
<S>                                                 <C>      <C>      <C>      <C>      <C>
Revenue...........................................  $191.9   $203.0   $214.7   $227.2   $240.4
Operating Income..................................     5.4      7.1      8.4     10.1     11.5
Net Income........................................     2.7      3.7      4.5      5.6      6.5
Earnings Per Share................................  $ 0.53   $ 0.73   $ 0.89   $ 1.10   $ 1.28
</TABLE>
 
     THE COMPANY (I) DOES NOT, AS A MATTER OF COURSE, MAKE PUBLIC FORECASTS AS
TO FUTURE REVENUES OR PROFITS AND (II) THE FOREGOING PROJECTIONS WERE BASED ON
ESTIMATES AND ASSUMPTIONS THAT ARE INHERENTLY SUBJECT TO SIGNIFICANT ECONOMIC
AND COMPETITIVE UNCERTAINTIES, ALL OF WHICH ARE DIFFICULT TO PREDICT AND MANY OF
WHICH ARE BEYOND THE COMPANY'S CONTROL. ACCORDINGLY, THERE CAN BE NO ASSURANCE
THAT THE PROJECTED RESULTS CAN BE REALIZED OR THAT ACTUAL RESULTS WILL NOT BE
MATERIALLY HIGHER OR LOWER THAN THOSE PROJECTED. THE PROJECTIONS WERE NOT
PREPARED WITH A VIEW TO PUBLIC DISCLOSURE OR COMPLIANCE WITH THE PUBLISHED
GUIDELINES OF THE COMMISSION OR THE GUIDELINES ESTABLISHED BY THE AMERICAN
INSTITUTE OF CERTIFIED PUBLIC ACCOUNTANTS REGARDING PROJECTIONS OR FORECASTS.
NONE OF THE COMPANY OR PARENT OR THEIR RESPECTIVE ADVISORS ASSUMES ANY
RESPONSIBILITY FOR THE ACCURACY OF THE PROJECTIONS. THE INCLUSION OF THE
FOREGOING PROJECTIONS SHOULD NOT BE REGARDED AS AN INDICATION THAT THE COMPANY
OR PARENT OR ANY OTHER PERSON WHO RECEIVED SUCH INFORMATION CONSIDERS IT AN
ACCURATE PREDICTION OF FUTURE EVENTS. NEITHER THE COMPANY NOR PARENT INTENDS TO
UPDATE, REVISE OR CORRECT SUCH PROJECTIONS IF THEY BECOME INACCURATE (EVEN IN
THE SHORT TERM). A NUMBER OF FACTORS COULD CAUSE ACTUAL RESULTS TO DIFFER
MATERIALLY FROM THE FOREGOING PROJECTIONS, INCLUDING GENERAL ECONOMIC
CONDITIONS; COMPETITIVE INITIATIVES AND PRICING PRESSURES; AVAILABILITY AND COST
OF CAPITAL; SHIFTS IN MARKET DEMAND; WEATHER CONDITIONS; GOVERNMENT REGULATIONS;
THE PERFORMANCE AND NEEDS OF INDUSTRIES SERVED BY THE COMPANY; ACTUAL FUTURE
COSTS OF OPERATING EXPENSES SUCH AS THE PRICE OF OIL; SELF-INSURANCE CLAIMS AND
EMPLOYEE WAGES AND BENEFITS; AND THE TIMING AND AMOUNT OF CAPITAL EXPENDITURES.
 
                                       13
<PAGE>   16
 
PURPOSE AND STRUCTURE OF THE TRANSACTION
 
     The purpose of the Offer is for Parent to acquire the entire equity
interest in the Company. Following the Offer, Parent intends to acquire any
remaining equity interest in the Company through the consummation of the Merger.
 
     In order to provide a prompt and orderly transfer of sole ownership of the
Company to Parent and to expedite the time during which stockholders may receive
cash for their Shares, the Transaction has been structured as a cash tender
offer by Parent followed by a merger of Newco with and into the Company in
which, subject to the terms and conditions of the Merger Agreement, the
remaining equity interest in the Company (other than the Parent Shares) not
acquired pursuant to the Offer will be exchanged for the Merger Consideration.
See "Background of the Offer and the Merger" for a description of the
negotiations among the parties regarding the structure of the Transaction.
 
     The present requirement to maintain the listing of the Shares on the Nasdaq
National Market and registration of the Shares under the Exchange Act imposes on
the Company direct and indirect compliance costs that would be eliminated after
consummation of the Transaction. In addition, compliance with such ongoing
requirements impose an administrative burden on the Company, resulting in the
diversion of management time and resources.
 
     In addition, boards of directors of publicly-traded companies often have to
address conflicts of interest that inevitably arise as a result of the differing
interests and goals of majority and minority stockholders. Parent believes that
eliminating the potential for any conflict between the interests of Parent and
the other stockholders of the Company is a substantial benefit of the
Transaction.
 
PLANS FOR THE COMPANY AFTER THE OFFER AND THE MERGER
 
     It is expected that, immediately following the Merger, Parent will continue
its review of the Company and its assets, corporate structure, dividend policy,
capitalization, operations, properties, policies, management and personnel and
to consider, what, if any, changes would be desirable in light of the
circumstances then existing, and reserves the right to take such actions or
effect such changes as it deems desirable. Parent may retain advisors or
consultants to assist in such review. Any such changes could include changes in
the Company's business, corporate structure, capitalization, management or
dividend policy or a sale or recapitalization of the Company. See "Certain
Effects of the Offer and the Merger."
 
     Pursuant to the Merger Agreement, the directors of Newco along with John R.
Meyers, a current director and the President and Chief Executive Officer of the
Company, will be the directors of the Company upon consummation of the Merger,
and the officers of the Company will remain the officers of the Company, after
the Merger.
 
     Except as described herein, Parent has no current plans or proposals, and
since the Proposal has not engaged in any discussions with any third parties,
that would relate to, or result in, any extraordinary corporate transaction
involving the Company, such as a merger, reorganization or liquidation involving
the Company, a sale or transfer of a material amount of assets of the Company,
any change in the Company's capitalization or dividend policy or any other
material change in the Company's business, corporate structure or personnel.
However, Parent reserves the right to effect such actions or effect such changes
as its deems desirable.
 
CERTAIN EFFECTS OF THE OFFER AND THE MERGER
 
     If the Offer and the Merger are consummated, the Public Stockholders will
not have the opportunity to participate in the future earnings, profits, and
growth of the Company and will not have a right to vote on corporate matters.
Parent, as the parent company of the Company, will own a 100% interest in the
net book value and net earnings of the Company and will benefit from any
increase in the value of the Company following the Offer and the Merger. Any
such increase could be realized by Parent through a sale or recapitalization of
the Company. Similarly, Parent will bear the risk of any decrease in the value
of the Company after the Merger and the Public Stockholders will not face the
risk of a decline in the value of the Company after the Merger.
                                       14
<PAGE>   17
 
     The purchase of Shares pursuant to the Offer will reduce the number of
Shares that might otherwise trade publicly and will reduce the number of holders
of Shares, which could adversely affect the liquidity and market value of the
remaining Shares held by the stockholders of the Company other than Parent.
Parent cannot predict whether the reduction in the number of Shares that might
otherwise trade publicly would have an adverse or beneficial effect on the
market price for or marketability of the Shares or whether it would cause future
market prices to be greater or less than the Offer price.
 
     It is possible that the Offer could be consummated but the Merger fails to
occur if certain conditions to the Merger are not satisfied and not waived by
Parent. See "Merger Agreement -- Conditions to Merger." This outcome could have
certain adverse effects on any holders of Shares who do not tender their Shares
in the Offer, including adverse effects on the value, liquidity or trading
market of the Shares. These and certain other adverse effects are described more
fully in the remainder of this section.
 
     If the Offer closes but the Merger fails to occur, Parent could own a
number of Shares sufficient to give it voting control of the Company and enable
it to approve a merger, recapitalization, asset sale or other extraordinary
transaction involving the Company without the necessity of obtaining the
affirmative vote or approval of any other stockholders. The Merger Agreement
does not prohibit Parent or any third party from offering consideration of less
than $9.00 per share to the remaining holders of the Shares in any such
transaction. Parent, however, does not have any intention to consummate the
Offer without also subsequently consummating the Merger pursuant to the terms of
the Merger Agreement.
 
     Depending upon the number of Shares purchased pursuant to the Offer, the
Shares may no longer meet the requirements of the Nasdaq National Market for
continued listing and may, therefore, be delisted from such exchange. According
to the Nasdaq National Market's published guidelines, the Shares might no longer
be eligible for quotation on the Nasdaq National Market if, among other things,
either (i) the number of publicly-held Shares is less than 750,000, there are
fewer than 400 holders of at least 100 shares, the aggregate market value of the
publicly-held Shares is less than $5 million, net tangible assets are less than
$4 million and there are fewer than two registered and active market makers for
the Shares, or (ii) the number of publicly-held Shares is less than 1,100,000,
there are fewer than 400 holders of at least 100 shares, the aggregate market
value of publicly held Shares is less than $15 million, and either (x) the
Company's market capitalization is less than $50 million or (y) the total assets
and total revenue of the Company for the most recently completed fiscal year or
two of the last three most recently completed fiscal years does not exceed $50
million and there are fewer than four registered and active market makers. As of
March 10, 1999, there were 5,072,255 shares outstanding held of record by 171
holders (not including beneficial holders of Shares in street name).
 
     If the Shares were to cease to be quoted on the Nasdaq National Market, the
market for the Shares could be adversely affected. It is possible that the
Shares would be traded or quoted on other securities exchanges or in the
over-the-counter market, and that price quotations would be reported by such
exchanges or through the National Association of Securities Dealers Automated
Quotation System, Inc. ("Nasdaq").
 
     The extent of the public market for the Shares and availability of such
quotations would, however, depend upon such factors as the number of holders
and/or the aggregate market value of the publicly-held Shares at such time, the
interest in maintaining a market in the Shares on the part of securities firms,
the possible termination of registration of the Shares under the Exchange Act
and other factors.
 
     The Shares are currently "margin securities" under the regulations of the
Board of Governors of the Federal Reserve System (the "Federal Reserve Board"),
which has the effect, among other things, of allowing brokers to extend credit
on the collateral of such Shares. Depending upon factors similar to those
described above regarding listing and market quotations, the Shares might no
longer constitute "margin securities" for the purposes of the Federal Reserve
Board's margin regulations and, therefore, could no longer be used as collateral
for loans made by brokers.
 
     The Shares are currently registered under the Exchange Act. Such
registration may be terminated if the Shares are not listed on a national
securities exchange and there are less than 300 holders of record. Termination
of the registration of the Shares under the Exchange Act would substantially
reduce the
 
                                       15
<PAGE>   18
 
information required to be furnished by the Company to holders of Shares and to
the Commission and would make certain of the provisions of the Exchange Act,
such as the short-swing profit recovery provisions of Section 16(b), the
requirement of furnishing a proxy or information statement in connection with
stockholder action and the related requirement of an annual report to
stockholders and the requirements of Rule 13e-3 under the Exchange Act with
respect to "going private" transactions, no longer applicable to the Shares.
Furthermore, "affiliates" of the Company and persons holding "restricted
securities" of the Company may be deprived of the ability to dispose of such
securities pursuant to Rule 144 promulgated under the Securities Act of 1933, as
amended (the "Securities Act"). If registration of the Shares under the Exchange
Act were terminated, the Shares would no longer be "margin securities" or
eligible for listing on a securities exchange or Nasdaq reporting.
 
     Following consummation of the Merger, the Shares will be delisted from the
Nasdaq National Market, and the registration of the Shares under the Exchange
Act will be terminated. Accordingly, following the Merger, there will be no
publicly-traded securities of the Company outstanding, and the Company will no
longer be required to file reports with the Commission.
 
INTERESTS OF CERTAIN PERSONS IN THE OFFER AND THE MERGER
 
     In considering the recommendation of the Special Committee and the Board
with respect to the Offer and the Merger, stockholders should be aware that
certain members of the Company's management and the Board have certain interests
which are referred to below and which present them with actual or potential
conflicts of interest in connection with the Transaction.
 
     General. During the Company's previous three fiscal years, the Company has
engaged in certain transactions and entered into various agreements with Parent
and its subsidiaries, and Parent and its subsidiaries have had numerous contacts
with the Company. Certain employees working on behalf of the Company have
assisted Parent and Newco with respect to the Transaction. No employee working
on behalf of the Company has, or will, receive any additional or separate
compensation for such services.
 
     Service Fees and Other Related Party Transactions. The Company is a party
to a Transition Services Agreement with Parent whereby Parent provides services
in the areas of accounting, data processing, financial, legal, tax, cash
management, human resources, and risk management activities. The Transition
Services Agreement is effective indefinitely, unless terminated by either party
on 90 days' notice. The Agreement requires the Company to pay a service fee for
these services based on the value and cost of services provided. Certain other
expenses, primarily data processing and programming services, are charged to the
Company based on their actual cost to Parent. Total fees charged to the Company
under this agreement were as follows:
 
<TABLE>
<CAPTION>
                                                      1998         1997         1996
                                                   ----------   ----------   ----------
<S>                                                <C>          <C>          <C>
Service Fee......................................  $1,342,800   $1,400,021   $1,543,829
Data Processing Services.........................   1,361,646    1,225,298    1,018,213
                                                   ----------   ----------   ----------
          Total..................................  $2,704,446   $2,625,319   $2,562,042
                                                   ==========   ==========   ==========
</TABLE>
 
In November 1998, the Company purchased from Parent an office building for use
as the Company's headquarters. As consideration, the Company transferred its
present headquarters building to Parent along with a cash payment of $500,000.
In the opinion of management of the Company, the transaction values were fair to
the Company.
 
     Director and Officer Interlocks. Three of the six members of the Board are
currently members of the Parent's Board or are officers of Parent, and some of
the Company's executive officers are also officers of Parent. See ANNEXES C and
D for a listing of each of the directors and officers of Parent, Newco and the
Company. Pursuant to the Merger Agreement, the directors of Newco along with
John R. Meyers, a current director and the President and Chief Executive Officer
of the Company, will be the directors of the Company upon consummation of the
Merger, and the officers of the Company will remain the officers of the Company
after the Merger.
 
                                       16
<PAGE>   19
 
     Beneficial Ownership of Shares by Directors and Officers of Parent or
Newco. As of December 31, 1998, the following directors and executive officers
of Parent or Newco owned the following number of Shares and held stock options
to purchase Shares:
 
<TABLE>
<CAPTION>
                                                                                             TOTAL NUMBER
                                                                                           OF SHARES SUBJECT
                                                                           NUMBERS OF          TO STOCK
NAME                                                TITLE                SHARES OWNED(1)     OPTIONS HELD
- ----                                                -----                ---------------   -----------------
<S>                                    <C>                               <C>               <C>
Robert A. Young III..................  President, CEO & Director of
                                         Parent                              10,000             25,000
William A. Marquard..................  Chairman of Parent                    10,000             25,000
John H. Morris.......................  Director of Parent                        --             25,000
J. Lavon Morton......................  Vice President of Parent               1,000                 --
Jerry A. Yarbrough...................  Senior Vice President of Parent          800                 --
</TABLE>
 
- ---------------
 
(1) Exclusive of stock options to purchase Shares.
 
No other director or executive officer of Parent or Newco holds any Shares or
stock options to purchase Shares.
 
     Beneficial Ownership of Shares by Directors and Officers of the Company. In
addition to the foregoing information regarding Shares owned by directors and
officers of Parent or Newco (certain of whom are directors or officers of the
Company (see ANNEXES C and D)), as of December 31, 1998, the following directors
and officers of the Company owned the following number of Shares and held stock
options to purchase Shares:
 
<TABLE>
<CAPTION>
                                                                                             TOTAL NUMBER
                                                                                           OF SHARES SUBJECT
                                                                           NUMBERS OF          TO STOCK
NAME                                                TITLE                SHARES OWNED(1)     OPTIONS HELD
- ----                                                -----                ---------------   -----------------
<S>                                    <C>                               <C>               <C>
John R. Meyers.......................  President, CEO & Director              4,400             45,000
Nicolas M. Georgitsis(2).............  Director                               4,000             25,000
Robert B. Gilbert(2).................  Director                                  --             25,000
Daniel V. Evans......................  Executive Vice President & COO         2,279             40,000
</TABLE>
 
- ---------------
 
(1) Exclusive of stock options to purchase Shares.
 
(2) Member of the Special Committee.
 
The Company has been advised by the executive officers, directors and affiliates
of Parent and the Company (other than Parent) that such persons intend to tender
Shares owned by them pursuant to the Offer.
 
     Stock Options. With regard to the stock options to purchase Shares owned by
the directors and officers of the Company, Parent and Newco, all such stock
options as well as the rest of the outstanding stock options of the Company,
will immediately vest upon consummation of the Merger, and it is expected that
the optionees will receive a cash payment equal to the difference between the
$9.00 Offer Price and the exercise price for each stock option with respect to
each option that has an exercise price of less than $9.00 per Share. For each
stock option that has an exercise price of $9.00 per Share or more, the optionee
will receive a cash payment equal to $0.10 for each such stock option in return
for full release of claims under such options. The
 
                                       17
<PAGE>   20
 
directors and officers of Parent, Newco and the Company owning stock options are
expected to receive the following consideration in exchange for their stock
options:
 
<TABLE>
<CAPTION>
                                                                             TOTAL NUMBER
                                                                           OF SHARES SUBJECT
                                                                               TO STOCK          AGGREGATE
NAME                                                 TITLE                   OPTIONS HELD      CONSIDERATION
- ----                                                 -----                 -----------------   -------------
<S>                                    <C>                                 <C>                 <C>
Robert A. Young III..................  President, CEO & Director of
                                       Parent; Director of the Company          25,000            $11,375
William A. Marquard..................  Chairman of Parent; Director of
                                       the Company                              25,000            $13,250
John H. Morris.......................  Director of Parent; Director of
                                       the Company                              25,000            $13,250
John R. Meyers.......................  President, CEO & Director of the
                                         Company                                45,000            $82,500
Nicolas M. Georgitsis(1).............  Director of the Company                  25,000            $18,250
Robert B. Gilbert(1).................  Director of the Company                  25,000            $18,250
Daniel V. Evans......................  Executive Vice President & COO of
                                         the Company                            40,000            $51,500
</TABLE>
 
- ---------------
 
(1) Member of the Special Committee.
 
     Performance Unit Award Program. Pursuant to the Treadco, Inc. 1995
Performance Award Program (the "Performance Program"), certain employees of the
Company can be awarded Performance Award Units (the "Units") that have the
value, as of any given day, equal to the closing sale price of the Shares on the
most recent trading day. Only two employees of the Company hold Units, John R.
Meyers, President, CEO and Director of the Company and Daniel V. Evans,
Executive Vice President and COO of the Company. Pursuant to the terms of the
Performance Program all outstanding Units will vest upon consummation of the
Merger, and Messrs. Meyers and Evans will receive $9.00 in cash for each Unit
for aggregate consideration of $277,695 and $138,851, respectfully.
 
     Indemnification; Insurance. Pursuant to the Merger Agreement, Parent, Newco
and the Company have agreed to cooperate and use all reasonable efforts to
defend against and respond to any action, suit, proceeding, or investigation
relating to the Merger Agreement or to the transactions contemplated thereby
commenced by any third party. It is also agreed that all rights to
indemnification or exculpation now existing in favor of the directors, officers,
employees and agents of the Company as provided in the Company's certificate of
incorporation or bylaws shall, to the extent such rights are in accordance with
applicable law, survive the Merger and stay in effect in accordance with their
respective terms for a period of six years after the Effective Time.
 
     In addition, the Merger Agreement provides that Parent will cause the
Surviving Corporation, until the sixth anniversary of the Effective Time, to
maintain in effect policies of directors' and officers' liability insurance for
directors and officers of the Company on terms no less favorable than the
existing coverage maintained by the Company as of the date of the Merger
Agreement; provided, however, that Parent shall not be required in order to
maintain or procure such coverage to pay an annual premium in excess of 150% of
the current annual premium paid by the Company for its existing coverage (the
"Cap"); and provided, further, that if equivalent coverage cannot be obtained,
or can be obtained only by paying an annual premium in excess of the Cap, Parent
shall only be required to obtain as much coverage as can be obtained by paying
an annual premium equal to the Cap.
 
THE MERGER AGREEMENT
 
     The following is a summary of certain provisions of the Merger Agreement, a
copy of which is attached hereto as ANNEX B. The following summary is qualified
in its entirety by reference to the Merger Agreement.
 
                                       18
<PAGE>   21
 
     The Offer. The Merger Agreement provides for the making of the Offer by
Parent. The obligation of Parent to accept for payment and pay for Shares
tendered pursuant to the Offer is subject to the satisfaction of the Minimum
Condition, and certain other conditions that are described in "THE TENDER
OFFER -- Certain Conditions of the Offer." Parent has agreed that, without the
written consent of the Company (as recommended by the Special Committee), no
change in the Offer may be made which changes the form of consideration to be
paid or decreases the price per Share or the number of Shares sought in the
Offer, which waives or reduces, in whole or part, the Minimum Condition, which
imposes conditions to the Offer in addition to the Minimum Condition, and those
conditions described in "THE TENDER OFFER -- Certain Conditions of the Offer" or
which changes any other material term of the Offer in a manner adverse to the
stockholders of the Company (other than Parent).
 
     The Merger. The Merger Agreement provides that, following the purchase of
Shares pursuant to the Offer, the approval of the Merger Agreement by the
stockholders of the Company and the satisfaction or waiver of the other
conditions to the Merger, Newco will be merged with and into the Company. Under
the Company's certificate of incorporation and Delaware law, the approval of the
affirmative vote of the holders of the Shares representing 66 2/3% of the
outstanding Shares is required to approve and adopt the Merger Agreement and the
Merger. The Merger shall become effective at such time as a certificate of
merger or certificate of ownership and merger is filed with the Delaware
Secretary of State or at such later time as is specified in such certificate of
merger (the "Effective Time"). As a result of the Merger, all of the properties,
rights, privileges and franchises of the Company and Newco shall vest in the
Surviving Corporation, and all debts, liabilities and duties of the Company and
Newco shall become the debts, liabilities and duties of the Surviving
Corporation.
 
     At the Effective Time, (i) each issued and outstanding Share owned or held
by Parent or any direct or indirect subsidiary of Parent (other than the
Company) shall remain issued and outstanding and no payment shall be made with
respect thereto; (ii) each issued and outstanding Share owned or held by the
Company or any direct or indirect subsidiary of the Company shall be canceled
and no payment shall be made with respect thereto; (iii) each share of common
stock of Newco shall be canceled, and no payment shall be made with respect
thereto; and (iv) each Share outstanding immediately prior to the Effective Time
shall, except as otherwise provided in (i) or (ii) above and except for Shares
held by any holder who has not voted in favor of the Merger or consented thereto
in writing and who has demanded appraisal for such Shares in accordance with
Section 262 of the DGCL, be converted into the right to receive $9.00 in cash,
without interest, less any required withholding taxes.
 
     The Merger Agreement provides that the certificate of incorporation and
bylaws of the Company at the Effective Time will be the certificate of
incorporation of the Surviving Corporation. The Merger Agreement also provides
that the directors of Newco at the Effective Time plus John R. Meyers, a current
director and the President and Chief Executive Officer of the Company, will be
the directors of the Surviving Corporation and the officers of the Company at
the Effective Time will be the officers of the Surviving Corporation.
 
     Recommendation. The Merger Agreement states that (A) the Special Committee
has (i) determined as of March 15, 1999 that the Offer and the Merger, taken
together, are fair to the Company and its stockholders and in the best interests
of the holders of the Shares (other than Parent and certain affiliates) and (ii)
resolved as of March 15, 1999 to recommend acceptance of the Offer and approval
and adoption of the Merger Agreement and the Merger to the Board, and (B) that
the Board has (i) determined as of March 15, 1999 that the Offer and the Merger,
taken together, are fair to the Company and its stockholders and in the best
interests of the holders of the Shares (other than Parent and certain
affiliates) as well as fair to and in the best interests of the Company and its
stockholders (other than Parent and certain affiliates), (ii) resolved as of
March 15, 1999 to recommend acceptance of the Offer and approval and adoption of
the Merger Agreement and the Merger to the Company's stockholders (other than
Parent and certain affiliates).
 
     Rights Plan. Pursuant to the Rights Agreement, the Rights will not be
triggered by the Offer or the Merger. Pursuant to the Merger Agreement, the
Company amended the Rights Agreement to provide that the Offer would not
constitute an event resulting in a "Distribution Date" (as such term is defined
in the Rights Agreement).
 
                                       19
<PAGE>   22
 
     Stock Options; Performance Unit Awards. The Company has agreed to cooperate
with Parent to terminate the 1991 Stock Option Plan and the 1995 Performance
Award Program of the Company. Parent currently contemplates that (i) each
outstanding stock option with an exercise price less than $9.00 per Share to
purchase Shares, whether or not then exercisable, will be canceled immediately
prior to the consummation of the Merger in exchange for an amount in cash
payable at the time of such cancellation equal to the product of (x) the number
of Shares subject to such stock option and unexercised immediately prior to the
consummation of the Merger and (y) the excess of the Offer Price to be paid in
the Offer over the per share exercise price pursuant to such stock option, and
(ii) each outstanding stock option having an exercise price of $9.00 per Share
or more to purchase Shares, whether or not then exercisable, will be canceled
and exchanged for a cash payment of $0.10 for each such stock option for full
release of claims under such stock options. All outstanding Performance Award
Units will vest upon consummation of the Merger and the cash due to such holders
thereof will be paid upon the closing of the Merger. See "Interests of Certain
Persons in the Offer and the Merger."
 
     Interim Agreements of Parent, Newco and the Company. Pursuant to the Merger
Agreement, the Company has covenanted and agreed that, during the period from
the date of the Merger Agreement to the Effective Time, the Company will conduct
its operations according to its ordinary and usual course of business consistent
with past practice; that the Company will not intentionally take or willfully
omit to take any actions that results in or would result in a Company Material
Adverse Effect (as defined below); that the Company will use its reasonable best
efforts to preserve intact the business organization of the Company, to keep
available the services of its present officers and key employees and
consultants, and to maintain satisfactory relationships with customers, agents,
suppliers, and other persons having business relationships with the Company.
Pursuant to the Merger Agreement, without limiting the generality of the
foregoing, and except as otherwise expressly provided in the Merger Agreement,
the Company will not (a) issue, sell, or dispose of additional shares of capital
stock of any class (including the Shares) of the Company, or securities
convertible into or exchangeable for any such shares or securities, or any
rights, warrants, or options to acquire any such shares or securities, other
than Shares issued upon exercise of options disclosed pursuant to the Merger
Agreement, in each case in accordance with the terms so disclosed; (b) redeem,
purchase, or otherwise acquire, or propose to redeem, purchase, or otherwise
acquire, any of its outstanding capital stock, or other securities of the
Company; (c) split, combine, subdivide, or reclassify any of its capital stock
or declare, set aside, make, or pay any dividend or distribution on any shares
of its capital stock; (d) sell, pledge, dispose of, or encumber any of its
assets, except for sales, pledges, dispositions, or encumbrances in the ordinary
course of business consistent with past practices; (e) incur or modify any
indebtedness or issue or sell any debt securities, or assume, guarantee,
endorse, or otherwise as an accommodation become absolutely or contingently
responsible for obligations of any other person, or make any loans or advances,
other than in the ordinary course of business consistent with past practices;
(f) adopt or amend any bonus, profit sharing, compensation, severance,
termination, stock option, pension, retirement, deferred compensation,
employment or other employee benefit agreements, trusts, plans, funds, or other
arrangements for the benefit or welfare of any director, officer, or employee,
or (except for normal increases in the ordinary course of business that are
consistent with past practices and that, in the aggregate, do not result in a
material increase in benefits or compensation expense to the Company) increase
in any manner the compensation or fringe benefits of any director, officer, or
employee or pay any benefit not required by any existing plan or arrangement
(including, without limitation, the granting or vesting of stock options or
stock appreciation rights) or take any action or grant any benefit not expressly
required under the terms of any existing agreements, trusts, plans, funds, or
other such arrangements or enter into any contract, agreement, commitment, or
arrangement to do any of the foregoing or make or agree to make any payments to
any directors, officers, agents, contractors, or employees relating to a change
or potential change in control of the Company; (g) acquire by merger,
consolidation, or acquisition of stock or assets any corporation, partnership,
or other business organization or division or make any investment either by
purchase of stock or securities, contributions to capital, property transfer, or
purchase of any material amount of property or assets, in any other person; (h)
adopt any amendments to its certificate of incorporation or bylaws, except as
required by the Merger Agreement; (i) take any action other than in the ordinary
course of business and consistent with past practices, to pay, discharge,
settle, or satisfy any claim, liability, or obligation (absolute or contingent,
accrued or unaccrued, asserted or unasserted, or otherwise);
 
                                       20
<PAGE>   23
 
(j) change any method of accounting or accounting practice used by the Company,
except for any change required by reason of a concurrent change in generally
accepted accounting principles; (k) revalue in any respect any of its assets,
including, without limitation, writing down the value of its portfolio or
writing off notes or accounts receivable other than in the ordinary course of
business consistent with past practices; (l) authorize any unbudgeted capital
expenditure or expenditures that, individually, is in excess of $300,000 or, in
the aggregate, are in excess of $500,000; (m) make any tax election, settle or
compromise any federal, state, or local tax liability or consent to the
extension of time for the assessment or collection of any federal, state, or
local tax; (n) settle or compromise any pending or threatened suit, action, or
claim material to the Company or relevant to the transactions contemplated by
this Agreement; (o) enter into any agreement, arrangement, or understanding to
do any of the foregoing actions; (p) voluntarily take any action or willfully
omit to take any action that could make any representation or warranty of the
Company in the Merger Agreement untrue or incorrect in any material respect at
any time, including as of the date of the Merger Agreement and as of the time of
consummation of the Offer and the Effective Time, as if made as of such time.
 
     Parent has agreed not to take any action for the purpose of causing the
Company to violate any of the foregoing obligations and agreed to take all
action necessary to allow the Company to comply with its obligations under the
Merger Agreement.
 
     Pursuant to the Merger Agreement, Parent and Newco will each hold and will
each cause its consultants and advisors to hold in confidence, unless compelled
to disclose by judicial or administrative process or by other requirements of
law, all documents and information concerning the Company and its subsidiaries
furnished to Parent or Newco in connection with the transactions contemplated by
the Merger Agreement (except to the extent that such information can be shown to
have been (i) previously known by Parent or Newco from sources other than the
Company, or its directors, officers, representatives or affiliates, (ii) in the
public domain through no fault of Parent or Newco or (iii) later lawfully
acquired by Parent or Newco from other sources who are not known by Parent or
Newco to be bound by a confidentiality agreement or otherwise prohibited from
transmitting the information to Parent or Newco by a contractual, legal or
fiduciary obligation) and will not release or disclose such information to any
other person, except its auditors, attorneys, financial advisors and other
consultants and advisors in connection with the Merger Agreement and the
transactions contemplated thereby. Parent and Newco will each be deemed to have
satisfied its obligation to hold such information confidential if it exercises
the same care as it takes to preserve confidentiality for its own similar
information.
 
     In the Merger Agreement the Company, its affiliates and their respective
officers, directors, employees, representatives and agents have agreed that they
shall immediately cease any existing discussions or negotiations, if any, with
any parties conducted heretofore with respect to any acquisition of all or any
material portion of the assets of, or any equity interest in, the Company or any
business combination with the Company, subject to certain exceptions. The
Company may, directly or indirectly, furnish information and access, in each
case only in response to unsolicited requests therefor, to any corporation,
partnership, person or other entity or group pursuant to confidentiality
agreements, and may participate in discussions and negotiate with such entity or
group concerning any merger, sale of assets, sale of shares of capital stock or
similar transaction involving the Company, if such entity or group has submitted
a written proposal to the Special Committee or the Board relating to any such
transaction and the Special Committee or the Board by a majority vote determines
in its good faith judgment, after consultation with its financial and legal
advisors, that failing to take such action would constitute a breach of the
Special Committee's or the Board's fiduciary duty. The Special Committee or the
Board shall provide a copy of any such written proposal to Parent immediately
after receipt thereof and thereafter keep Parent promptly advised of any
development with respect thereto. Except as set forth above, neither the Company
nor any of its affiliates, nor any of its or their respective officers,
directors, employees, representatives or agents, shall, directly or indirectly,
encourage, solicit, participate in or initiate discussions or negotiations with,
or provide any information to, any corporation, partnership, person or other
entity or group (other than Parent and Newco, any affiliate of Parent and Newco
or any designees of Parent and Newco) concerning any merger, sale of assets,
sale of shares or capital stock or similar transaction involving the Company;
provided, however, that nothing in the Merger Agreement shall
 
                                       21
<PAGE>   24
 
prevent the Board from taking, and disclosing to the Company's stockholders, a
position contemplated by Rules 14d-9 and 14e-2 promulgated under the Exchange
Act with regard to any tender offer; provided, further, that the Board shall not
recommend that the stockholders of the Company tender their Shares in connection
with any such tender offer unless the Special Committee or the Board by a
majority vote determines in its good faith judgment, after consultation with its
financial and legal advisors, that failing to take such action would constitute
a breach of the Special Committee's or Board's fiduciary duty. Additionally,
Parent has agreed to notify the Company of any bona fide proposal received by
Parent regarding a Third Party Acquisition (as defined below) and if it obtains
any information that would make certain representations and warranties of the
Company untrue or inaccurate in any material respect.
 
     Between the date hereof and the Effective Time, the Company will give, upon
reasonable notice, Parent and Newco and their authorized representatives
reasonable access to all employees and properties and to all books and records
of the Company, and will cause the Company's officers to furnish Parent and
Newco with such financial and operating data and other information with respect
to the business and properties of the Company as Parent or Newco may from time
to time reasonably request.
 
     Pursuant to the Merger Agreement, the Company shall cause promptly after
completion of the Offer a meeting of its stockholders (the "Company Stockholder
Meeting") to be duly called and held for the purposes of voting on the approval
and adoption of the Merger Agreement and the Merger. The Merger Agreement
provides that the Company and Parent will cooperate and use all reasonable
efforts to prepare, and the Company and Parent will file with the Commission, as
soon as reasonably practical after completion of the offer, a proxy or
information statement relating to the Company Stockholder Meeting (the "Proxy
Statement"). The Company has agreed, subject to the fiduciary duties of the
Special Committee and the Board, to use all reasonable efforts to obtain the
necessary approvals by its stockholders of the Merger Agreement and the
transactions contemplated thereby. Parent has agreed to vote and to cause its
affiliates to vote all Shares owned by them or as to which a proxy or power of
attorney is held by them, including the Shapiro Proxy, in favor of adoption of
the Merger Agreement.
 
     Parent and Newco have each agreed that all rights to indemnification or
exculpation now existing in favor of the directors, officers, employees and
agents of the Company as provided in the Company's certificate of incorporation
or bylaws shall, to the extent such rights are in accordance with applicable
law, survive the Merger and stay in effect in accordance with their respective
terms for a period of six years after the Effective Time.
 
     The Merger Agreement also provides that Parent will cause the Surviving
Corporation, until the sixth anniversary of the Effective Time, to maintain in
effect policies of directors' and officers' liability insurance for directors
and officers of the Company on terms no less favorable than the existing
coverage maintained by the Company as of the date of the Merger Agreement;
provided, however, that Parent shall not be required in order to maintain or
procure such coverage to pay an annual premium in excess of 150% of the current
annual premium paid by the Company for its existing coverage (the "Cap"); and
provided, further, that if equivalent coverage cannot be obtained, or can be
obtained only by paying an annual premium in excess of the Cap, Parent shall
only be required to obtain as much coverage as can be obtained by paying an
annual premium equal to the Cap.
 
     The Merger Agreement provides that the Company, Newco and Parent will each
use all reasonable efforts to consummate the transactions contemplated by the
Merger Agreement.
 
     Representations and Warranties. The Merger Agreement contains various
customary representations and warranties of the parties thereto including,
without limitation, representations by the Company, Parent and Newco as to
organization, corporate power and authority to execute, deliver and consummate
the Merger Agreement, and necessary consents and approvals. In addition, the
Company has made representations and warranties concerning undisclosed
liabilities, certain changes or events concerning its businesses and the
accuracy of its financial statements and its filings under the Exchange Act and
the Securities Act. All of the Company's representations and warranties are
qualified to the extent of Parent's knowledge of a breach or inaccuracy of such
representations and warranties as of the date of the Merger Agreement. Parent
has made additional representations and warranties concerning the Company's
filings under the Exchange Act and
                                       22
<PAGE>   25
 
Securities Act, the availability of the funds necessary to consummate the Offer
and the Merger, and the Company's ability to comply with its obligations under
the Merger Agreement.
 
     Conditions to the Merger. The obligations of each of Parent, Newco and the
Company to effect the Merger are subject to the satisfaction of certain
conditions, including: (a) the Merger Agreement shall have been adopted by the
affirmative vote of the stockholders of the Company by the requisite vote in
accordance with the certificate of incorporation and bylaws of the Company and
with applicable law; (b) no statute, rule, regulation, executive order, decree,
ruling or injunction shall have been enacted, entered, promulgated or enforced
by any United States court or United States governmental authority which
prohibits, restrains, enjoins or restricts the consummation of the Merger or
which imposes any limitation on the ability of Parent to exercise rights of
ownership of the Shares owned by Parent that will result in a Parent Material
Adverse Effect (as defined in the Merger Agreement) provided that the parties
will use their respective reasonable best efforts to have any such injunction,
decree or order lifted; (c) any waiting period applicable to the Merger under
the HSR Act shall have terminated or expired and all required filings, consents,
approvals, permits and authorizations with or for governmental authorities have
been made or obtained; and (d) the Company shall have purchased Shares pursuant
to the Offer (except that Parent in its sole discretion may waive conditions to
the Offer).
 
     Termination. The Merger Agreement may be terminated: (a) by mutual written
consent of Parent, Newco and the Company (upon recommendation of the Special
Committee); (b) by Parent and Newco or the Company if any court of competent
jurisdiction in the United States or other United States governmental body shall
have issued a final order, decree or ruling or taken any other final action
restraining, enjoining or otherwise prohibiting the Merger and such order,
decree, ruling or other action shall have become final and nonappealable; (c) by
Parent and Newco if due to an occurrence or circumstances that would result in a
failure to satisfy any of the conditions set forth in "THE TENDER
OFFER -- Certain Conditions," Parent has (i) failed to commence the Offer within
five days following the initial public announcement of the Offer, (ii)
terminated the Offer or (iii) failed to pay for Shares pursuant to the Offer by
July 31, 1999; (d) by the Company if (i) there has not been a breach of any
material representation, warranty, covenant, or agreement on the part of the
Company, and Parent has (A) failed to commence the Offer within five business
days following the date of the initial public announcement of the Offer, (B)
terminated the Offer, (C) failed to pay for the Shares pursuant to the Offer by
July 31, 1999, or (ii) prior to the purchase of Shares pursuant to the Offer, a
person or group has made a bona fide offer that the Special Committee or the
Board by a majority vote determines in its good faith judgment and in the
exercise of its fiduciary duties, after consultation with its financial and
legal advisors, is more favorable to the stockholders of the Company than the
Offer and the Merger; (e) by Parent and Newco prior to the purchase of Shares
pursuant to the Offer if (i) there shall have been a breach (not cured or
curable within certain time limits) of any representation or warranty on the
part of the Company having a Company Material Adverse Effect or materially
adversely affecting (or materially delaying) the ability of Parent to consummate
the Offer and the Merger, (ii) there shall have been a breach (not cured or
curable within certain time limits) of any covenant or agreement on the part of
the Company resulting in a Company Material Adverse Effect or materially
adversely affecting (or materially delaying) the ability of Parent to consummate
the Offer and the Merger, (iii) the Special Committee shall engage in
negotiations with any entity or group (other than Parent or Newco) that has
proposed a Third Party Acquisition (as defined below) (with certain exceptions),
(iv) the Company enters into an agreement, letter of intent or arrangement with
respect to a Third Party Acquisition (as defined below), (v) the Special
Committee or the Board shall have withdrawn or modified in an adverse manner its
approval or recommendation of the Offer, the Merger Agreement or the Merger or
shall have recommended another offer, or shall have adopted any resolution to
effect any of the foregoing or (vi) the Minimum Condition shall not have been
satisfied by the expiration date of the Offer and on or prior to such date (A)
an entity or group (other than Parent or Newco) shall have made and not
withdrawn a proposal with respect to a Third Party Acquisition or (B) any person
or group (including the Company) other than Parent, its affiliates (other than
the Company) or Shapiro Capital has become the beneficial owner of 19.9% (except
in bona fide arbitrage transactions) or more of the Shares; or (f) by the
Company if (i) there shall have been a breach of any representation or warranty
on the part of Parent or Newco which materially adversely affects (or materially
delays) the consummation of the Offer or (ii) there shall have been a material
breach of any covenant or agreement on
                                       23
<PAGE>   26
 
the part of Parent or Newco and which materially adversely affects (or
materially delays) the consummation of the Offer or the Merger.
 
     Termination Fee. If (i) Parent and Newco terminate the Merger Agreement
pursuant to clause (e)(v) of the preceding paragraph; or (ii) the Company
terminates the Merger Agreement pursuant to clause (d)(ii) of the preceding
paragraph, then the Company shall pay to Parent and Newco, within one business
day following such termination, a fee, in cash, of $675,000 (inclusive of all
fees and expenses incurred by Parent, Newco and their affiliates (other than the
Company) in connection with the transactions contemplated by the Merger
Agreement) (the "Termination Fee").
 
     "Third Party Acquisition" means the occurrence of any of the following
events (i) the acquisition of the Company by merger or otherwise by any person
(which includes a "person" as such term is defined in Section 13(d)(3) of the
Exchange Act) or entity other than Parent, Newco or any affiliate thereof (other
than the Company) or Shapiro Capital (a "Third Party"); (ii) the acquisition by
Third Party of 19.9% or more of the assets of the Company; (iii) the acquisition
by Third Party of 19.9% or more of the outstanding Shares; (iv) the adoption by
the Company of a plan of liquidation or the declaration or payment of an
extraordinary dividend; or (v) the repurchase by the Company of 19.9% or more of
the outstanding Shares.
 
     Pursuant to the Merger Agreement, in the event of the termination and
abandonment of the Merger Agreement, the Merger Agreement will become void and
have no effect, without any liability on the part of any party or its directors,
officers or Stockholders, other than certain provisions of the Merger Agreement
relating to the termination fee, expenses of the parties and confidentiality of
information, provided, that a party will not be relieved from liability for any
breach of the Merger Agreement.
 
     Costs and Expenses. Except for the Termination Fee, if applicable, and as
discussed below, the Merger Agreement provides that all costs and expenses
incurred in connection with the transactions contemplated by the Merger
Agreement shall be paid by the party incurring such costs and expenses. Parent
has agreed to reimburse the Company for all expenses incurred with providing
Parent the Company's stockholder lists, security position listings and mailing
labels used in connection with the dissemination of the Offer to the holders of
Shares.
 
DISSENTERS' RIGHTS
 
     Holders of Shares do not have dissenters' rights as a result of the Offer.
However, if the Merger is consummated, holders of Shares will have certain
rights pursuant to the provisions of Section 262 of the DGCL to dissent and
demand appraisal of, and to receive payment in cash of the fair value of, their
Shares. If the statutory procedures were complied with, such rights could lead
to a judicial determination of the fair value required to be paid in cash to
such dissenting holders for their shares. Any such judicial determination of the
fair value of Shares could be based upon considerations other than or in
addition to the Offer Price or the market value of the Shares, including asset
values and the investment value of the Shares. The value so determined could be
more or less than the Offer Price or the Merger Consideration.
 
     If any stockholder of Shares who demands appraisal under Section 262 of the
DGCL fails to perfect, or effectively withdraws or loses his right to appraisal,
as provided in the DGCL, the Shares of such stockholder will be converted into
the Merger Consideration in accordance with the Merger Agreement. A stockholder
may withdraw his demand for appraisal by delivery to Parent of a written
withdrawal of his demand for appraisal and acceptance of the Merger.
 
     ANNEX E to this Offer to Purchase sets forth in full Section 262 of the
DGCL. The foregoing summary thereof is qualified in its entirety by reference
thereto.
 
     FAILURE TO FOLLOW THE STEPS REQUIRED BY SECTION 262 OF THE DGCL FOR
PERFECTING APPRAISAL RIGHTS MAY RESULT IN THE LOSS OF SUCH RIGHTS. SEE ANNEX E.
 
                                       24
<PAGE>   27
 
CERTAIN FEDERAL INCOME TAX CONSIDERATIONS
 
     Sales of Shares pursuant to the Offer (and the receipt of the right to
receive cash by stockholders of the Company pursuant to the Merger) will be
taxable transactions for Federal income tax purposes under the Internal Revenue
Code of 1986, as amended (the "Code"), and may also be taxable transactions
under applicable state, local, foreign and other tax laws. For Federal income
tax purposes, a tendering stockholder will generally recognize gain or loss
equal to the difference between the amount of cash received by the stockholder
pursuant to the Offer (or to be received pursuant to the Merger) and the
aggregate tax basis in the Shares tendered by the stockholder and purchased
pursuant to the Offer (or canceled pursuant to the Merger). Gain or loss will be
calculated separately for each block of Shares tendered and purchased pursuant
to the Offer (or canceled pursuant to the Merger).
 
     If tendered Shares are held by a tendering stockholder as capital assets,
gain or loss recognized by the tendering stockholder will be capital gain or
loss, which will be long-term capital gain or loss if the tendering
stockholder's holding period for the Shares exceeds one year. Under present law,
long-term capital gains recognized by a tendering individual stockholder will
generally be taxed at a maximum Federal marginal tax rate of 20%.
 
     A stockholder (other than certain exempt stockholders including, among
others, all corporations and certain foreign individuals) that tenders Shares
may be subject to 31% backup withholding unless the stockholder provides its Tax
Identification Number ("TIN") and certifies that such number is correct or
properly certifies that it is awaiting a TIN. A stockholder that does not
furnish its TIN may be subject to a penalty imposed by the IRS. Each stockholder
should complete and sign the Substitute From W-9 included as part of the Letter
of Transmittal so as to provide the information and certification necessary to
avoid backup withholding.
 
     If backup withholding applies to a stockholder, the Depositary is required
to withhold 31% from payments to such stockholder. Backup withholding is not an
additional tax. Rather, the amount of the backup withholding can be credited
against the Federal income tax liability of the person subject to the backup
withholding, provided that the required information is given to the IRS. If
backup withholding results in an overpayment of tax, a refund can be obtained by
the stockholder upon filing an income tax return.
 
     THE FOREGOING DISCUSSION MAY NOT BE APPLICABLE WITH RESPECT TO SHARES
RECEIVED PURSUANT TO THE EXERCISE OF EMPLOYEE STOCK OPTIONS OR OTHERWISE AS
COMPENSATION OR WITH RESPECT TO HOLDERS OF SHARES WHO ARE SUBJECT TO SPECIAL TAX
TREATMENT UNDER THE CODE, SUCH AS NON-U.S. PERSONS, LIFE INSURANCE COMPANIES,
TAX-EXEMPT ORGANIZATIONS AND FINANCIAL INSTITUTIONS, AND MAY NOT APPLY TO A
HOLDER OF SHARES IN LIGHT OF ITS INDIVIDUAL CIRCUMSTANCES. STOCKHOLDERS ARE
URGED TO CONSULT THEIR OWN TAX ADVISORS TO DETERMINE THE PARTICULAR TAX
CONSEQUENCES TO THEM (INCLUDING THE APPLICATION AND EFFECT OF ANY STATE, LOCAL
OR FOREIGN INCOME AND OTHER TAX LAWS) OF THE OFFER AND THE MERGER.
 
                                THE TENDER OFFER
 
TERMS OF THE OFFER
 
     Upon the terms and subject to the conditions of the Offer, Parent will
accept for payment and pay for all Shares validly tendered prior to the
Expiration Date and not theretofore withdrawn in accordance with the procedures
set forth below under "Withdrawal Rights." The term "Expiration Date" means
12:00 Midnight, New York City time, on Tuesday, April 20, 1999, unless and until
Parent shall have extended the period of time during which the Offer is open, as
extended, in which event the term "Expiration Date" shall mean the latest time
and date at which the Offer, as so extended by Parent, shall expire.
 
     The Offer is subject to certain conditions set forth in "Certain Conditions
of the Offer," including satisfaction of the Minimum Condition and the
expiration or termination of the waiting period applicable to
                                       25
<PAGE>   28
 
the Transaction under the HSR Act. If any such condition is not satisfied,
Parent may (1) terminate the Offer and return all tendered Shares to tendering
stockholders, (2) extend the Offer and, subject to withdrawal rights as set
forth below in "Withdrawal Rights," retain all such Shares until the expiration
of the Offer as so extended, (3) waive such condition and, subject to any
requirements to extend the period of time during which the Offer is open,
purchase all Shares validly tendered by the Expiration Date and not withdrawn or
(4) delay acceptance for payment of or payment for Shares, subject to applicable
law, until satisfaction or waiver of the conditions to the Offer; provided,
however, that unless previously approved by the Company (as recommended by the
Special Committee) in writing, no change may be made which decreases the price
per Share payable in the Offer, which changes the form of consideration to be
paid in the Offer, which reduces the maximum number of Shares to be purchased in
the Offer, which waives or reduces, in whole or part, the Minimum Condition,
which imposes conditions to the Offer in addition to those set forth in "Certain
Conditions of the Offer" or which broadens the scope of such conditions or which
changes any other material term of the Offer in a manner adverse to the
stockholders of the Company (other than Parent). In the Merger Agreement, Parent
has agreed, subject to the conditions contained in "Certain Conditions of the
Offer" and its rights under the Offer, to accept for payment Shares as soon as
practicable after the latest of (1) the date on which the waiting period under
the HSR Act has expired or been terminated, (2) the date on which the conditions
set forth in "Certain Conditions of the Offer" are fulfilled and there is no
right to terminate the Offer (subject to Parent's right to extend the Offer)
pursuant to the provisions contained in "Certain Conditions of the Offer" and
(3) the earliest date on which the Offer can expire under federal law. For a
description of Parent's right to extend the period of time during which the
Offer is open, and to amend, delay or terminate the Offer, see "SPECIAL
FACTORS -- The Merger Agreement."
 
     There can be no assurance that Parent will exercise its right to extend the
Offer (other than as required by applicable law). Any extension, waiver,
amendment or termination will be followed as promptly as practicable by public
announcement. In the case of an extension, Rule 14e-1(d) under the Exchange Act
requires that the announcement be issued no later than 9:00 a.m., New York City
time, on the next business day after the previously scheduled Expiration Date in
accordance with the public announcement requirements of Rule 14d-4(d) under the
Exchange Act. Subject to applicable law (including Rules 14d-4(c) and 14d-6(d)
under the Exchange Act, which require that any material change in the
information published, sent or given to stockholders in connection with the
Offer be promptly disseminated to stockholders in a manner reasonably designed
to inform stockholders of such change), and without limiting the manner in which
Parent may choose to make any public announcement, Parent will not have any
obligation to publish, advertise or otherwise communicate any such public
announcement other than by making a release to the Dow Jones News Service.
 
     If Parent extends the Offer or if Parent (whether before or after its
acceptance for payment of Shares) is delayed in its acceptance for payment of or
payment for Shares or it is unable to pay for Shares pursuant to the Offer for
any reason, then, without prejudice to Parent's rights under the Offer, the
Depositary may retain tendered Shares on behalf of Parent, and such Shares may
not be withdrawn except to the extent tendering stockholders are entitled to
withdrawal rights as described in "Withdrawal Rights." However, the ability of
Parent to delay the payment for Shares that Parent has accepted for payment is
limited by Rule 14e-1 under the Exchange Act, which requires that a bidder pay
the consideration offered or return the securities deposited by or on behalf of
holders of securities promptly after the termination or withdrawal of such
bidder's offer.
 
     If Parent makes a material change in the terms of the Offer or the
information concerning the Offer or waives a material condition of the Offer
(including, with the Company's consent (as recommended by the Special
Committee), a waiver of the Minimum Condition), Parent will disseminate
additional tender offer materials and extend the Offer to the extent required by
Rules 14d-4(c), 14d-6(d) and 14e-1 under the Exchange Act. The minimum period
during which an offer must remain open following material changes in the terms
of the Offer or information concerning the Offer, other than a change in price
or a change in the percentage of securities sought, will depend upon the facts
and circumstances then existing, including the relative materiality of the
changed terms or information. With respect to a change in price or a change in
the percentage of securities sought, a minimum period of 10 business days is
generally required to allow for adequate dissemination to stockholders.
 
                                       26
<PAGE>   29
 
     The Company has provided Parent with the Company's stockholder lists and
security position listings for the purpose of disseminating the Offer to holders
of the Shares. This Offer to Purchase, the related Letter of Transmittal and
other relevant materials will be mailed by the Company to record holders of
Shares and will be furnished by Parent to brokers, dealers, banks, trust
companies and similar persons whose names, or the names of whose nominees,
appear on the stockholder lists or, if applicable, who are listed as
participants in a clearing agency's security position listing, for subsequent
transmittal to beneficial owners of Shares.
 
PROCEDURE FOR TENDERING SHARES
 
     Valid Tender. For a stockholder validly to tender Shares pursuant to the
Offer, either (1) a properly completed and duly executed Letter of Transmittal
(or facsimile thereof), together with any required signature guarantees, or an
Agent's Message (as defined below) in connection with a book-entry delivery of
Shares, and any other documents required by the Letter of Transmittal, must be
received by the Depositary at one of its addresses set forth on the back cover
of this Offer to Purchase and either certificates for tendered Shares must be
received by the Depositary at one of such addresses or such Shares must be
delivered pursuant to the procedure for book-entry transfer set forth below (and
a Book-Entry Confirmation (as defined below) received by the Depositary), in
each case prior to the Expiration Date, or (2) the tendering stockholder must
comply with the guaranteed delivery procedure set forth below.
 
     Book-Entry Delivery. The Depositary will establish an account with respect
to the Shares at The Depository Trust Company (the "Book-Entry Transfer
Facility") for purposes of the Offer within two business days after the date of
this Offer. Any financial institution that is a participant in the Book-Entry
Transfer Facility's system may make book-entry delivery of Shares by causing the
Book-Entry Transfer Facility to transfer such Shares into the Depositary's
account in accordance with the Book-Entry Transfer Facility's procedures for
such transfer. However, although delivery of Shares may be effected through
book-entry transfer into the Depositary's account at the Book-Entry Transfer
Facility, the Letter of Transmittal (or facsimile thereof), properly completed
and duly executed, with any required signature guarantees, or an Agent's Message
in connection with a book-entry transfer, and any other required documents,
must, in any case, be transmitted to, and received by, the Depositary at one of
its addresses set forth on the back cover of this Offer to Purchase prior to the
Expiration Date, or the tendering stockholder must comply with the guaranteed
delivery procedure described below. The confirmation of a book-entry transfer of
Shares into the Depositary's account at the Book-Entry Transfer Facility as
described above is referred to herein as a "Book-Entry Confirmation." DELIVERY
OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY IN ACCORDANCE WITH THE
BOOK-ENTRY TRANSFER FACILITY'S PROCEDURES DOES NOT CONSTITUTE DELIVERY TO THE
DEPOSITARY.
 
     THE METHOD OF DELIVERY OF SHARES, THE LETTER OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH ANY BOOK-ENTRY TRANSFER FACILITY,
IS AT THE ELECTION AND RISK OF THE TENDERING STOCKHOLDER. SHARES WILL BE DEEMED
DELIVERED ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY. IF DELIVERY IS BY MAIL,
REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS RECOMMENDED.
IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
     The term "Agent's Message" means a message, transmitted by the Book-Entry
Transfer Facility to, and received by, the Depositary and forming a part of a
Book-Entry Confirmation, which states that the Book-Entry Transfer Facility has
received an express acknowledgment from the participant in the Book-Entry
Transfer Facility tendering the Shares, and, if applicable, Rights which are
subject to such Book-Entry Confirmation, that such participant has received and
agrees to be bound by the terms of the Letter of Transmittal and that Parent may
enforce such agreement against such participant.
 
     Signature Guarantees. No signature guarantee is required on the Letter of
Transmittal if (1) the Letter of Transmittal is signed by the registered holder
of Shares (which term includes any participant in the Book-Entry Transfer
Facility's system whose name appears on a security position listing as the owner
of the Shares) tendered therewith and such registered holder has not completed
either the box entitled "Special Delivery
 
                                       27
<PAGE>   30
 
Instructions" or the box entitled "Special Payment Instructions" on the Letter
of Transmittal or (2) such Shares are tendered for the account of a firm that is
a member of the Medallion Signature Guaranty Program or by any other "eligible
guaranty institution" as such term is defined in Rule 17Ad-15 under the Exchange
Act (each of the foregoing being referred to as an "Eligible Institution"). In
all other cases, all signatures on the Letters of Transmittal must be guaranteed
by an Eligible Institution. See Instructions 1 and 5 to the Letter of
Transmittal. If the certificates for Shares are registered in the name of a
person other than the signer of the Letter of Transmittal, or if payment is to
be made or certificates for Shares not tendered or not accepted for payment are
to be issued to a person other than the registered holder of the certificates
surrendered, the tendered certificates must be endorsed or accompanied by
appropriate stock powers, in either case signed exactly as the name or names of
the registered holders or owners appear on the certificates, with the signatures
on the certificates or stock powers guaranteed as aforesaid. See Instruction 5
to the Letter of Transmittal.
 
     Guaranteed Delivery. If a stockholder desires to tender Shares pursuant to
the Offer and such stockholder's certificates for Shares are not immediately
available or the procedure for book-entry transfer cannot be completed on a
timely basis or time will not permit all required documents to reach the
Depositary prior to the Expiration Date, such stockholder's tender may be
effected if all the following conditions are met:
 
          (1) such tender is made by or through an Eligible Institution;
 
          (2) a properly completed and duly executed Notice of Guaranteed
     Delivery substantially in the form provided by Parent is received by the
     Depositary, as provided below, prior to the Expiration Date; and
 
          (3) the certificates for all tendered Shares, in proper form for
     transfer (or a Book-Entry Confirmation with respect to such Shares),
     together with a properly completed and duly executed Letter of Transmittal
     (or facsimile thereof), with any required signature guarantees (or, in the
     case of a book-entry transfer, or Agent's Message) and any other documents
     required by the Letter of Transmittal, are received by the Depositary
     within three trading days after the date of execution of such Notice of
     Guaranteed Delivery. A "trading day" is any day on which the New York Stock
     Exchange, Inc. is open for business.
 
     The Notice of Guaranteed Delivery may be delivered by hand to the
Depositary or transmitted by telegram, facsimile transmission or mail to the
Depositary and must include a guarantee by an Eligible Institution in the form
set forth in such Notice of Guaranteed Delivery.
 
     Notwithstanding any other provision hereof, payment for Shares accepted for
payment pursuant to the Offer will in all cases be made only after timely
receipt by the Depositary of (1) certificates for (or a timely Book-Entry
Confirmation with respect to) such Shares, (2) a Letter of Transmittal (or
facsimile thereof), properly completed and duly executed, with any required
signature guarantees, or Agent's Message in connection with a book-entry
transfer, and (3) any other documents required by the Letter of Transmittal.
Accordingly, tendering stockholders may be paid at different times depending
upon when certificates for Shares or Book-Entry Confirmations are actually
received by the Depositary. UNDER NO CIRCUMSTANCES WILL INTEREST BE PAID ON THE
PURCHASE PRICE OF THE SHARES TO BE PAID BY PARENT, REGARDLESS OF ANY EXTENSION
OF THE OFFER OR ANY DELAY IN MAKING SUCH PAYMENT.
 
     The valid tender of Shares pursuant to one of the procedures described
above will constitute a binding agreement between the tendering stockholder and
Parent upon the terms and subject to the conditions of the Offer.
 
     Appointment. By executing a Letter of Transmittal as set forth above, the
tendering stockholder will irrevocably appoint designees of Parent as such
stockholder's attorneys-in-fact and proxies in the manner set forth in the
Letter of Transmittal, each with full power of substitution, to the full extent
of such stockholder's rights with respect to the Shares tendered by such
stockholder and accepted for payment by Parent and with respect to any and all
other Shares or other securities or rights issued or issuable in respect of such
Shares on or after March 15, 1999. All such proxies shall be considered coupled
with an interest in the tendered Shares.
 
                                       28
<PAGE>   31
 
Such appointment will be effective when, and only to the extent that, Parent
accepts for payment Shares tendered by such stockholder as provided herein. Upon
such acceptance for payment, all prior powers of attorney and proxies given by
such stockholder with respect to such Shares or other securities or rights will,
without further action, be revoked and no subsequent powers of attorney and
proxies may be given (and, if given, will not be deemed effective). The
designees of Parent will thereby be empowered to exercise voting and other
rights with respect to such Shares or other securities or rights in respect of
any annual, special or adjourned meeting of the Company's stockholders, or
otherwise, as they in their sole discretion deem proper. Parent reserves the
right to require that, in order for Shares to be deemed validly tendered,
immediately upon Parent's acceptance for payment of such Shares, Parent must be
able to exercise voting and other rights with respect to such Shares and other
securities or rights, including voting at any meeting of stockholders then
scheduled.
 
     Determination of Validity. All questions as to the validity, form,
eligibility (including time of receipt) and acceptance of any tender of Shares
will be determined by Parent in its sole discretion, which determination will be
final and binding. Parent reserves the absolute right to reject any or all
tenders determined by it not to be in proper form or the acceptance for payment
of or payment for which may, in the opinion of Parent's counsel, be unlawful.
Parent also reserves the absolute right to waive any defect or irregularity in
any tender with respect to any particular Shares, whether or not similar defects
or irregularities are waived in the case of other Shares. No tender of Shares
will be deemed to have been validly made until all defects or irregularities
relating thereto have been cured or waived. None of Parent, the Depositary, the
Information Agent or any other person will be under any duty to give
notification of any defects or any other person will be under any duty to give
notification of any defects or irregularities in tenders or incur any liability
for failure to give any such notification. Parent's interpretation of the terms
and conditions of the Offer (including the Letter of Transmittal and the
instructions thereto) will be final and binding.
 
     Backup Withholding. In order to avoid "backup withholding" of Federal
income tax on payments of cash pursuant to the Offer, a stockholder surrendering
Shares in the Offer must provide the Depositary with such stockholder's correct
TIN on a Substitute Form W-9 and certify under penalties of perjury that such
TIN is correct and that such stockholder is not subject to backup withholding.
Certain stockholders (including, among others, all corporations and certain
foreign individuals and entities) are not subject to backup withholding. If a
stockholder does not provide its correct TIN or fails to provide the
certifications described above, the Internal Revenue Service ("IRS") may impose
a penalty on such stockholder and payment of cash to such stockholder pursuant
to the Offer may be subject to backup withholding of 31%. All stockholders
surrendering Shares pursuant to the Offer should complete and sign the main
signature form and the Substitute Form W-9 included as part of the Letter of
Transmittal to provide the information and certification necessary to avoid
backup withholding (unless an applicable exemption exists and is proved in a
manner satisfactory to Parent and the Depositary). Non-corporate foreign
stockholders should complete and sign the main signature form and a Form W-8,
Certificate of Foreign Status, a copy of which may be obtained from the
Depositary, in order to avoid backup withholding. See Instruction 9 to the
Letter of Transmittal.
 
WITHDRAWAL RIGHTS
 
     Except as otherwise provided herein, tenders of Shares are irrevocable.
Shares tendered pursuant to the Offer may be withdrawn pursuant to the
procedures set forth below at any time prior to the Expiration Date.
 
     For a withdrawal to be effective, a written, telegraphic or facsimile
transmission notice of withdrawal must be timely received by the Depositary at
one of its addresses set forth on the back cover of this Offer to Purchase and
must specify the name of the person having tendered the Shares to be withdrawn,
the number of Shares to be withdrawn and the name of the registered holder of
the Shares to be withdrawn, if different from the name of the person who
tendered the Shares. If certificates for Shares have been delivered or otherwise
identified to the Depositary, then, prior to the physical release of such
certificates, the serial numbers shown on such certificates must be submitted to
the Depositary and, unless such Shares have been tendered by an Eligible
Institution, the signatures on the notice of withdrawal must be guaranteed by an
Eligible Institution. Withdrawals of tenders of Shares may not be rescinded, and
any Shares properly withdrawn will thereafter be deemed not validly tendered for
any purposes of the Offer. However, withdrawn Shares may be retendered by
                                       29
<PAGE>   32
 
again following one of the procedures described in "Procedure for Tendering
Shares" at any time prior to the Expiration Date.
 
     All questions as to the form and validity (including time of receipt) of
notices of withdrawal will be determined by Parent in its sole discretion, which
determination will be final and binding. None of Parent, the Depositary, the
Information Agent, or any other person will be under any duty to give
notification of any defects or irregularities in any notice of withdrawal or
incur any liability for failure to give any such notification.
 
ACCEPTANCE FOR PAYMENT AND PAYMENT FOR SHARES
 
     Upon the terms and subject to the conditions of the Offer (including, if
the Offer is extended or amended, the terms and conditions of any such extension
or amendment), Parent will accept for payment and will pay for all Shares
validly tendered prior to the Expiration Date and not properly withdrawn in
accordance with the procedures set forth in "Withdrawal Rights" as soon as
practicable after the later of (1) the Expiration Date and (2) the satisfaction
or waiver of the conditions set forth in "Certain Conditions of the Offer." For
a description of Parent's right or obligation to terminate the Offer and not
accept for payment or pay for Shares or to delay acceptance for payment or
payment for Shares, see "Certain Conditions of the Offer."
 
     In all cases, payment for Shares accepted for payment pursuant to the Offer
will be made only after timely receipt by the Depositary of (1) certificates for
such Shares (or timely Book-Entry Confirmation of a transfer of such Shares as
described in "Procedure for Tendering Shares"), (2) a Letter of Transmittal (or
facsimile thereof), properly completed and duly executed, with any required
signature guarantees (or, in the case of a book-entry transfer, an Agent's
message), and (3) any other documents required by the Letter of Transmittal.
 
     For purposes of the Offer, Parent will be deemed to have accepted for
payment, and thereby purchased, Shares properly tendered to Parent and not
withdrawn as, if and when Parent gives oral or written notice to the Depositary
of Parent's acceptance for payment of such Shares. Payment for Shares accepted
for payment pursuant to the Offer will be made by deposit of the purchase price
therefor with the Depositary, which will act as agent for tendering stockholders
for the purpose of receiving payment from Parent and transmitting payment to
tendering stockholders. UNDER NO CIRCUMSTANCES WILL INTEREST BE PAID ON THE
PURCHASE PRICE OF THE SHARES TO BE PAID BY PARENT, REGARDLESS OF ANY EXTENSION
OF THE OFFER OR ANY DELAY IN MAKING SUCH PAYMENT.
 
     If Parent is delayed in its acceptance for payment of or payment for Shares
or is unable to accept for payment or pay for Shares pursuant to the Offer for
any reason, then, without prejudice to Parent's rights under the Offer (but
subject to compliance with Rule 14e-1(c) under the Exchange Act, which requires
that a tender offeror pay the consideration offered or return the tendered
securities promptly after the termination or withdrawal of a tender offer), the
Depositary may, nevertheless, on behalf of Parent, retain tendered Shares. Any
such Shares may not be withdrawn except to the extent tendering stockholders are
entitled to exercise, and duly exercise, withdrawal rights as described in
"Withdrawal Rights."
 
     If any tendered Shares are not purchased pursuant to the Offer because of
an invalid tender or otherwise, certificates for any such Shares will be
returned, without expense to the tendering stockholder (or, in the case of
Shares delivered by book-entry transfer of such Shares into the Depositary's
account at the Book-Entry Transfer Facility pursuant to the procedure set forth
in "Procedure for Tendering Shares," such Shares will be credited to an account
maintained at the Book-Entry Transfer Facility), as promptly as practicable
after the expiration or termination of the Offer.
 
     Parent reserves the right to transfer or assign, in whole or from time to
time in part, to one or more of its direct or indirect wholly-owned
subsidiaries, the right to purchase Shares tendered pursuant to the Offer, but
any such transfer or assignment will not relieve Parent of its obligations under
the Offer and will in no way prejudice the rights of tendering stockholders to
receive payment for Shares validly tendered and accepted for payment pursuant to
the Offer.
 
                                       30
<PAGE>   33
 
PRICE RANGE OF THE SHARES; DIVIDENDS
 
     The Shares are listed and traded on the Nasdaq National Market under the
symbol "TRED." The following table sets forth, for each of the periods
indicated, the high and low sales prices, the dividends per Share and the
average daily trading volume as published in financial sources.
 
<TABLE>
<CAPTION>
                                                            HIGH      LOW     DIVIDENDS   VOLUME
                                                           -------   ------   ---------   ------
<S>                                                        <C>       <C>      <C>         <C>
1997
  First Quarter.........................................   $10.500   $8.625     $.04      2,636
  Second Quarter........................................   $10.500   $8.125     $.04      4,550
  Third Quarter.........................................   $12.750   $9.375     $.04      7,579
  Fourth Quarter........................................   $13.500   $9.125     $ --      3,784
1998
  First Quarter.........................................   $10.000   $7.000     $ --      2,886
  Second Quarter........................................   $10.125   $7.625     $ --      1,821
  Third Quarter.........................................   $ 9.375   $5.375     $ --      5,852
  Fourth Quarter........................................   $ 7.500   $4.750     $ --      4,823
1999
  First Quarter.........................................   $ 9.500   $6.063     $ --      2,580
     (through March 19, 1999)
</TABLE>
 
     On January 21, 1999, the last full day of trading before the public
announcement of the Proposal, the reported closing sales price of the Shares was
$6.50 per Share. On March 15, 1999, the last full day of trading before the
public announcement of the execution of the Merger Agreement, the reported
closing sales price of the Shares was $8.6875 per Share. On March 19, 1999, the
reported closing sales price of the Shares was $8.875 per Share. STOCKHOLDERS
ARE URGED TO OBTAIN CURRENT MARKET QUOTATIONS FOR THE SHARES.
 
     In October 1997, the Board of Directors of the Company suspended the
Company's regular quarterly dividend to provide additional funds for working
capital and growth opportunities.
 
     Pursuant to the Merger Agreement, the Company has agreed not to declare,
set aside, make or pay any dividend or distribution on the Shares.
 
CERTAIN INFORMATION CONCERNING PARENT AND NEWCO
 
     General. Parent, a Delaware corporation, is a diversified holding company
that provides national and regional transportation of general commodities
through its motor carrier subsidiaries, and domestic and international
intermodal freight services, utilizing a variety of transportation modes
including over-the-road, rail, ocean and air, through its intermodal
subsidiaries. The principal offices of Parent are located at 3801 Old Greenwood
Road, Fort Smith, Arkansas 72903.
 
     Selected Financial Information. Set forth below is certain selected
consolidated financial information with respect to Parent excerpted or derived
from the information contained in Parent's Annual Report on Form 10-K for the
year ended December 31, 1998 (the "Parent 10-K"), which is incorporated by
reference herein. More comprehensive financial information is included in the
Parent 10-K and other documents filed by Parent with the Commission, and the
following summary is qualified in its entirety by reference to the Parent 10-K
and such other documents and all the financial information (including any
related notes) contained therein. The Parent 10-K and other documents should be
available for inspection and copies thereof should be obtainable in the manner
set forth below under "Available Information."
 
                                       31
<PAGE>   34
 
                           ARKANSAS BEST CORPORATION
 
                  SELECTED CONSOLIDATED FINANCIAL INFORMATION
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED DECEMBER 31,
                                                           ------------------------------------
                                                              1998         1997         1996
                                                           ----------   ----------   ----------
<S>                                                        <C>          <C>          <C>
STATEMENT OF EARNINGS DATA:
  Operating revenues.....................................  $1,651,453   $1,643,678   $1,604,335
  Operating income (loss)................................      66,410       62,908      (18,008)
  Minority interest in subsidiary........................       3,257       (1,359)      (1,768)
  Other expenses, net....................................       3,259        8,916        5,906
  Gain on sale of Cardinal Freight Carriers, Inc.........          --        8,985           --
  Settlement of Litigation...............................       9,124           --           --
  Interest expense.......................................      18,438       23,978       30,843
  Income (loss) from continuing operations before income
     taxes...............................................      50,580       40,358      (52,989)
  Provision (credit) for income taxes....................      21,905       19,389      (18,782)
  Income (loss) from continuing operations...............      28,675       20,969      (34,207)
  Loss from discontinued operations, net of tax..........          --       (5,622)      (2,396)
  Net income (loss)......................................  $   28,675   $   15,347   $  (36,603)
  Income (loss) per share from continuing operations
     (diluted)...........................................  $     1.21   $     0.84   $    (1.98)
  Net income (loss) per common share (diluted)...........  $     1.21   $     0.56   $    (2.10)
  Cash dividends paid per common share...................          --           --   $     0.01
</TABLE>
 
<TABLE>
<CAPTION>
                                                                    AS OF DECEMBER 31,
                                                           ------------------------------------
                                                              1998         1997         1996
                                                           ----------   ----------   ----------
<S>                                                        <C>          <C>          <C>
BALANCE SHEET DATA:
  Total assets...........................................  $  710,604   $  698,339   $  828,181
  Current portion of long-term debt......................      17,504       16,484       37,197
  Long-term debt (including capital leases and excluding
     current portion)....................................     196,079      202,604      317,874
</TABLE>
 
                                       32
<PAGE>   35
 
     Newco. Newco, a Delaware corporation and a wholly owned subsidiary of
Parent, was organized to merge with and into the Company upon consummation of
the Merger and has not conducted any unrelated activities since its
organization. The principal offices of Newco are located at 3801 Old Greenwood
Road, Fort Smith, Arkansas 72903. All outstanding shares of capital stock of
Newco are owned by Parent.
 
     Miscellaneous. Except as described in this Offer to Purchase, neither
Parent nor Newco (together, the "Corporate Entities") or, to the best knowledge
of the Corporate Entities, any of the persons listed in ANNEX C or any associate
or majority-owned subsidiary of the Corporate Entities or any of the persons so
listed, beneficially owns any equity security of the Company, and none of the
Corporate Entities, any of the other persons referred to above, or any of the
respective directors, executive officers or subsidiaries of any of the
foregoing, has effected any transaction in any equity security of the Company
during the past 60 days.
 
     Except as described in this Offer to Purchase, (i) there have not been any
contacts, transactions or negotiations between the Corporate Entities, any of
their respective subsidiaries or, to the best knowledge of the Corporate
Entities, any of the persons listed in ANNEX C, on the one hand, and the Company
or any of its directors, officers or affiliates, on the other hand, that are
required to be disclosed pursuant to the rules and regulations of the Commission
and (ii) none of the Corporate Entities or, to the best knowledge of the
Corporate Entities, any of the persons listed in ANNEX C has any contract,
arrangement, understanding or relationship with any person with respect to any
securities of the Company.
 
     During the last five years none of the Corporate Entities nor, to the best
knowledge of the Corporate Entities, any of the persons listed in ANNEX C (i)
has been convicted in a criminal proceeding (excluding traffic violations and
similar misdemeanors) or (ii) was a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is subject to a judgment, decree of final order enjoining future
violations of, or prohibiting activities subject to, Federal or state securities
laws or finding any violation of such laws. The name, business address, present
principal occupation or employment, five-year employment history and citizenship
of each of the directors and executive officers of Parent and Newco are set
forth in ANNEX C.
 
CERTAIN INFORMATION CONCERNING THE COMPANY
 
     General. The Company is a Delaware corporation with its principal executive
offices at 1101 South 21st Street, Fort Smith, Arkansas 72901. The Company is
the nation's largest independent tire retreader for the trucking industry and
the fourth largest commercial truck tire dealer.
 
     Selected Financial Information. Set forth below is certain selected
financial information with respect to the Company excerpted or derived from the
information contained in the Company's Annual Report on Form 10-K for the year
ended December 31, 1998 (the "Company Form 10-K"), which is incorporated by
reference herein. More comprehensive financial information is included in the
Company Form 10-K and other documents filed by the Company with the Commission,
and the following summary is qualified in its entirety by reference to the
Company Form 10-K and such other documents and all the financial information
(including any related notes) contained therein. The Company Form 10-K and other
documents should be available for inspection and copies thereof should be
obtainable in the manner set forth below under "Available Information."
 
                                       33
<PAGE>   36
 
                                 TREADCO, INC.
 
                         SELECTED FINANCIAL INFORMATION
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                     YEAR ENDED DECEMBER 31,
                                    ----------------------------------------------------------
                                      1998         1997         1996         1995       1994
                                    --------     --------     --------     --------   --------
<S>                                 <C>          <C>          <C>          <C>        <C>
STATEMENT OF EARNINGS DATA:
  Revenues........................  $181,293     $161,276     $144,154     $147,906   $140,678
  Costs and expenses..............   178,801      163,785      149,337      142,920    129,162
  Operating income (loss).........     2,492       (2,509)      (5,183)       4,986     11,516
  Interest expense................    (1,086)      (1,213)        (873)        (461)      (236)
  Amortization expense............      (636)        (723)        (723)        (723)      (738)
  Other income....................       579          567        1,427          300        232
  Settlement of litigation........     9,124(1)        --           --           --         --
  Income (loss) before income
     taxes........................    10,473       (3,878)      (5,352)       4,102     10,774
  Provision (credit) for income
     taxes........................     4,092       (1,374)      (2,093)       1,711      4,265
  Net income (loss)...............  $  6,381(1)  $ (2,504)    $ (3,259)    $  2,391   $  6,509
  Net income (loss) per share:
     Basic........................  $   1.26(1)  $   (.49)    $   (.64)    $    .47   $   1.29
     Diluted......................  $   1.25(1)  $   (.49)    $   (.64)    $    .47   $   1.28
  Average shares outstanding:
     Basic........................     5,072        5,072        5,072        5,072      5,055
     Diluted......................     5,092        5,072        5,072        5,074      5,066
  Cash dividends paid per share...  $     --     $    .12     $    .16     $    .16   $    .16
</TABLE>
 
<TABLE>
<CAPTION>
                                                        AS OF DECEMBER 31,
                                    ----------------------------------------------------------
                                      1998         1997         1996         1995       1994
                                    --------     --------     --------     --------   --------
<S>                                 <C>          <C>          <C>          <C>        <C>
BALANCE SHEET DATA:
  Working capital.................  $ 23,673     $ 27,273     $ 34,043     $ 44,878   $ 37,364
  Total assets....................   107,370      100,458      105,416       93,035     89,583
  Current portion of long-term
     debt.........................     2,545        2,305        1,645          863        123
  Long-term debt (less current
     portion).....................     6,159       12,884       19,610       10,000      3,863
  Stockholders' equity............    65,216       58,835       61,948       66,018     64,438
</TABLE>
 
<TABLE>
<CAPTION>
                                                        AS OF DECEMBER 31,
                                    ----------------------------------------------------------
                                      1998         1997         1996         1995       1994
                                    --------     --------     --------     --------   --------
<S>                                 <C>          <C>          <C>          <C>        <C>
OTHER DATA:
  Ratio of earnings to fixed
     charges......................     9.5:1        -- (2)       -- (2)       8.3:1     33.5:1
  Book value per share............  $  12.86     $  11.60     $  12.21     $  13.02   $  12.74
</TABLE>
 
- ---------------
 
(1) Settlement of the Bandag arbitration resulted in a one-time cash payment of
    $9.995 million to the Company and in after-tax income of approximately $5.4
    million or $1.06 per Share.
 
(2) Earnings were inadequate to cover fixed charges. The deficiency was $3.878
    million for 1997 and $5.352 million for 1996.
 
                                       34
<PAGE>   37
 
     Miscellaneous. Except as described in this Offer to Purchase, neither the
Company or, to the best knowledge of the Company, any of the persons listed in
ANNEX D or any associate or majority-owned subsidiary of the Company or any of
the persons so listed, beneficially owns any equity security of the Company, and
none of the Company, any of the other persons referred to above, or any of the
respective directors, executive officers or subsidiaries of any of the
foregoing, has effected any transaction in any equity security of the Company
during the past 60 days.
 
     Except as described in this Offer to Purchase, (i) there have not been any
contracts, transactions or negotiations between the Company and, to the best
knowledge of the Company, any of the persons listed in ANNEX D that are required
to be disclosed pursuant to the rules and regulations of the Commission and (ii)
neither the Company nor, to the best knowledge of the Company, any of the
persons listed in ANNEX D has any contract, arrangement, understanding or
relationship with any person with respect to any securities of the Company.
 
     During the last five years neither the Company nor, to the best knowledge
of the Company, any of the persons listed in ANNEX D (i) has been convicted in a
criminal proceeding (excluding traffic violations and similar misdemeanors) or
(ii) was a party to a civil proceeding of a judicial or administrative body of
competent jurisdiction and as a result of such proceeding was or is subject to a
judgment, decree of final order enjoining future violations of, or prohibiting
activities subject to, Federal or state securities laws or finding any violation
of such laws. The name, business address, present principal occupation or
employment, five-year employment history and citizenship of each of the
directors and executive officers of the Company are set forth in ANNEX D.
 
AVAILABLE INFORMATION
 
     Parent and the Company are each subject to the reporting requirements of
the Exchange Act and, in accordance therewith, are required to file reports and
other information with the Commission relating to their respective businesses,
financial condition and other matters. Information as of particular dates
concerning each of Parent's and the Company's directors and officers, their
remuneration, the principal holders of Parent's and the Company's securities and
any material interest of such persons in transactions with Parent or the Company
is required to be disclosed in the respective proxy statements distributed to
each of Parent's and the Company's stockholders and filed with the Commission.
Such reports, proxy statements and other information should be available for
inspection at the public reference facilities of the Commission located at 450
Fifth Street, N.W., Washington, D.C. 20549, and at the regional offices of the
Commission located in the Northwestern Atrium Center, 500 West Madison Street
(Suite 1400), Chicago, Illinois 6661 and Seven World Trade Center, 13th Floor,
New York, New York 10048. Copies should be obtainable, by mail, upon payment of
the Commission's customary charges, by writing to the Commission's principal
office at 450 Fifth Street, N.W., Washington, D.C. 20549, and can be obtained
electronically on the Commission's website at http://www.sec.gov. Such
information should also be on file at the Nasdaq National Market, 1735 K Street,
N.W., Washington, D.C. 20006. After consummation of the Merger, the Company will
no longer file reports, proxy statements or other information with the
Commission. See "THE TENDER OFFER -- Certain Effects of the Offer and Merger."
 
SOURCE AND AMOUNT OF FUNDS
 
     The total amount of funds required by Parent to acquire all of the
outstanding Shares pursuant to the Offer, consummate the Merger and to pay fees
and expenses related to the Offer and the Merger is estimated to be
approximately $24.3 million. See "Fees and Expenses." Parent expects to obtain
the funds required to consummate the Offer and Merger through the use of a
combination of (i) cash on hand, working capital and other internally-generated
funds and (ii) borrowings under a $250 million existing bank credit facility.
The Offer is not conditioned upon Parent receiving any financing. See "Certain
Conditions of the Offer."
 
     Pursuant to a $250 million Credit Agreement dated June 12, 1998, among
Parent, Societe Generale, Southwest Agency, as Administrative Agent, and Bank of
America National Trust Savings Association and Wells Fargo Bank (Texas), N.A.,
as Co-Documentation Agents and the other banks that are parties thereto,
 
                                       35
<PAGE>   38
 
as amended (the "Parent Credit Agreement"), Parent may borrow up to an aggregate
of $250 million for general corporate purposes on a revolving basis. As of
December 31, 1998, Parent had $92.6 million in borrowing availability under the
Parent Credit Agreement. The Parent Credit Agreement expires June 12, 2003, and
loans under the Parent Credit Agreement currently bear interest at LIBOR plus
 .625%. Loans under the Parent Credit Agreement are secured by substantially all
of Parent's accounts receivable and revenue equipment.
 
     It is anticipated that the indebtedness incurred by Parent in connection
with the Offer and the Merger will be repaid from funds generated internally by
Parent and its subsidiaries (including, after the Merger, if consummated, funds
generated by the Surviving Corporation) and through other sources which may
include the proceeds of future bank financings, the public or private sale of
debt or equity securities or a combination thereof. No decisions have been made,
however, concerning the method Parent will employ to repay such indebtedness.
Such decisions, when made, will be based on Parent's review from time to time of
the advisability of particular actions, as well as on prevailing interest rates
and financial and other economic conditions.
 
DIVIDENDS AND DISTRIBUTIONS
 
     If on or after the date of the Merger Agreement, the Company should (i)
split, combine or otherwise change the Shares or its capitalization, (ii) issue
or sell any additional securities of the Company or otherwise cause an increase
in the number of outstanding securities of the Company (except for Shares
issuable upon the exercise of employee stock options outstanding on the date of
the Merger Agreement) or (iii) acquire currently outstanding Shares or otherwise
cause a reduction in the number of outstanding Shares, then, without prejudice
to Parent's rights set forth in "Terms of the Offer" and "Certain Conditions of
the Offer," Parent in its sole discretion, subject to the terms of the Merger
Agreement, may make such adjustments as it deems appropriate to the purchase
price and other terms of the Offer.
 
     If, on or after the date of the Merger Agreement, the Company should
declare or pay any dividend on the Shares or make any distribution (including,
without limitation, cash dividends, the issuance of additional Shares pursuant
to a stock dividend or stock split, the issuance of other securities or the
issuance of rights for the purchase of any securities) with respect to the
Shares that is payable or distributable to stockholders of record on a date
prior to the transfer to the name of Parent or its nominee or transferee on the
Company's stock transfer records of the Shares purchased pursuant to the Offer,
then, without prejudice to Parent's rights set forth in "Terms of the Offer" and
"Certain Conditions of the Offer," any such dividend, distribution or right to
be received by the tendering stockholders will be received and held by the
tendering stockholder at the Depositary for the account of Parent, accompanied
by appropriate documentation of transfer. Pending such remittance and subject to
applicable law, Parent will be entitled to all rights and privileges as owner of
any such dividend, distribution or right and may withhold the entire purchase
price or deduct from the purchase price the amount or value thereof, as
determined by Parent in its sole discretion.
 
     Pursuant to the terms of the Merger Agreement, the Company is prohibited
from taking any of the actions described in the two preceding paragraphs and
nothing herein shall constitute a waiver by Parent of any of its rights under
the Merger Agreement or a limitation of remedies available to Parent for any
breach of the Merger Agreement, including termination thereof.
 
CERTAIN CONDITIONS OF THE OFFER
 
     Notwithstanding any other provisions of the Offer, Parent shall not be
required to accept for payment or pay for and may delay the acceptance for
payment of, or the payment for, any Shares, and may terminate the Offer and not
accept for payment or pay for any Shares, if (i) immediately prior to the
expiration of the Offer (as it may be extended in accordance with the Offer),
the Minimum Condition shall not have been satisfied, (ii) any applicable waiting
period under the HSR Act shall not have expired or been terminated prior to the
expiration of the Offer; (iii) any required consent, permit or authorization
from any regulatory or governmen-
 
                                       36
<PAGE>   39
 
tal authority has not been obtained; or (iv) at any time prior to the acceptance
for payment of Shares, Parent makes a determination (which shall be made in good
faith) that any of the following conditions exist:
 
          (a) any of the representations or warranties of the Company contained
     in the Merger Agreement is not true and correct at and as of any date on or
     prior to the Expiration Date as if made at and as of such time, except for
     (i) failures to be true and correct as would not have a Company Material
     Adverse Effect or were known to Parent as of the date of the Merger
     Agreement; and (ii) failures to comply as are capable of being and are
     cured prior to the earlier of (A) 10 days after written notice from Parent
     to the Company of such failure or (B) two business days prior to the
     Expiration Date;
 
          (b) the Company has failed to comply with any of its obligations under
     the Merger Agreement, except for (i) failures to so comply as would not
     have a Company Material Adverse Effect or were known to Parent as of the
     date of the Merger Agreement; and (ii) failures to comply as are capable of
     being and are cured prior to the earlier of (A) 10 days after written
     notice from Parent to the Company of such failure or (B) two business days
     prior to the Expiration Date;
 
          (c) the Special Committee or the Board has withdrawn or modified in
     any respect adverse to Parent its recommendation of the Offer or taken any
     position inconsistent with such recommendation;
 
          (d) the Merger Agreement has been terminated in accordance with its
     terms;
 
          (e) the Company has reached an agreement with Parent that the Offer or
     the Merger be terminated or amended;
 
          (f) any state, federal, or foreign government, or governmental
     authority has taken any action, or proposed, sought, promulgated, or
     enacted, or any state, federal, or foreign government or governmental
     authority or court has entered, enforced, or deemed applicable to the Offer
     or the Merger, any statute, rule, regulation, judgment, order, or
     injunction that would (i) make the acceptance for payment of, the payment
     for, or the purchase of, some or all of the Shares illegal or otherwise
     restrict, materially delay, prohibit consummation of, or make materially
     more costly, the Offer or the Merger, (ii) result in a material delay in or
     restrict the ability of Parent, or render Parent unable, to accept for
     payment, pay for or purchase some or all of the Shares in the Offer, (iii)
     require the divestiture by Parent, Newco, or the Company or any of their
     respective subsidiaries or affiliates of all or any material portion of the
     business, assets, or property of any of them or any Shares, or impose any
     material limitation on the ability of any of them to conduct their business
     and own such assets, properties, and Shares, (iv) impose material
     limitations on the ability of Parent to hold or to exercise effectively all
     rights of ownership of the Shares, including the right to vote any Shares
     on all matters properly presented to the stockholders of the Company, or
     (v) impose any limitations on the ability of Parent, Newco, or any of their
     respective subsidiaries or affiliates effectively to control in any
     material respect the business or operations of the Company, Parent, Newco,
     or any of their respective subsidiaries or affiliates;
 
          (g) any change (or any condition, event or development involving a
     prospective change) has occurred or been threatened in the business,
     properties, assets, liabilities, capitalization, stockholders' equity,
     financial condition, operations, licenses or franchises, results of
     operations, or prospects of the Company, that would have a Company Material
     Adverse Effect;
 
          (h) there has occurred (i) any general suspension of trading in, or
     limitation on prices for, securities on any national securities exchange or
     in the over-the-counter market or quotations for shares traded thereon as
     reported by the Nasdaq or otherwise, (ii) a declaration of a banking
     moratorium or any suspension of payments in respect of banks in the United
     States (whether or not mandatory), (iii) any limitation (whether or not
     mandatory) by any governmental authority on the extension of credit by
     banks or other financial institutions, (iv) after the date of the Merger
     Agreement, an aggregate decline of at least 25% in the Dow Jones Industrial
     Average or Russell 2000 Index or a decline in either such index of 12 1/2%
     in any 24-hour period, or (v) in the case of any of the occurrences
     referred to in clauses (i) through (iv) existing at the time of the
     commencement of the Offer, in the reasonable judgment of Parent, a material
     acceleration or worsening thereof; or
 
                                       37
<PAGE>   40
 
          (i) any approval, permit, authorization, consent, or waiting period of
     any domestic or foreign, governmental, administrative, or regulatory entity
     (federal, state, local, provincial or otherwise) has not been obtained or
     satisfied on terms satisfactory to Parent in its reasonable discretion and
     the failure to obtain such consent, approval or authorization would have a
     Parent or Company Material Adverse Effect;
 
that, in the good faith judgment of Parent and regardless of the circumstances
(including any action or inaction by Parent, or any of its affiliates) giving
rise to any such condition, makes it inadvisable to proceed with the Offer or
with such acceptance for payment of, or payment for, Shares or to proceed with
the Merger.
 
     "Company Material Adverse Effect" means any change or effect that,
individually or when taken together with all such other changes or effects,
would be materially adverse to the condition (financial or other), business,
operations, properties, assets, liabilities, prospects, or results of operations
of the Company.
 
     "Parent Material Adverse Effect" means any change or effect that,
individually or when taken together with all such other changes or effects,
would be materially adverse to the condition (financial or other), business,
operations, properties, assets, liabilities, prospects, or results of operations
of Parent and its subsidiaries taken as a whole.
 
CERTAIN LEGAL MATTERS; REGULATORY MATTERS
 
     Neither Parent nor Newco is aware of any license or regulatory permit that
appears to be material to the business of the Company that might be adversely
affected by Parent's acquisition of Shares as contemplated herein or of any
approval or other action, except as otherwise described herein, by any
governmental entity that would be required for the acquisition or ownership of
Shares by Parent as contemplated herein. Should any such approval or other
action be required, Parent and Newco currently contemplate that such approval or
other action will be sought. While, except as otherwise expressly described
herein, Parent does not presently intend to delay the acceptance for payment of
or payment for Shares tendered pursuant to the Offer pending the outcome of any
such matter, there can be no assurance that any such approval or other action,
if needed, would be obtained or would be obtained without substantial conditions
or that failure to obtain any such approval or other action might not result in
consequences adverse to the Company's business or that certain parts of the
Company's business might not have to be disposed of if such approvals were not
obtained or such other actions were not taken. Because of the failure of such
approvals or other actions or because of conditions to be imposed in connection
with such approvals or other actions, Parent could decline to accept for payment
or pay for any Shares. See "Certain Conditions of the Offer."
 
     State Takeover Laws. A number of states throughout the United States have
enacted takeover statutes that purport, in varying degrees, to be applicable to
attempts to acquire securities of corporations that are incorporated or have
assets, stockholders, executive offices or places of business in such states. In
Edgar v. MITE Corp., the Supreme Court of the United States held that the
Illinois Business Takeover Act, which involved state securities laws that made
the takeover of certain corporations more difficult, imposed a substantial
burden on interstate commerce and therefore was unconstitutional. In CTS Corp.
v. Dynamics Corp. of America, however, the Supreme Court of the United States
held that a state may, as a matter of corporate law and, in particular, those
laws concerning corporate governance, constitutionally disqualify a potential
acquiror from voting on the affairs of a target corporation without prior
approval of the remaining stockholders, provided that such laws were applicable
only under certain conditions.
 
     Section 203 of the DGCL limits the ability of a Delaware corporation to
engage in business combinations with "interested stockholders" (defined as any
beneficial owner of 15% or more of the outstanding voting stock of the
corporation) unless, among other things, the corporation's board of directors
has given its prior approval to either the business combination or the
transaction which resulted in the stockholder becoming an "interested
stockholder." In accordance with the DGCL, the Company's certificate of
incorporation specifically exempts Parent from being deemed an "interested
stockholder" and, therefore, Section 203 of DGCL is inapplicable to the Merger.
 
     Parent and Newco do not believe that any state takeover statutes purport to
apply to the Offer or the Merger. Neither Parent nor Newco has currently
complied with any state takeover statute or regulation.
                                       38
<PAGE>   41
 
Parent reserves the right to challenge the applicability or validity of any
state law purportedly applicable to the Offer or the Merger and nothing in this
Offer to Purchase or any action taken in connection with the Offer or the Merger
is intended as a waiver of such right. If it is asserted that any state takeover
statute is applicable to the Offer or the Merger and an appropriate court does
not determine that it is inapplicable or invalid as applied to the Offer or the
Merger, Parent might be required to file certain information with, or to receive
approvals from, the relevant state authorities, and Parent might be unable to
accept for payment or pay for Shares tendered pursuant to the Offer, or be
delayed in consummating the Offer or the Merger. In such case, Parent may not be
obliged to accept for payment or pay for any Shares tendered pursuant to the
Offer.
 
     Antitrust. Under the provisions of the HSR Act applicable to the Offer, the
purchase of Shares under the Offer may be consummated following the expiration
of a 15-calendar day waiting period following the filing by Parent of a
Notification and Report Form with respect to the Offer, unless Parent receives a
request for additional information or documentary material from the Antitrust
Division of the Department of Justice (the "Antitrust Division") or the Federal
Trade Commission (the "FTC") or unless early termination of the waiting period
is granted. Parent is in the process of making such filing. If, within the
initial 15-day waiting period, either the Antitrust Division or the FTC requests
additional information or material from Parent concerning the Offer, the waiting
period will be extended and would expire at 11:59 p.m., New York City time, on
the tenth calendar day after the date of substantial compliance by Parent with
such request. Only one extension of the waiting period pursuant to a request for
additional information is authorized by the HSR Act. Thereafter, such waiting
period may be extended only by court order or with the consent of Parent. In
practice, complying with a request for additional information or material can
take a significant amount of time. In addition, if the Antitrust Division or the
FTC raises substantive issues in connection with a proposed transaction, the
parties frequently engage in negotiations with the relevant governmental agency
concerning possible means of addressing those issues and may agree to delay
consummation of the transaction while such negotiations continue.
 
     The Merger would not require an additional filing under the HSR Act if
Parent owns 50% or more of the outstanding Shares at the time of the Merger or
if the Merger occurs within one year after the HSR Act waiting period applicable
to the Offer expires or is terminated.
 
     The FTC and the Antitrust Division frequently scrutinize the legality under
the antitrust laws of the transactions such as Parent's proposed acquisition of
the Company. At any time before or after Parent's purchase of Shares pursuant to
the Offer, the Antitrust Division or FTC could take such action under the
antitrust laws as it deems necessary or desirable in the public interest,
including seeking to enjoin the purchase of Shares pursuant to the Offer or the
consummation of the Merger or seeking the divestiture of Shares acquired by
Parent or the divestiture of substantial assets of Parent or its subsidiaries,
or the Company. Private parties may also bring legal action under the antitrust
laws under certain circumstances. There can be no assurance that a challenge to
the Offer on antitrust grounds will not be made or, if such a challenge is made,
of the results thereof.
 
FEES AND EXPENSES
 
     Morgan Stanley has provided certain financial advisory services to Parent
in connection with the Offer. See "SPECIAL FACTORS -- Background of the Offer
and the Merger." Morgan Stanley will receive customary compensation for its
services, be reimbursed its out-of-pocket expenses, and has been indemnified
against certain liabilities and expenses in connection therewith, including
certain liabilities under the federal securities laws.
 
     Parent has retained D.F. King & Co., Inc. to act as the Information Agent
and Harris Trust and Savings Bank to act as the Depositary in connection with
the Offer. The Information Agent and the Depositary each will receive reasonable
and customary compensation for their services, be reimbursed for certain
reasonable out-of-pocket expenses and be indemnified against certain liabilities
and expenses in connection therewith, including certain liabilities under the
federal securities laws.
 
     Parent will not pay any fees or commissions to any broker or dealer or
other person (other than the Information Agent) in connection with the
solicitation of tenders of Shares pursuant to the Offer. Brokers,
                                       39
<PAGE>   42
 
dealers, banks and trust companies will be reimbursed by Parent upon request for
customary mailing and handling expenses incurred by them in forwarding material
to their customers.
 
     Certain employees of the Company have assisted Parent with respect to the
Transaction, primarily by providing information concerning the Company for the
preparation of this Offer to Purchase to comply with the requirements under the
Exchange Act. No employee of the Company has, or will, receive any additional or
separate compensation for such services. Pursuant to resolution of the Board,
each Board member receives a fee of $500 for each committee meeting attended.
Each of the members of the Special Committee will receive an aggregate of $2,500
in meeting fees in connection with their services to date.
 
     The Merger Agreement provides that all expenses incurred in connection with
the Offer and the Merger will be paid by the party incurring such costs and
expenses. The following in an estimate of expenses to be incurred in connection
with the Offer and the Merger.
 
<TABLE>
<S>                                                            <C>
EXPENSES TO BE PAID BY PARENT AND NEWCO:
  Financial Advisory and Legal Fees and Expenses............   $350,000
  Printing and Mailing......................................   $ 75,000
  Filing Fees...............................................   $ 50,000
  Depositary Fees...........................................   $  7,500
  Information Agent Fees....................................   $  5,000
  Miscellaneous.............................................   $ 10,000
                                                               --------
          TOTAL.............................................   $497,500
                                                               ========
EXPENSES TO BE PAID BY THE COMPANY:
  Financial Advisory and Legal Fees and Expenses............   $275,000
  Printing and Mailing Fees.................................   $ 25,000
  Miscellaneous.............................................   $ 10,000
                                                               --------
          TOTAL.............................................   $310,000
                                                               ========
</TABLE>
 
MISCELLANEOUS
 
     The Offer is not being made to (nor will tenders be accepted from or on
behalf of) holders of Shares in any jurisdiction in which the making of the
Offer or the acceptance thereof would not be in compliance with the laws of such
jurisdiction. Parent is not aware of any jurisdiction in which the making of the
Offer or the tender of Shares in connection therewith would not be in compliance
with the laws of such jurisdiction. To the extent Parent becomes aware of any
state law that would limit the class of offerees in the Offer, Parent will amend
the Offer and, depending on the timing of such amendment, if any, will extend
the Offer to provide adequate dissemination of such information to holders of
Shares prior to the expiration of the Offer. In any jurisdiction the securities,
blue sky or other laws of which require the Offer to be made by a licensed
broker or dealer, the Offer is being made on behalf of Parent by one or more
registered brokers or dealers licensed under the laws of such jurisdiction.
 
     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION ON BEHALF OF PARENT NOT CONTAINED HEREIN OR IN THE LETTER OF
TRANSMITTAL AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED.
 
                                       40
<PAGE>   43
 
     Parent has filed with the Commission Schedules 13E-3 and 14D-1 pursuant to
Rules 13e-3 and 14d-3 and under the Exchange Act, furnishing certain additional
information with respect to the Offer. In addition, the Company has filed with
the Commission a Schedule 14D-9 pursuant to Rule 14d-9 under the Exchange Act,
furnishing certain additional related information. Such Schedules and any
amendments thereto, including exhibits, should be available for inspection and
copies should be obtainable in the manner set forth in "Available Information"
(except that they will not be available at the regional offices of the
Commission).
 
                                            ARKANSAS BEST CORPORATION
 
                                       41
<PAGE>   44
 
                                                                         ANNEX A
                                 STEPHENS INC.
 
                                 March 15, 1999
The Special Committee of the
Board of Directors of
TREADCO, INC.
1101 South 21st Street
Fort Smith, AR 72901
 
Gentlemen:
 
     We have acted as your financial advisor in connection with the proposed
merger of Treadco, Inc. (the "Company") with Treadco Acquisition Corp., a wholly
owned subsidiary of Arkansas Best Corporation, Inc. (the "Transaction"). This
Transaction is expected to take the form of an all cash tender offer, followed
by a merger of Treadco Acquisition Corp. and the Company. The terms and
conditions of the Transaction are more fully set forth in the definitive merger
agreement.
 
     You have requested our opinion as to the fairness to the disinterested
stockholders of the Company from a financial point of view of the consideration
to be received by such stockholders in the Transaction. For purposes of the
opinion, the term "disinterested shareholders" means holders of the Company's
one class of publicly-traded common stock other than (1) directors, officers and
employees of the Company, (2) any holder of 10% percent or more of the
outstanding shares of such class, and (3) ABC or any affiliates thereof. In
connection with rendering our opinion we have:
 
          (i) analyzed certain publicly available financial statements and
     reports regarding the Company;
 
          (ii) analyzed certain internal financial statements and other
     financial and operating data (including financial projections) concerning
     the Company prepared by management of the Company;
 
          (iii) reviewed the reported prices and trading activity for the Common
     stock;
 
          (iv) compared the financial performance of the Company and the prices
     and trading activity of the Common Stock with that of certain other
     comparable publicly-traded companies and their securities;
 
          (v) reviewed the financial terms, to the extent publicly available, of
     certain comparable transactions;
 
          (vi) reviewed the definitive merger agreement and related documents;
 
          (vii) discussed with management of the Company and Arkansas Best
     Corporation ("the Parent") the operations of and future business prospects
     for the Company;
 
          (viii) assisted in your deliberations regarding the material terms of
     the Transaction, and
 
          (ix) performed such other analyses and provided such other services as
     we have deemed appropriate.
 
     We have relied on the accuracy and completeness of the information and
financial data provided to us by the Company and Parent, and our opinion is
based upon such information. We have inquired into the reliability of such
information and financial data only to the limited extent necessary to provide a
reasonable basis for our opinion, recognizing that we are rendering only an
informed opinion and not an appraisal or certification of value. With respect to
financial forecasts and other information provided to or otherwise reviewed by
or discussed with us, the management of the Company has advised us that such
forecasts and
 
                                       A-1
<PAGE>   45
March 15, 1999
Page 2
 
other information were reasonably prepared on bases reflecting the best
currently available estimates and judgments of the management of the Company as
to the future financial performance of the Company.
 
     As part of our investment banking business, we regularly issue fairness
opinions and are continually engaged in the valuation of companies and their
securities in connection with business reorganizations, private placements,
negotiated underwritings, mergers and acquisitions and valuations for estate,
corporate and other purposes. In the ordinary course of business, Stephens Inc.
and its affiliates at any time may hold long or short positions, and may trade
or otherwise effect transactions as principal or for the accounts of customers,
in debt or equity securities or options on securities of the Company. Stephens
is receiving a fee, and reimbursement of its expenses, in connection with the
issuance of this fairness opinion and for its role as financial advisor to the
Company.
 
     Based on the foregoing and our general experience as investment bankers,
and subject to the qualifications stated herein, we are of the opinion on the
date hereof that the consideration to be received by the disinterested
shareholders of the Company in the Transaction is fair to them from a financial
point of view.
 
     This opinion and a summary discussion of our underlying analyses and role
as your financial advisor may be included in communications to the Company's
shareholders provided that we approve of such disclosures prior to publication.
 
                                            Very truly yours,

                                            /s/ STEPHENS INC.
 
                                            STEPHENS, INC.
 
                                       A-2
<PAGE>   46
 
                                                                         ANNEX B
 
                          AGREEMENT AND PLAN OF MERGER
 
                                  BY AND AMONG
                           ARKANSAS BEST CORPORATION,
 
                        TREADCO ACQUISITION CORPORATION,
 
                                      AND
 
                                 TREADCO, INC.
 
                                 MARCH 15, 1999
 
                                       B-1
<PAGE>   47
 
                          AGREEMENT AND PLAN OF MERGER
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                              PAGE
                                                                              ----
<S>       <C>   <C>                                                           <C>
RECITALS....................................................................    1
 
ARTICLE   I     The Tender Offer
          1.1   The Tender Offer............................................    1
          1.2   Company Actions.............................................    3
 
ARTICLE   II    The Merger
          2.1   The Merger..................................................    3
          2.2   Effective Time..............................................    3
          2.3   Effects of the Merger.......................................    4
          2.4   Certificate of Incorporation................................    4
          2.5   Bylaws......................................................    4
          2.6   Directors...................................................    4
          2.7   Officers....................................................    4
          2.8   Conversion of the Shares....................................    4
          2.9   Dissenting Shares...........................................    4
          2.10  Conversion of the Common Stock of Newco.....................    5
          2.11  Payment for Shares..........................................    5
          2.12  Closing.....................................................    6
 
ARTICLE   III   Representations and Warranties of the Company
          3.1   Organization and Qualification..............................    6
          3.2   Authorized Capital..........................................    6
          3.3   Corporate Authorization.....................................    6
          3.4   Approvals; No Violations....................................    7
          3.5   SEC Filings; Financial Statements...........................    7
          3.6   Absence of Undisclosed Liabilities..........................    7
          3.7   Finders and Investment Bankers..............................    7
 
ARTICLE   IV    Representations and Warranties of Parent and Newco
          4.1   Organization and Qualification..............................    8
          4.2   Corporate Authorization.....................................    8
          4.3   Approvals; No Violations....................................    8
          4.4   No Prior Activities.........................................    8
          4.5   Information Supplied........................................    9
          4.6   Financing...................................................    9
          4.7   Company Reports.............................................    9
          4.8   Company Compliance..........................................    9
 
ARTICLE   V     Covenants
          5.1   Conduct of Business of the Company..........................    9
          5.2   Proxy Statement.............................................   11
          5.3   Action of Stockholders of the Company; Voting and
                Disposition of the Shares...................................   11
          5.4   Additional Agreements.......................................   12
          5.5   Notification of Certain Matters.............................   12
          5.6   Access to Information.......................................   12
          5.7   Public Announcements........................................   13
          5.8   Officers' and Directors' Indemnification....................   13
          5.9   Employee Options; Performance Award Units...................   13
          5.10  Other Actions by the Company................................   14
</TABLE>
 
                                       (i)
<PAGE>   48
 
<TABLE>
<CAPTION>
                                                                              PAGE
                                                                              ----
<S>       <C>   <C>                                                           <C>
ARTICLE   VI    Conditions to Consummation of the Merger
          6.1   Stockholder Approval........................................   14
          6.2   No Injunction...............................................   14
          6.3   Offer.......................................................   14
          6.4   Governmental Consents.......................................   14
 
ARTICLE   VII   Termination; Amendment; Waiver
          7.1   Termination.................................................   14
          7.2   Effect of Termination.......................................   15
          7.3   Fees and Expenses...........................................   15
          7.4   Amendment...................................................   16
          7.5   Waiver......................................................   16
 
ARTICLE   VIII  Miscellaneous
          8.1   Survival of Representations, Warranties, and Agreements.....   16
          8.2   Brokerage Fees and Commissions..............................   16
          8.3   Entire Agreement; Assignment................................   16
          8.4   Severability................................................   17
          8.5   Notices.....................................................   17
          8.6   Governing Law...............................................   18
          8.7   Specific Performance........................................   18
          8.8   Other Potential Bidders.....................................   18
          8.9   Descriptive Headings; References............................   18
          8.10  Parties in Interest.........................................   18
          8.11  Beneficiaries...............................................   18
          8.12  Counterparts................................................   18
          8.13  Obligations.................................................   19
          8.14  Certain Definitions.........................................   19
</TABLE>
 
Annex A  Certain Conditions
 
Schedules
 
                                      (ii)
<PAGE>   49
 
                          AGREEMENT AND PLAN OF MERGER
 
     AGREEMENT AND PLAN OF MERGER (the "Agreement") dated as of March 15, 1999,
by and among ARKANSAS BEST CORPORATION, a Delaware corporation ("Parent"),
TREADCO ACQUISITION CORPORATION, a Delaware corporation and a wholly-owned
subsidiary of Parent ("Newco"), and TREADCO, INC., a Delaware corporation (the
"Company").
 
                                    RECITALS
 
     The Board of Directors of the Company (the "Board"), upon the
recommendation of a duly authorized special committee thereof (consisting of
independent directors) (the "Special Committee") and the Board of Directors of
Parent have unanimously determined that it is in the best interests of the
stockholders of their respective corporations for Parent to acquire all the
outstanding shares of common stock, par value $.01 per share, of the Company
(including the associated Rights (as defined in Section 1.1(a) of this
Agreement)) (collectively, the "Shares") other than those Shares owned by Parent
or any of its subsidiaries.
 
     The parties intend to effect such acquisition through a tender offer on the
terms described below, followed by a merger of Newco with and into the Company
on the terms described below (the "Merger").
 
     THEREFORE, in consideration of the foregoing, the mutual covenants
contained in this Agreement, and other good and valuable consideration, the
receipt and sufficiency of which all parties hereby acknowledge, the parties
agree as follows:
 
                                   ARTICLE I
 
                                THE TENDER OFFER
 
     1.1  The Tender Offer. (a) Provided that this Agreement has not been
terminated in accordance with Article VII and none of the events referred to in
Annex A (other than the events referred to in clauses (i) through (ii) of the
second paragraph of Annex A and paragraph clause (i) of Annex A) has occurred or
is existing, within five business days of the date of this Agreement, Parent
will commence a tender offer (the "Offer") subject to Rules 13e-3 and 14d-1 of
the Securities Exchange Act of 1934, as amended (the "Exchange Act") for all
outstanding Shares at a price of $9.00 per Share (the "Per Share Amount") net to
the seller in cash. Parent agrees to accept for payment all Shares validly
tendered pursuant to the Offer as soon as legally permissible, and to pay for
all such Shares as promptly as practicable, in each case upon the terms and
subject to the conditions of the Offer, as it may be revised as permitted by
this Agreement. The obligation of Parent to commence the Offer will be subject
only to the conditions set forth in Annex A, and the obligation of Parent to
accept for payment, purchase, and pay for the Shares tendered pursuant to the
Offer will be subject to such conditions and to the further condition that the
Shares validly tendered and not withdrawn prior to the expiration date of the
Offer when aggregated with the Shares currently owned by Parent, its
subsidiaries and affiliates (other than affiliates who are natural persons)
represent not less than 66 2/3% of the number of Shares then outstanding and
issuable on the exercise of the outstanding options (the "Minimum Condition").
Parent specifically reserves the right to extend the expiration date of the
Offer (unless, after April 30, 1999, all conditions to the Offer listed on Annex
A are fulfilled or waived by Parent and Newco), and to make any other changes in
the terms and conditions of the Offer (provided that, unless previously approved
by the Company (as recommended by the Special Committee) in writing, no change
may be made that decreases the price per Share payable in the Offer, that
changes the form of consideration to be paid in the Offer, that reduces the
maximum number of Shares to be purchased in the Offer, that waives or reduces,
in whole or in part, the Minimum Condition, that imposes conditions to the Offer
in addition to those set forth in Annex A, or that broadens the scope of such
conditions or amends any other material term of the Offer in a manner adverse to
the Company's stockholders (other than Parent). Notwithstanding the foregoing,
Parent (i) shall extend the Offer for any period required by any rule,
regulation or interpretation of the Securities and Exchange Commission (the
"SEC") or the staff thereof applicable to the Offer, and (ii) may, without the
consent of the Company, extend the Offer for an aggregate period of not more
than 10 business days beyond the latest applicable date that would otherwise be
permitted under clause (i) of this sentence if, as of such
                                        1
<PAGE>   50
 
date, all of the offer conditions set forth on Annex A are satisfied or waived
by Parent, but the number of Shares validly tendered and not withdrawn pursuant
to the Offer is less than 90% of the then outstanding Shares on a fully diluted
basis. The parties agree that the conditions set forth in Annex A are for the
sole benefit of Parent and may be asserted by Parent or may be waived by Parent,
in whole or in part, at any time and from time to time, in its sole discretion
other than the Minimum Condition which requires the written consent of the
Company (as recommended by the Special Committee). The failure by Parent at any
time to exercise any of the foregoing rights will not be deemed a waiver of any
such right, the waiver of any such right with respect to particular facts and
circumstances will not be deemed a waiver with respect to other facts or
circumstances, and each such right will be deemed an ongoing right that may be
asserted at any time and from time to time. The Per Share Amount will be paid
net to the seller in cash, less any required withholding taxes, on the terms and
subject to the conditions of the Offer. Parent and the Company agree that no
Shares held by the Company or by Parent or any of its subsidiaries will be
tendered in the Offer. The Company hereby consents to the Offer and represents
that: (a) the Special Committee at a meeting duly called and held (i) determined
at such time that the Offer and the Merger, taken together, are fair to the
Company and its stockholders and in the best interests of the holders of the
Shares (other than Parent, its subsidiaries and affiliates (other than those
affiliates who are natural persons)); and (ii) resolved at such time to
recommend acceptance of the Offer and approval and adoption of this Agreement,
the Merger, and the transactions contemplated by this Agreement to the Board,
(b) the Board at a meeting duly called and held (i) determined at such time that
the Offer and the Merger, taken together, are fair to the Company and its
stockholders and in the best interests of the holders of the Shares (other than
Parent, its subsidiaries and affiliates (other than those affiliates who are
natural persons)); (ii) resolved at such time to recommend acceptance of the
Offer and approval and adoption of this Agreement, the Merger, and the
transactions contemplated by this Agreement to the stockholders of the Company;
and (iii) has taken all necessary action with respect to the rights to purchase
shares of common stock, $.01 par value per share, of the Company at $60.00 per
share (the "Rights") issued under the Company's Rights Agreement, dated as of
September 1, 1991 between the Company and NCNB Texas National Bank (as amended,
the "Rights Agreement"), to provide that the Offer will not constitute an event
resulting in a "Distribution Date" (as such term is defined in the Rights
Agreement) and (c) Stephens Inc., the Special Committee's financial advisor (the
"Advisor"), has delivered to the Special Committee and the Board its opinion
that, subject to the limitations and qualifications set forth in such opinion,
the Per Share Amount is fair from a financial point of view to the holders of
the Shares (other than Parent).
 
     (b) As promptly as practicable on the date of the commencement of the
Offer, Parent will file with the SEC a Tender Offer Statement on Schedule 13E-3
and 14D-1 with respect to the Offer under the Exchange Act, which will (i)
reflect the execution and delivery of this Agreement; (ii) set forth the Offer
as provided for in this Agreement pursuant to an offer to purchase; and (iii)
contain or incorporate by reference a form of letter of transmittal. Parent
represents and agrees that the Tender Offer Statement on Schedule 13E-3 and
14D-1 and all other Offer Documents (as defined below) shall comply as to form
in all material respects with the Exchange Act, and the rules and regulations
promulgated thereunder, and that the Tender Offer Statement on Schedule 13E-3
and 14D-1 and all other Offer Documents, on the date first published,
disseminated, or mailed to the Company's stockholders, shall not contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein not
misleading. Parent agrees promptly to take all steps necessary to cause the
Tender Offer Statement on Schedule 13E-3 and 14D-1 and all other Offer Documents
to be corrected if and to the extent that such information shall become false or
misleading in any material respect, and Parent agrees to take all steps
necessary to amend or supplement the Tender Offer Statement on Schedule 13E-3
and 14D-1 and all other Offer Documents and to cause such documents as so
amended or supplemented to be filed with the SEC and to be disseminated to the
Company's stockholders, in each case as and to the extent required by the
federal securities laws. The Company, the Special Committee and its advisors
shall be given a reasonable opportunity to review the Tender Offer Statement on
Schedule 13E-3 and 14D-1, all other Offer Documents and all amendments and
supplements thereto prior to the filing with the SEC or dissemination to the
Company's stockholders.
 
                                        2
<PAGE>   51
 
     (c) Parent will promptly disseminate the offer to purchase referred to in
Section 1.1(b) (as amended pursuant to this Agreement, the "Offer to Purchase"
and, collectively with all other schedules and exhibits required to be filed
with the SEC, the "Offer Documents") to the holders of the Shares, reflecting
the terms set forth in this Agreement. The Offer Documents will contain the
recommendation of the Special Committee and the Board that the holders of the
Shares accept the Offer as described in Section 1.1(a) and may make reference to
the opinion of the Advisor referred to in Section 1.1(a) and include or
incorporate such opinion. The Company, with respect to written information
supplied by the Company specifically for use in the Offer Documents or based
upon information pertaining to the Company in the Company Reports (as defined in
Section 3.5), agrees promptly to inform Parent in the event that any such
information in the Offer Documents becomes false or misleading in any material
respect. Subject to Section 1.2(b), Parent agrees to take all steps to cause the
Offer Documents to be disseminated to the holders of Shares, as and to the
extent required by applicable law. Parent will promptly provide to the Company
any written comments it receives from the SEC with respect to the Offer
Documents.
 
     1.2  Company Actions. (a) The Company hereby agrees to file on the date the
Offer Documents are filed with the SEC and promptly mail to its stockholders, a
Solicitation/Recommendation Statement on Schedule 14D-9 (together with all
schedules, amendments, and supplements, the "Schedule 14D-9") containing the
recommendations of the Special Committee and the Board referred to in Section
1.1 and the opinion of the Advisor referred to in Section 1.1(a). The Company
will promptly provide to Parent any written comments it receives from the SEC
with respect to the Schedule 14D-9. The Schedule 14D-9, at the time it is first
published, disseminated, or mailed to the stockholders of the Company, will not
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary in order to make the statements
therein not misleading. The Company agrees promptly to take all steps necessary
to cause the Schedule 14D-9 to be corrected to the extent reasonably requested
by Parent to reflect any change in information concerning Parent, Newco, or the
Offer, and, as corrected, to be filed with the SEC and disseminated to the
stockholders of the Company, as and to the extent required by applicable law.
 
     (b) In connection with the Offer, the Company will promptly furnish, or
request its transfer agent to furnish, Parent with mailing labels, security
position listings, and any available listing or computer files containing the
names and addresses of the record holders of Shares as of the most recent
practicable date and will furnish Parent with such information and assistance
(including updated lists of security position listings and listing or computer
files) as Parent or its agents may reasonably request in order to communicate
the Offer to the record and beneficial holders of Shares. Subject to applicable
law and except for such steps as are necessary to disseminate the Offer
Documents, Parent and its affiliates will hold in confidence the information
contained in any such labels, listings, and files, will use such information
only in connection with the Offer and the Merger, and, if this Agreement is
terminated, will deliver to the Company all copies of such information in its
possession. Parent agrees to reimburse the Company for all expenses incurred by
it in complying with this Section 1.2(b).
 
                                   ARTICLE II
 
                                   THE MERGER
 
     2.1  The Merger. Upon the terms and subject to the conditions of this
Agreement and in accordance with the Delaware General Corporation Law (the
"DGCL"), Newco will be merged with and into the Company as soon as practicable
following the satisfaction or waiver of the conditions set forth in Article VI.
Following the Merger, the Company will continue as the surviving corporation
(the "Surviving Corporation") and the separate corporate existence of Newco will
cease. At the election of Parent, any one or more direct or indirect
wholly-owned subsidiaries of Parent incorporated under the laws of the State of
Delaware may be substituted for Newco as a constituent corporation in the
Merger. As used in this Agreement, the term "Newco" refers to any such
substituted corporation.
 
     2.2  Effective Time. The Merger will be consummated by filing with the
Delaware Secretary of State a certificate of merger or certificate of ownership
and merger in accordance with the DGCL (the "Certificate of Merger") in such
form as is required by, and executed in accordance with, the relevant provisions
of the
                                        3
<PAGE>   52
 
DGCL, and such other documents as may be required by the provisions of the DGCL.
The Merger will be effective at the time of such filing or at such later time as
is specified in the Certificate of Merger in accordance with the provisions of
the DGCL. Such time of effectiveness is referred to as the "Effective Time."
 
     2.3  Effects of the Merger. The Merger will have the effects set forth in
sec. 259 of the DGCL. As of the Effective Time, the Company will be a
wholly-owned direct or indirect subsidiary of Parent. Without limiting the
foregoing, at the Effective Time, all properties, rights, privileges, powers,
and franchises of the Company and Newco will vest in the Surviving Corporation
and all debts, liabilities, obligations, and duties of the Company and Newco
will become the debts, liabilities, obligations, and duties of the Surviving
Corporation.
 
     2.4  Certificate of Incorporation. The Certificate of Incorporation of the
Company as in effect at the Effective Time will be the Certificate of
Incorporation of the Surviving Corporation until amended in accordance with
applicable law, except that at the election of Parent, the Company will amend
its Certificate of Incorporation at the Effective Time to conform as nearly as
possible to the Certificate of Incorporation of Newco.
 
     2.5  Bylaws. The Bylaws of the Company as in effect immediately prior to
the Effective Time will be the Bylaws of the Surviving Corporation until amended
in accordance with applicable law, except that at the election of Parent, the
Company will amend its Bylaws immediately prior to the Effective Time to conform
as nearly as possible to the Bylaws of Newco.
 
     2.6  Directors. The directors of Newco at the Effective Time and John R.
Meyers will be the initial directors of the Surviving Corporation and will hold
office from the Effective Time until their respective successors are duly
elected or appointed and qualified.
 
     2.7  Officers. The officers of the Company at the Effective Time will be
the initial officers of the Surviving Corporation and will hold office from the
Effective Time until their respective successors are duly elected or appointed
and qualified.
 
     2.8  Conversion of the Shares. At the Effective Time:
 
     (a) Each Share issued and outstanding immediately prior to the Effective
Time (other than (i) Shares held by Parent, the Company, or any direct or
indirect subsidiary of Parent and (ii) any Dissenting Shares (as defined in
Section 2.9)) will, without further action by Parent or the Company,
automatically be canceled and extinguished and converted into the right to
receive in cash the Per Share Amount (the "Merger Consideration") without
interest, less any required withholding taxes, upon surrender of the certificate
formerly representing such Share in accordance with Section 2.11.
 
     (b) Each Share issued and outstanding immediately prior to the Effective
Time that is owned or held by the Company will be canceled and retired and cease
to exist, without any conversion, and no payment will be made with respect to
any such Share.
 
     (c) Each Share issued and outstanding immediately prior to the Effective
Time that is owned or held by Parent or any direct or indirect subsidiary of
Parent (other than the Company) will remain issued and outstanding.
 
     2.9  Dissenting Shares. (a) Notwithstanding anything in this Agreement to
the contrary, Shares that are issued and outstanding immediately prior to the
Effective Time and that are held by stockholders that have complied in all
respects with the requirements of the DGCL concerning the right of a stockholder
of the Company to dissent from the Merger and to require an appraisal of such
Shares in the manner provided in the DGCL, if applicable, and that, as of the
Effective Time, have not effectively withdrawn or lost such right to appraisal
(the "Dissenting Shares") will not be converted into or represent a right to
receive the Merger Consideration pursuant to Section 2.8, but the holders of
such Dissenting Shares will be entitled only to such rights as are granted under
sec. 262 of the DGCL. Each holder of Dissenting Shares that becomes entitled to
payment for such Shares pursuant to such section of the DGCL will receive
payment for such Dissenting Shares from the Surviving Corporation in accordance
with the DGCL; provided, however, that to the extent that any holder or holders
of Shares have failed to establish the entitlement to appraisal rights as
provided in
                                        4
<PAGE>   53
 
sec. 262 of the DGCL, such holder or holders (as the case may be) will forfeit
the right to appraisal of such Shares and each such Share will thereupon be
deemed to have been converted, as of the Effective Time, into and represent the
right to receive payment from the Surviving Corporation of the Merger
Consideration, without interest, as provided in Section 2.8.
 
     (b) The Company will give Parent (i) prompt notice of any written demands
for appraisal, withdrawals of demands for appraisal, and any other instrument
served pursuant to sec. 262 of the DGCL received by the Company and (ii) the
opportunity to direct all negotiations and proceedings with respect to demands
for appraisal under sec. 262 of the DGCL. The Company will not, except with the
express written consent of Parent, voluntarily make any payment with respect to
any demands for appraisal or settle or offer to settle any such demands.
 
     2.10  Conversion of the Common Stock of Newco. Each share of the common
stock of Newco issued and outstanding immediately prior to the Effective Time
will be canceled and retired and cease to exist, without any conversion, and no
payment will be made with respect to any such Share.
 
     2.11  Payment for Shares. (a) Prior to the Effective Time, Parent will
appoint a bank or trust company reasonably acceptable to the Company as agent
for the holders of Shares (the "Paying Agent") to receive and disburse the cash
to which holders of Shares become entitled pursuant to Section 2.8. At the
Effective Time, Parent will provide the Paying Agent with sufficient cash to
allow the Merger Consideration to be paid by the Paying Agent for each Share
then entitled to receive the Merger Consideration (the "Payment Fund").
 
     (b) Promptly after the Effective Time, Parent will cause the Paying Agent
to mail to each record holder immediately prior to the Effective Time of an
outstanding certificate or certificates representing Shares that as of the
Effective Time represent the right to receive the Merger Consideration (the
"Certificates"), a form of letter of transmittal (which will specify that
delivery will be effected, and risk of loss and title to the Certificates will
pass, only upon proper delivery of the Certificates to the Paying Agent) and
instructions for use in effecting the surrender of the Certificates for payment.
Upon surrender to the Paying Agent of a Certificate, together with such letter
of transmittal duly executed and completed in accordance with its instructions
and such other documents as may be requested, the holder of such Certificate
will be entitled to receive in exchange for such Certificate, subject to any
required withholding of taxes, the Merger Consideration and such Certificate
will forthwith be canceled. No interest will be paid or accrued on the Merger
Consideration upon the surrender of the Certificates. If payment or delivery is
to be made to a person other than the person in whose name the Certificate
surrendered is registered, it will be a condition of payment or delivery that
the Certificate so surrendered be properly endorsed, with signature properly
guaranteed, or otherwise be in proper form for transfer and that the person
requesting such payment or delivery pay any transfer or other taxes required by
reason of the payment or delivery to a person other than the registered holder
of the Certificate surrendered or establish to the satisfaction of the Surviving
Corporation that such tax has been paid or is not applicable. Until surrendered
in accordance with the provisions of this Section 2.11, each Certificate (other
than Certificates held by persons referred to in Section 2.8(a)(i) and (ii))
will represent for all purposes only the right to receive the Merger
Consideration, without interest and subject to any required withholding of
taxes. Notwithstanding the foregoing, neither the Paying Agent nor any party to
this Agreement will be liable to a holder of Shares for any Merger Consideration
delivered to a public official pursuant to applicable abandoned property,
escheat, or similar laws.
 
     (c) Promptly following the date that is six months after the Effective
Time, the Paying Agent will return to the Surviving Corporation all cash,
certificates, and other property in its possession that constitute any portion
of the Payment Fund, and the duties of the Paying Agent will terminate.
Thereafter, each holder of a Certificate formerly representing a Share may
surrender such Certificate to the Surviving Corporation and (subject to
applicable abandoned property, escheat, and similar laws) receive in exchange
therefor the Merger Consideration without any interest. Neither Parent, Newco,
nor the Surviving Corporation will be liable to any holder of Shares for any
amount paid to a public official pursuant to applicable abandoned property,
escheat, or similar laws. If Certificates are not surrendered prior to midnight
on the second anniversary of the Effective Time, unclaimed amounts of the
Payment Fund will, to the extent permitted under applicable law, become the
property of the Surviving Corporation. Notwithstanding the foregoing, the
Surviving Corporation will be
 
                                        5
<PAGE>   54
 
entitled to receive from time to time all interest or other amounts earned with
respect to the Payment Fund as such amounts accrue or become available.
 
     (d) Any portion of the Payment Fund for which rights to dissent have been
perfected will be returned to the Surviving Corporation upon demand.
 
     (e) After the Effective Time there will be no registration of transfers on
the stock transfer books of the Surviving Corporation of the Shares that were
outstanding immediately prior to the Effective Time.
 
     2.12  Closing. Upon the terms and subject to the conditions of this
Agreement, as soon as practicable after all the conditions to the obligations of
the parties to effect the Merger under Article VI have been satisfied or waived,
the Company and Newco will (a) file with the Secretary of State of Delaware the
Certificate of Merger and (b) take all such other and further actions as may be
required by law to make the Merger effective. Contemporaneous with the filing
referred to in this Section 2.12, a closing (the "Closing") will be held at the
offices of Hughes & Luce, L.L.P., 1717 Main Street, Suite 2800, Dallas, Texas or
at such other location as the parties to this Agreement may establish for the
purpose of confirming all the foregoing. The date and the time of such Closing
are referred to as the "Closing Date."
 
                                  ARTICLE III
 
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
 
     The Company represents and warrants to Parent and Newco that:
 
     3.1  Organization and Qualification. The Company is a corporation duly
organized, validly existing, and in good standing under the laws of the State of
Delaware and has the requisite corporate power and authority and any necessary
governmental authority to own, operate, and lease its properties and assets and
to carry on its business as it is now being conducted, except for failures to
have such power and authority as would not have a Company Material Adverse
Effect (as defined below). The Company is duly qualified or licensed to do
business and is in good standing in each jurisdiction where the character of its
properties owned or leased or the nature of its activities makes such
qualification or licensing necessary, except for failures to be so qualified or
licensed and in good standing as would not have a Company Material Adverse
Effect. The Company does not beneficially own any equity interest in any entity,
and the Company is not a party to any joint venture, partnership, or similar
arrangement. For the purposes of this Agreement, "Company Material Adverse
Effect" means any change or effect that, individually or when taken together
with all such other changes or effects, would be materially adverse to the
condition (financial or other), business, operations, properties, assets,
liabilities, prospects, or results of operations of the Company.
 
     3.2  Authorized Capital. The authorized capital stock of the Company
consists solely of 18,000,000 shares of common stock, par value $.01 per share,
of which 5,072,255 shares were outstanding as of February 28, 1999, and
2,000,000 shares of preferred stock, $.01 par value per share, of which no
shares were outstanding as of February 28, 1999. All of the outstanding Shares
have been duly authorized and are validly issued, fully paid, nonassessable, and
free of preemptive rights. Schedule 3.2 lists each outstanding stock option of
the Company (the "Employee Options"), the number of shares covered by such
Employee Options, the exercise prices, and the exercise dates. Except for the
Rights, as set forth above or on Schedule 3.2, there are no preemptive rights
nor any outstanding subscriptions, options, warrants, rights, convertible
securities, or other agreements or commitments of any character relating to the
issued or unissued capital stock or other securities of the Company.
 
     3.3  Corporate Authorization. The Company has the full corporate power and
authority to execute and deliver this Agreement and, subject to any necessary
stockholder approval of the Merger, to consummate the transactions contemplated
by this Agreement. The execution, delivery, and performance by the Company of
this Agreement and the consummation by the Company of the Merger and the other
transactions contemplated by this Agreement have been duly and validly
authorized by all necessary corporate action and, except for any required
approval of the Merger and any adoption of this Agreement by the stockholders of
the Company in connection with the consummation of the Merger, no other
corporate proceedings on the part of
 
                                        6
<PAGE>   55
 
the Company are necessary to authorize this Agreement or to consummate the
transactions contemplated by this Agreement. This Agreement has been duly and
validly executed and delivered by the Company and constitutes a valid and
binding obligation of the Company, enforceable against the Company in accordance
with its terms.
 
     3.4  Approvals; No Violations. Except for applicable requirements of the
Exchange Act and the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (the
"HSR Act") and the filing of the Certificate of Merger as required by the DGCL,
no filing with, and no permit, authorization, consent, or approval of, any
foreign or domestic public body or authority is necessary for the consummation
by the Company of the transactions contemplated by this Agreement. Except as set
forth on Schedule 3.4, the execution and delivery of this Agreement by the
Company, the consummation by the Company of the transactions contemplated by
this Agreement and the compliance by the Company with any of the provisions of
this Agreement will not (a) conflict with or result in any breach of any
provision of the Certificate of Incorporation or Bylaws of the Company; (b)
result in a violation or breach of, or constitute (with or without notice or
lapse of time or both) a default (or give rise to any right of termination,
cancellation, or acceleration) under, any of the terms, conditions, or
provisions of any note, bond, mortgage, indenture, license, lease, contract,
agreement, or other instrument or obligation to which the Company is a party or
by which any of its properties or assets may be bound; or (c) violate any order,
writ, injunction, decree, statute, rule, or regulation applicable to the Company
or any of its properties or assets; except such violations, conflicts, breaches,
defaults, terminations, or accelerations referred to in subsections (b) and (c)
of this Section 3.4 as would not have a Company Material Adverse Effect or
materially adversely affect the ability of any party to perform its obligations
under this Agreement.
 
     3.5  SEC Filings; Financial Statements. Since December 31, 1995, the
Company has timely filed with the SEC all forms, reports, statements, and
documents required to be filed by it pursuant to the Securities Act of 1933, as
amended (the "Securities Act") and the rules and regulations promulgated
thereunder, and the Exchange Act, and the rules and regulations promulgated
thereunder (collectively, and including, when filed, the Schedule 14D-9, the
"Company Reports") and has otherwise complied in all material respects with the
requirements of the Securities Act and the Exchange Act. To the knowledge of the
Special Committee, as of their respective dates, the Company Reports did not and
will not contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
made therein, in light of the circumstances under which they were or will be
made, not misleading. Each of the historical balance sheets as of its date
included in or incorporated by reference into the Company Reports and the
audited financial statements of the Company for the year ended December 31,
1998, a copy of which has been delivered to Parent (the "1998 Audit") and each
of the historical statements of operations, stockholders' equity, and cash flows
included in or incorporated by reference into the Company Reports and the 1998
Audit (including any related notes and schedules) fairly presents or will fairly
present the financial condition, results of operations, stockholders' equity,
and cash flows, as the case may be, of the Company for the periods set forth, in
each case in accordance with generally accepted accounting principles
consistently applied during the periods involved.
 
     3.6  Absence of Undisclosed Liabilities. To the knowledge of the Special
Committee, except as set forth in the 1998 Audit (or the notes thereto), the
Company does not have any liabilities or obligations of any nature, whether or
not accrued, contingent, or otherwise, that would be required to be included on
a balance sheet of the Company as of December 31, 1998 (or disclosed in the
notes thereto) prepared in accordance with generally accepted accounting
principles, and that would have a Company Material Adverse Effect. Since
December 31, 1998, the Company has conducted its businesses in a manner
consistent with past practices, and the Company has not become subject to any
liabilities or obligations that would be required to be included on a balance
sheet of the Company (or disclosed in notes) prepared in accordance with
generally accepted accounting principles and that would have a Company Material
Adverse Effect, other than liabilities or obligations incurred in the ordinary
course of business consistent with past practices or incurred in connection with
the Offer, this Agreement, or the Merger and disclosed in the Company Reports.
 
     3.7  Finders and Investment Bankers. Neither the Company nor any of its
officers or directors has employed any investment banker, business consultant,
financial advisor, broker or finder in connection with
                                        7
<PAGE>   56
 
the transactions contemplated by this Agreement, except for the Advisor, or
incurred any liability for any investment banking, business consultancy,
financial advisory, brokerage or finders' fees or commissions in connection with
the transactions contemplated hereby, except for fees payable to the Advisor (as
reflected in the agreement between such firm and the Company, a copy of which
has been delivered to Parent).
 
                                   ARTICLE IV
 
               REPRESENTATIONS AND WARRANTIES OF PARENT AND NEWCO
 
     Each of Parent and Newco represents and warrants to the Company as follows:
 
     4.1  Organization and Qualification. Each of Parent and Newco is a
corporation duly organized, validly existing, and in good standing under the
laws of the State of Delaware and has all requisite corporate power and
authority and any necessary governmental authority to carry on its business as
now conducted. Each of Parent and Newco is duly qualified or licensed to do
business, and is in good standing, in each jurisdiction where the character of
its properties owned or leased or the nature of its activities makes such
qualification or licensing necessary, except for failures to be so duly
qualified or licensed and in good standing as would not have a Parent Material
Adverse Effect. For the purposes of this Agreement, "Parent Material Adverse
Effect" means any change or effect that, individually or when taken together
with all such other changes or effects, would be materially adverse to the
condition (financial or other), business, operations, properties, assets,
liabilities, prospects, or results of operations of Parent and its subsidiaries,
taken as a whole.
 
     4.2  Corporate Authorization. Each of Parent and Newco has the full
corporate power and authority to execute and deliver this Agreement and to
consummate the transactions contemplated by this Agreement. The execution,
delivery, and performance by each of Parent and Newco of this Agreement and the
consummation by Parent and Newco of the Merger and of the other transactions
necessary for such consummation have been duly and validly authorized by Parent
as sole stockholder of Newco and by the Board of Directors of each of Parent and
Newco and no other corporate proceedings on the part of Parent or Newco are
necessary to authorize this Agreement or to consummate the transactions
contemplated by this Agreement. This Agreement has been duly and validly
executed and delivered by each of Parent and Newco and constitutes a valid and
binding obligation of each of Parent and Newco, enforceable in accordance with
its terms.
 
     4.3  Approvals; No Violations. Except for applicable requirements of the
Exchange Act and the HSR Act and the filing and recordation of the Certificate
of Merger as required by the DGCL, no filing with, and no permit, authorization,
consent, or approval of any foreign or domestic public body or authority is
necessary for the consummation by Parent and Newco of the transactions
contemplated by this Agreement. Except as set forth on Schedule 4.3, neither the
execution and delivery of this Agreement by Parent and Newco nor the
consummation by Parent and Newco of the transactions contemplated by this
Agreement nor compliance by them with any of the provisions of this Agreement
will (a) conflict with or result in any breach of any provision of the
organizational documents or bylaws of Parent or Newco; (b) result in a violation
or breach of, or constitute (with or without due notice or lapse of time or
both) a default (or give rise to any right of termination, cancellation, or
acceleration under), any of the terms, conditions, or provisions of any note,
bond, mortgage, indenture, license, lease, contract, agreement, or other
instrument or obligation to which Parent or Newco is a party or by which either
of them or any of their respective properties or assets may be bound; or (c)
violate any order, writ, injunction, decree, statute, rule, or regulation
applicable to Parent or Newco or any of their respective properties or assets;
except such violations, conflicts, breaches, defaults, terminations, or
accelerations referred to in subsections (b) or (c) of this Section 4.3 as would
not have a Parent Material Adverse Effect.
 
     4.4  No Prior Activities. Except for obligations or liabilities incurred in
connection with its incorporation or organization, the Offer, or the negotiation
and consummation of this Agreement and the transactions contemplated by this
Agreement, Newco has not incurred any obligations or liabilities, nor has it
engaged in any business or activities of any type or kind whatsoever or entered
into any agreements or arrangements with any person.
 
                                        8
<PAGE>   57
 
     4.5  Information Supplied. None of the information supplied or to be
supplied by Parent or Newco for inclusion or incorporation by reference in the
Offer Documents, the Schedule 13E-3 and 14D-1, or the Proxy Statement (as
defined below) will, in the case of the Offer Documents and the Schedule 13E-3
and 14D-1, at the respective times the Offer Documents and the Schedule 13E-3
and 14D-1 are filed with the SEC or first published, sent, or given to the
stockholders of the Company, or, in the case of the Proxy Statement, at the date
the Proxy Statement is first mailed to the stockholders of the Company or at the
time of the meeting of the stockholders of the Company held to vote on approval
and adoption of this Agreement and the Merger, contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading. Parent and Newco agree
to promptly correct any information supplied by Parent or Newco for inclusion in
such documents that becomes false or misleading in any material respect. The
Offer Documents will comply as to form in all material respects with the
requirements of the Exchange Act and the rules and regulations promulgated
thereunder, except that no representation or warranty is made by Parent or Newco
with respect to statements made or incorporated by reference in the Offer
Documents based on information supplied by the Company for inclusion or
incorporation by reference in the Offer Documents.
 
     4.6  Financing. Parent intends to fund the aggregate purchase price for the
Shares from borrowings under its existing bank credit agreement. As of the date
hereof, Parent has taken all actions and satisfied all conditions necessary to
borrow the funds necessary to consummate the Offer and the Merger. Parent will
take all actions necessary to continue to have such funds available upon the
closing of the Offer or the Merger, as the case may be, and will avoid any
actions that would result in the unavailability of such funds.
 
     4.7  Company Reports.
 
     (a) To the knowledge of Parent, as of their respective dates, the Company
Reports did not contain any untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements made therein, in light of the circumstances under which they were
made, not misleading.
 
     (b) As of the date hereof, Parent has no knowledge of any discussions or
negotiations between it, the Company or any of their respective affiliates and
any other entity that would result in a Third Party Acquisition (as defined in
Section 7.3 hereof).
 
     4.8  Company Compliance. As of the date hereof, Parent knows of no event or
circumstance that would limit Company's compliance with its obligations
hereunder, including obligations of the Company contained in Section 5.
 
                                   ARTICLE V
 
                                   COVENANTS
 
     5.1  Conduct of Business of the Company.
 
     (a) Except as expressly contemplated by this Agreement, during the period
from the date of this Agreement to the Effective Time:
 
          (i) The Company will conduct its business solely in the ordinary
     course consistent with past practices.
 
          (ii) The Company will not intentionally take or willfully omit to take
     any actions that results in or would result in a Company Material Adverse
     Effect.
 
          (iii) The Company will use its reasonable best efforts to preserve
     intact the business organization of the Company, to keep available the
     services of its and their present officers and key employees and
     consultants, and to maintain satisfactory relationships with customers,
     agents, reinsurers, suppliers, and other persons having business
     relationships with the Company.
 
                                        9
<PAGE>   58
 
     (b) Without limiting the provisions of Section 5.1(a) or as otherwise
expressly provided in this Agreement, the Company will not, without Parent's
prior written consent, during the period from the date of this Agreement to the
Effective Time:
 
          (i) issue, sell, or dispose of additional shares of capital stock of
     any class (including the Shares) of the Company, or securities convertible
     into or exchangeable for any such shares or securities, or any rights,
     warrants, or options to acquire any such shares or securities, other than
     Shares issued upon exercise of options disclosed in Schedule 3.2, in each
     case in accordance with the terms disclosed on Schedule 3.2;
 
          (ii) redeem, purchase, or otherwise acquire, or propose to redeem,
     purchase, or otherwise acquire, any of its outstanding capital stock, or
     other securities of the Company;
 
          (iii) split, combine, subdivide, or reclassify any of its capital
     stock or declare, set aside, make, or pay any dividend or distribution on
     any shares of its capital stock;
 
          (iv) sell, pledge, dispose of, or encumber any of its assets, except
     for sales, pledges, dispositions, or encumbrances in the ordinary course of
     business consistent with past practices;
 
          (v) incur or modify any indebtedness or issue or sell any debt
     securities, or assume, guarantee, endorse, or otherwise as an accommodation
     become absolutely or contingently responsible for obligations of any other
     person, or make any loans or advances, other than in the ordinary course of
     business consistent with past practices;
 
          (vi) adopt or amend any bonus, profit sharing, compensation,
     severance, termination, stock option, pension, retirement, deferred
     compensation, employment or other employee benefit agreements, trusts,
     plans, funds, or other arrangements for the benefit or welfare of any
     director, officer, or employee, or (except for normal increases in the
     ordinary course of business that are consistent with past practices and
     that, in the aggregate, do not result in a material increase in benefits or
     compensation expense to the Company) increase in any manner the
     compensation or fringe benefits of any director, officer, or employee or
     pay any benefit not required by any existing plan or arrangement
     (including, without limitation, the granting or vesting of stock options or
     stock appreciation rights) or take any action or grant any benefit not
     expressly required under the terms of any existing agreements, trusts,
     plans, funds, or other such arrangements or enter into any contract,
     agreement, commitment, or arrangement to do any of the foregoing; or make
     or agree to make any payments to any directors, officers, agents,
     contractors, or employees relating to a change or potential change in
     control of the Company;
 
          (vii) acquire by merger, consolidation, or acquisition of stock or
     assets any corporation, partnership, or other business organization or
     division or make any investment either by purchase of stock or securities,
     contributions to capital, property transfer, or purchase of any material
     amount of property or assets, in any other person;
 
          (viii) except as required by this Agreement, adopt any amendments to
     its Certificate of Incorporation or Bylaws;
 
          (ix) take any action other than in the ordinary course of business and
     consistent with past practices, to pay, discharge, settle, or satisfy any
     claim, liability, or obligation (absolute or contingent, accrued or
     unaccrued, asserted or unasserted, or otherwise);
 
          (x) change any method of accounting or accounting practice used by the
     Company, except for any change required by reason of a concurrent change in
     generally accepted accounting principles;
 
          (xi) revalue in any respect any of its assets, including, without
     limitation, writing down the value of its portfolio or writing off notes or
     accounts receivable other than in the ordinary course of business
     consistent with past practices;
 
          (xii) authorize any unbudgeted capital expenditure or expenditures
     that, individually, is in excess of $300,000 or, in the aggregate, are in
     excess of $500,000;
 
                                       10
<PAGE>   59
 
          (xiii) make any tax election, settle or compromise any federal, state,
     or local tax liability or consent to the extension of time for the
     assessment or collection of any federal, state, or local tax;
 
          (xiv) settle or compromise any pending or threatened suit, action, or
     claim material to the Company or relevant to the transactions contemplated
     by this Agreement;
 
          (xv) enter into any agreement, arrangement, or understanding to do any
     of the foregoing actions in this Section 5.1, including any agreement,
     arrangement, or understanding resulting in or providing for a sale of any
     assets of the Company (other than a sale of assets in the ordinary course
     of business and consistent with past practices) or a merger or other
     liquidation, sale, or disposition of the Company; or
 
          (xvi) voluntarily take any action or willfully omit to take any action
     that would make any representation or warranty in Article III untrue or
     incorrect in any material respect at any time, including as of the date of
     this Agreement and as of the time of consummation of the Offer and the
     Effective Time, as if made as of such time.
 
Parent will not and will not permit any if its affiliates (other than the
Company) to take any action for the purpose of causing the Company to violate
any of the Company's obligations under this Agreement including its obligations
under this Section 5.1. The Parent will, and will cause each of its affiliates
(other than the Company), to take all action reasonably necessary to allow the
Company to comply with all its obligations in this Agreement, including the
obligations of the Company contained in this Section 5.1.
 
     5.2  Proxy Statement. Promptly after the execution of this Agreement, the
Company and Parent will cooperate with each other and use all reasonable efforts
to prepare, and the Company and Parent will file with the SEC, as soon as is
reasonably practicable after completion of the Offer, a proxy statement,
together with a form of proxy, or information statement, with respect to the
Special Meeting (as defined in Section 5.3), if such Special Meeting is required
to be held pursuant to Section 5.3. For the purposes of this Agreement, the term
"Proxy Statement" means such proxy or information statement filed in final form
with the SEC at the time it initially is mailed to the stockholders of the
Company and all amendments or supplements thereto, if any, similarly filed and
mailed. The parties will use all reasonable efforts to have the Proxy Statement
cleared by the SEC as promptly as practicable after filing and, as promptly as
practicable after the Proxy Statement has been so cleared, will mail the Proxy
Statement to the stockholders of the Company as of the record date for the
Special Meeting. The Company represents that none of the information provided or
to be provided by it, and Parent and Newco represent that none of the
information provided or to be provided by them, for use in the Proxy Statement
will, on the date the Proxy Statement is first mailed to the stockholders of the
Company and on the date of the Special Meeting, be false or misleading with
respect to any material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in light of
the circumstances under which they are made, not misleading, and Parent, Newco,
and the Company each agrees to correct any information provided by it for use in
the Proxy Statement that has become false or misleading in any material respect
and file such amendments and supplements as are necessary. The Proxy Statement
will comply as to form in all material respects with all applicable requirements
of federal securities laws and applicable state laws.
 
     5.3  Action of Stockholders of the Company; Voting and Disposition of the
Shares.
 
     (a) Promptly after completion of the Offer and if required by applicable
law in order to consummate the Merger, the Company will take all action
necessary in accordance with the DGCL and the Certificate of Incorporation and
Bylaws of the Company, to call a meeting of its stockholders (the "Special
Meeting") with a record date as of which Parent is the record owner of the
Shares purchased pursuant to the Offer at which the stockholders of the Company
will consider and vote upon the Merger and this Agreement. Unless the fiduciary
duties of the Special Committee or the Board under applicable law require
otherwise, the Proxy Statement will contain the unanimous recommendation of the
Special Committee and the Board that the stockholders of the Company vote to
adopt and approve the Merger and this Agreement. The Company will, at the
request of Parent, use all reasonable efforts to obtain from its stockholders
proxies in favor of such adoption and approval and to take all other action
necessary, or, in the reasonable judgment of the Company and Parent, helpful to
secure the vote or consent of stockholders required by the DGCL to effect the
Merger.
                                       11
<PAGE>   60
 
Notwithstanding the foregoing, in the event that Parent determines to effect the
Merger without a meeting of the stockholders of the Company pursuant to sec. 228
or sec. 253 of the DGCL, the parties will take all necessary or appropriate
action to cause the Merger to become effective as soon as practicable after
expiration of the Offer without a meeting of stockholders, in accordance with
either such section of the DGCL.
 
     (b) At the Special Meeting, Parent, its subsidiaries and affiliates (other
than those affiliates who are natural persons) will vote, or cause to be voted
(other than those affiliates who are natural persons), all of the Shares (i)
then owned by any of them or (ii) as to which a proxy or power of attorney is
held by any of them in favor of the Merger.
 
     5.4  Additional Agreements. Subject to the terms and conditions of this
Agreement and to the fiduciary obligations of the Special Committee or the Board
under applicable law, each of the parties agrees to use their respective
reasonable best efforts to take, or cause to be taken, all actions to do, or
cause to be done, all things necessary, proper, or advisable to consummate and
make effective as promptly as practicable the transactions contemplated by this
Agreement (including consummation of the Offer and the Merger) and to cooperate
with each other in connection with the foregoing, including, without limitation,
using their respective reasonable best efforts (a) to obtain all necessary
waivers, consents, and approvals from other parties to loan agreements, leases,
and other contracts, (b) to obtain all necessary consents, approvals, and
authorizations as are required to be obtained under any federal, state, or
foreign law or regulations, (c) to lift or rescind any injunction or restraining
order or other order adversely affecting the ability of the parties to
consummate the transactions contemplated by this Agreement, (d) to prepare and
effect all necessary registrations and filings, and (e) to fulfill all
conditions to and covenants contained in this Agreement. If, after the Effective
Time, any action is necessary to effect the purposes of this Agreement, the
proper officers and directors of each party will take all such necessary action.
 
     5.5  Notification of Certain Matters. The Company will give prompt written
notice to Parent and Newco, and Parent and Newco will give prompt written notice
to the Company, of (a) the occurrence, or failure to occur, of any event, which
occurrence or failure would cause any representation or warranty contained in
this Agreement to be untrue or inaccurate in any material respect at any time,
(b) any material failure of the Company, Parent, or Newco, as the case may be,
or of any officer, director, employee, or agent of the Company, Parent, or
Newco, to comply with or satisfy any covenant, condition, or agreement to be
complied with or satisfied by it under this Agreement, (c) any act, omission to
act, event, or occurrence that, with notice, the passage of time, or otherwise,
would result in a Company Material Adverse Effect, and (d) any material
contingent liability of the Company for which it reasonably believes it will,
with the passage of time or otherwise, become liable. No such notification will
affect the representations or warranties of the parties or the conditions to the
obligations of the parties under this Agreement. Parent will promptly notify the
Company and the Advisor of (i) any information it obtains that would make the
representations and warranties contained in Section 4.7 untrue or inaccurate in
any material respect and (ii) any bona fide proposal received by Parent for a
Third Party Acquisition (as defined in Section 7.3 hereof).
 
     5.6  Access to Information.
 
     (a) From the date of this Agreement to the Effective Time, the Company
will, and will cause its officers, directors, employees, and agents upon
reasonable notice to, afford to officers, employees, and agents of Parent, Newco
and their affiliates and the banks, other financial institutions, and investment
bankers working with Parent or Newco, and their respective officers, employees,
and agents, complete access at all reasonable times to its officers, employees,
agents, properties, books, records, and contracts, and will furnish Parent,
Newco and their affiliates and the banks, other financial institutions, and
investments bankers working with Parent or Newco, all financial, operating, and
other data and information as they reasonably request.
 
     (b) Each of Parent and Newco will hold and will cause its directors,
officers, agents, employees, consultants, and advisors to hold in confidence,
unless compelled to disclose by judicial or administrative process or by other
requirements of law, all documents and information concerning the Company
furnished to such persons in connection with the transactions contemplated by
this Agreement (except to the extent that such information can be shown to have
been (i) previously known by such persons from sources other than the Company,
or its directors, officers, representatives, or affiliates, (ii) in the public
domain through no fault of
                                       12
<PAGE>   61
 
such persons, or (iii) later lawfully acquired by such persons on a
non-confidential basis from other sources who are not known by Parent or Newco
to be bound by a confidentiality agreement or otherwise prohibited from
transmitting the information to Parent or Newco by a contractual, legal, or
fiduciary obligation) and will not release or disclose such information to any
other person, except its directors, officers, agents, employees, consultants,
and advisors, in connection with this Agreement who need to know such
information. If the transactions contemplated by this Agreement are not
consummated, such confidence shall be maintained and, if requested by or on
behalf of the Company, Parent and Newco will, and will use all reasonable
efforts to cause their auditors, attorneys, financial advisors, and other
consultants, agents, and representatives to, return to the Company or destroy
all copies of written information furnished by the Company to Parent and Newco
or their agents, representatives, or advisors. It is understood that Parent and
Newco will be deemed to have satisfied their obligation to hold such information
confidential if they exercise the same care as they take to preserve
confidentiality for their own similar information.
 
     (c) No investigation pursuant to this Section 5.6 will affect any
representations or warranties of the parties in this Agreement or the conditions
to the obligations of the parties to this Agreement; provided, however, that the
Company shall not be deemed to have breached a representation or warranty herein
to the extent that such breach was known to Parent as of the date hereof.
 
     5.7  Public Announcements. Parent and Newco on the one hand and the Special
Committee on the other hand will consult with each other before issuing any
press release or otherwise making any public statements with respect to this
Agreement, the Offer, the Merger, or the other transactions contemplated by this
Agreement, and will not issue any such press release or make any such public
statement prior to such consultation, except as may be required by law or the
listing requirements of any securities exchange.
 
     5.8  Officers' and Directors' Indemnification.
 
     (a) Parent and Newco agree that all rights to indemnification now existing
in favor of the directors or officers of the Company as provided in the
Company's Certificate of Incorporation or Bylaws will, to the extent such rights
are in accordance with applicable law, survive the Merger and stay in effect in
accordance with their respective terms for a period of not less than six years
after the Effective Time.
 
     (b) In the event any action, suit, proceeding, or investigation relating to
this Agreement or to the transactions contemplated by this Agreement is
commenced by a third party, whether before or after the Effective Time, the
parties to this Agreement agree, subject to the fiduciary duties of the
respective Directors of the Company and Parent, to cooperate and use all
reasonable efforts to defend against and respond to such action, suit,
proceeding, or investigation.
 
     (c) For a period of six years after the Effective Time, Parent shall cause
the Surviving Corporation to maintain officers' and directors' liability
insurance for all persons currently covered under the Company's officers' and
directors' liability insurance policies, in their capacities as officers and
directors, on terms no less favorable to the covered persons than such existing
insurance; provided, however, that Parent shall not be required in order to
maintain or procure such coverage to pay an annual premium in excess of 150% of
the current annual premium paid by the Company for its existing coverage (the
"Cap"); and provided, further, that if equivalent coverage cannot be obtained,
or can be obtained only by paying an annual premium in excess of the Cap, Parent
shall only be required to obtain as much coverage as can be obtained by paying
an annual premium equal to the Cap.
 
     (d) If Parent or any of its successors or assigns (i) shall merge or
consolidate with or merge into any other corporation or entity and shall not be
the surviving or continuing corporation or entity of such consolidation or
merger or (ii) shall transfer all or substantially all of its properties and
assets to any individual, corporation or other entity, then in each such case,
proper provisions shall be made so that the successors or assigns of the Parent
shall assume all of the obligations set forth in this Section 5.8.
 
     5.9  Employee Options; Performance Award Units. The Company will cooperate
with Parent to terminate the 1991 Stock Option Plan and 1995 Performance Award
Program of the Company in accordance with their respective terms.
 
                                       13
<PAGE>   62
 
     5.10  Other Actions by the Company. If any "fair price," "moratorium,"
"control share acquisition," or other form of antitakeover statute, regulation,
charter provision, or contract is or becomes applicable to the transactions
contemplated by this Agreement, the Company will use its best efforts to grant
such approvals and take such actions as are necessary under such laws,
provisions, or contracts so that the transactions contemplated by this Agreement
may be consummated as promptly as practicable on the terms contemplated by this
Agreement and otherwise act to eliminate or minimize the effects of such
statute, regulation, provision or contract on the transactions contemplated by
this Agreement.
 
                                   ARTICLE VI
 
                    CONDITIONS TO CONSUMMATION OF THE MERGER
 
     The respective obligations of each party to effect the Merger are subject
to the satisfaction prior to the Effective Time of the following conditions:
 
     6.1  Stockholder Approval. This Agreement will have been adopted and
approved by the affirmative vote of the stockholders of the Company in
accordance with the Certificate of Incorporation and Bylaws of the Company and
with applicable law, unless no stockholder vote is required by law.
 
     6.2  No Injunction. No federal or state statute, rule, regulation,
injunction, decree, or order will be enacted, promulgated, entered, or enforced
that would (i) prohibit consummation of the Merger or of the other transactions
contemplated by this Agreement or (ii) impose any limitation on the ability of
Parent to exercise all rights of ownership with respect to the shares of Common
Stock it owns that will result in a Parent Material Adverse Effect; provided
that the parties to this Agreement agree to use their respective reasonable best
efforts to have any such injunction, decree, or order lifted.
 
     6.3  Offer. Parent will have purchased Shares pursuant to the Offer (except
that Parent in its sole discretion may waive conditions to the Offer).
 
     6.4  Governmental Consents. The waiting period applicable to the
consummation of the Merger under the HSR Act will have expired or been
terminated and all filings required to be made prior to the Effective Time with,
and all consents, approvals, permits, and authorizations required to be obtained
prior to the Effective Time from, governmental and regulatory authorities in
connection with the execution and delivery of this Agreement and the
consummation of the transactions contemplated by this Agreement will have been
made or obtained (as the case may be) except for such filings, consents,
approvals, permits and authorizations that the failure to make or obtain would
not result in a Company or Parent Material Adverse Effect.
 
                                  ARTICLE VII
 
                         TERMINATION; AMENDMENT; WAIVER
 
     7.1  Termination. This Agreement may be terminated and the Offer and the
Merger may be abandoned at any time prior to the Effective Time (notwithstanding
any approval by the stockholders of the Company of the Merger):
 
     (a) by mutual written consent of Parent, Newco, and the Company (upon
recommendation of the Special Committee);
 
     (b) by Parent and Newco or the Company if any court of competent
jurisdiction or other governmental body has issued a final order, decree, or
ruling or taken any other final action restraining, enjoining, or otherwise
prohibiting the Merger and such order, decree, ruling, or other action is or has
become nonappealable;
 
     (c) by Parent and Newco if due to an occurrence or circumstances that would
result in a failure to satisfy any conditions set forth in Annex A, Parent has
(i) failed to commence the Offer within five business days following the date of
the initial public announcement of the Offer, (ii) terminated the Offer, or
(iii) failed to pay for the Shares pursuant to the Offer by July 31, 1999;
 
                                       14
<PAGE>   63
 
     (d) by the Company if (i) there has not been a breach of any material
representation, warranty, covenant, or agreement on the part of the Company, and
Parent has (A) failed to commence the Offer within five business days following
the date of the initial public announcement of the Offer, (B) terminated the
Offer or (C) failed to pay for the Shares pursuant to the Offer by July 31, 1999
or (ii) prior to the purchase of Shares pursuant to the Offer, a person or group
has made a bona fide offer that the Special Committee or the Board by a majority
vote determines in its good faith judgment and in the exercise of its fiduciary
duties, after consultation with its financial and legal advisors, is more
favorable to the stockholders of the Company than the Offer and the Merger;
 
     (e) by Parent and Newco if prior to the purchase of Shares pursuant to the
Offer (i) there has been a breach (which breach is not cured or not capable of
being cured prior to the earlier of (A) 30 days following notice to the Company
by Parent of such breach or (B) two business days prior to the expiration date
of the Offer, as extended from time to time pursuant to the terms of this
Agreement) of any representation or warranty on the part of the Company having a
Company Material Adverse Effect or materially adversely affecting or delaying
the ability of Parent to consummate the Offer and the Merger, (ii) there has
been a breach (which breach is not cured or not capable of being cured prior to
the earlier of (A) 30 days following notice to the Company by Parent of such
breach or (B) two business days prior to the expiration date of the Offer, as
extended from time to time pursuant to the terms of this Agreement) of any
covenant or agreement on the part of the Company resulting in a Company Material
Adverse Effect or materially adversely affecting or delaying the ability of
Parent to consummate the Offer and the Merger, (iii) the Special Committee
engages in negotiations with any person or group (other than Parent or Newco)
that has proposed a Third Party Acquisition (as defined in Section 7.3) except
to the extent permitted by Section 8.8; (iv) the Company enters into an
agreement, letter of intent, or arrangement with respect to a Third Party
Acquisition, (v) the Special Committee or the Board has withdrawn or modified
(including by amendment of the Schedule 14D-9) in a manner adverse to Parent,
its approval or recommendation of the Offer, this Agreement, or the Merger or
has recommended another offer, or has adopted any resolution to effect any of
the foregoing, or (vi) the Minimum Condition has not been satisfied by the
expiration date of the Offer and on or prior to such date (A) any person or
group (other than Parent or Newco) has made and not withdrawn a public
announcement with respect to a Third Party Acquisition or (B) any person or
group (including the Company) other than Parent, its affiliates (other than the
Company) or Shapiro Capital Management Company, Inc. has become the beneficial
owner of 19.9% (except in bona fide arbitrage transactions) or more of the
Shares; or
 
     (f) by the Company if (i) there has been a breach of any representation or
warranty on the part of Parent or Newco that materially adversely affects (or
materially delays) the consummation of the Offer or the Merger or (ii) there has
been a material breach of any covenant or agreement on the part of Parent or
Newco that materially adversely affects (or materially delays) the consummation
of the Offer or the Merger.
 
     7.2  Effect of Termination. In the event of the termination and abandonment
of this Agreement pursuant to Section 7.1, this Agreement will become void and
have no effect, without any liability on the part of any party to this Agreement
or its affiliates, directors, officers, or stockholders, other than the
provisions of this Section 7.2 and Sections 5.6(b), 5.8, and 7.3. Nothing
contained in this Section 7.2 will relieve any party from liability for any
breach of this Agreement.
 
     7.3  Fees and Expenses.
 
     (a) If (i) Parent and Newco terminate this Agreement pursuant to Section
7.1(e)(v) or (ii) the Company (with the recommendation of the Special Committee)
terminates this Agreement pursuant to Section 7.1(d)(ii), then in either case
the Company will pay to Parent, within one business day following such
termination, a fee, in cash, of $675,000 (inclusive of any and all expenses
incurred by Parent, Newco and their affiliates in connection with the Offer and
the Merger and the consummation of the transactions contemplated by this
Agreement).
 
     For the purposes of this Agreement, "Third Party Acquisition" means the
occurrence of any of the following events (i) the acquisition of the Company by
merger or otherwise by any person or group other than Parent, Newco, or any
affiliate of Parent (other than the Company) or Shapiro Capital Management
Company, Inc. (a "Third Party"); (ii) the acquisition by a Third Party of more
than 19.9% of the total assets
                                       15
<PAGE>   64
 
of the Company; (iii) the acquisition by a Third Party of 19.9% or more of the
outstanding Shares from the Company or in a transaction or series of related
transactions that results in a change of control of the Company; (iv) the
adoption by the Company of a plan of liquidation or the declaration or payment
of an extraordinary dividend; or (v) the acquisition by the Company of more than
19.9% of the outstanding Shares.
 
     (b) Except as specifically provided in Section 1.2(b) or this Section 7.3,
each party will bear its own expenses in connection with this Agreement and the
transactions contemplated by this Agreement.
 
     7.4  Amendment. This Agreement may not be amended except in an instrument
in writing signed on behalf of all of the parties to this Agreement; provided,
however, that after approval of the Merger by the stockholders of the Company,
no amendment that would either decrease the Merger Consideration or change any
other term or condition of this Agreement, if any such change, alone or in the
aggregate, would materially and adversely affect the stockholders of the
Company, may be made without the further approval of the stockholders of the
Company; provided, further, that, after purchase of the Shares pursuant to the
Offer, no amendment may be made to Section 5.8 without the consent of the
indemnified persons.
 
     7.5  Waiver. At any time prior to the Effective Time, whether before or
after the Special Meeting, any party to this Agreement may (i) subject to the
proviso contained in Section 7.4, extend the time for the performance of any of
the obligations or other acts of any other party or parties to this Agreement,
(ii) subject to the proviso contained in Section 7.4 of this Agreement, waive
any inaccuracies in the representations and warranties contained in this
Agreement by any other applicable party or in any documents, certificate, or
writing delivered pursuant to this Agreement by any other applicable party, or
(iii) subject to the proviso contained in Section 7.4 of this Agreement, waive
compliance with any of the agreements of any other party or with any conditions
to its own obligations. Any agreement on the part of a party to this Agreement
to any such extension or waiver will be valid only if set forth in an instrument
in writing signed on behalf of such party by a duly authorized officer.
 
                                  ARTICLE VIII
 
                                 MISCELLANEOUS
 
     8.1  Survival of Representations, Warranties, and Agreements. The
representations and warranties made in this Agreement will not survive beyond
the Effective Time or the termination of this Agreement, as the case may be. No
investigation made, or information received by, any party to this Agreement will
affect any representation or warranty made by any other party to this Agreement.
The covenants and agreements of the parties to this Agreement will survive in
accordance with their terms.
 
     8.2  Brokerage Fees and Commissions. Except as disclosed in the Offer
Documents, the Company hereby represents and warrants to Parent with respect to
the Company, and Parent and Newco hereby represent and warrant to the Company
with respect to Parent or any of its subsidiaries that, no person is entitled to
receive from the Company, Parent, Newco or any of their subsidiaries, any
investment banking, brokerage, or finder's fee or fees in connection with this
Agreement or any of the transactions contemplated by this Agreement.
 
     8.3  Entire Agreement; Assignment. This Agreement, together with all the
Schedules and Annexes hereto, (a) constitutes the entire agreement between the
parties with respect to the subject matter of this Agreement and supersedes all
other prior written agreements and understandings and all prior and
contemporaneous oral agreements and understandings between the parties to this
Agreement or any of them with respect to the subject matter of this Agreement
and (b) will not be assigned by operation of law or otherwise, provided that
Parent may assign its rights and obligations under this Agreement, or those of
Newco, including, without limitation, the right to substitute in place of Newco
a subsidiary as one of the constituent corporations to the Merger as provided in
Section 2.1 to any direct or indirect subsidiary of Parent, but no such
assignment will relieve the assigning party of its obligations under this
Agreement. Any purported assignment of this Agreement not made in accordance
with this Section 8.3 will be null, void, and of no effect. No party to this
Agreement has relied upon any representation or warranty, oral or written, of
any other party to this
 
                                       16
<PAGE>   65
 
Agreement or any of their officers, directors, or stockholders except for the
representations and warranties contained in this Agreement.
 
     8.4  Severability. If any term or other provision of this Agreement is
invalid, illegal, or incapable of being enforced by any rule of law or public
policy, all other terms and provisions of this Agreement will nevertheless
remain in full force and effect. Upon any final judicial determination that any
term or other provision is invalid, illegal, or incapable of being enforced, the
parties to this Agreement will negotiate in good faith to modify this Agreement
so as to effect the original intent of the parties as closely as possible in an
acceptable manner to the end that the transactions contemplated by this
Agreement be consummated to the extent possible.
 
     8.5  Notices. All notices, requests, claims, demands and other
communications under this Agreement will be in writing and will be deemed to
have been duly given when delivered in person, by cable, telegram or telex,
facsimile or by registered or certified mail (postage prepaid, return receipt
requested) to the respective parties as follows:
 
     (a) if to Parent or Newco, to:
          Arkansas Best Corporation
        Treadco Acquisition Corporation
        3801 Old Greenwood Road
        Fort Smith, Arkansas 72903
        Attention: Richard F. Cooper
        Fax: (501) 785-6124
 
     with a copy to:
          Hughes & Luce, L.L.P.
        1717 Main Street, Suite 2800
        Dallas, Texas 75201
        Attention: Alan J. Bogdanow
        Fax: (214) 939-5849
 
     (b) if to the Company, to:
          Treadco, Inc.
        1101 South 21st Street
        Fort Smith, Arkansas 72901
        Attention: John R. Meyers
        Fax: (501) 788-6486
 
     with copies to:
          Special Committee of the Board of Directors
        Treadco, Inc.
        1101 South 21st Street
        Fort Smith, Arkansas 72901
        Attention: Robert B. Gilbert and Nicolas M. Georgitsis
        Fax: (501) 788-6486
 
     and
          Kutak Rock
        Suite 1100
        425 West Capitol Avenue
        Little Rock, Arkansas 72201-3409
        Attention: Richard N. Massey
        Fax: (501) 975-3001
 
or to such other address as the person to whom notice is given may have
previously furnished to the others in writing in the manner set forth above
(provided that notice of any change of address will be effective only upon
receipt).
                                       17
<PAGE>   66
 
     8.6  Governing Law. This Agreement will be governed by and construed in
accordance with the laws of the State of Delaware, regardless of the laws that
might otherwise govern under applicable principles of conflict of laws.
 
     8.7  Specific Performance. Each of the parties to this Agreement
acknowledges and agrees that the other parties to this Agreement would be
irreparably damaged in the event any of the provisions of this Agreement were
not performed in accordance with their specific terms or were otherwise
breached. Accordingly, each of the parties to this Agreement agrees that each of
them will be entitled to an injunction or injunctions to prevent breaches of the
provisions of this Agreement and to enforce specifically this Agreement and the
terms and provisions of this Agreement in any action instituted in any court of
the United States or any state having subject matter jurisdiction, in addition
to any other remedy to which such party may be entitled, at law or in equity.
 
     8.8  Other Potential Bidders. The Company, its affiliates, and their
respective officers, directors, employees, representatives, and agents will
immediately cease any existing discussions or negotiations, if any, with any
person or group conducted heretofore with respect to any acquisition of all or
any material portion of the assets of, or any equity interest in, the Company or
any business combination with the Company. The Company may, directly or
indirectly, furnish information and access, in each case only in response to
unsolicited requests therefor, to any person or group made after the date of
this Agreement that was not encouraged, solicited, or initiated by the Company
or any of its affiliates, or their respective officers, directors, agents, or
representatives after the date of this Agreement, pursuant to appropriate
confidentiality agreements, and may participate in discussions and negotiate
with such person or group concerning any merger, sale of assets, sale of shares
of capital stock, or similar transaction involving the Company, if such person
or group has submitted a written proposal to the Special Committee or the Board
relating to any such transaction and failing to take such action would
constitute a breach of fiduciary duty under applicable law. The Special
Committee or the Board will provide a written copy of such proposal to Parent
immediately after receipt and will keep Parent promptly advised of any
development with respect to such matters. Except as set forth above, neither the
Company nor any of its affiliates, nor any of its or their respective officers,
directors, employees, representatives, or agents, will, directly or indirectly,
for the account of the Company or for their own account, encourage, solicit,
participate in, or initiate discussions or negotiations with, or provide any
information to, any person or group (other than Parent and Newco, any affiliate
of Parent and Newco, or any designees of Parent and Newco) concerning any
merger, sale of assets, sale of shares of capital stock, or similar transaction
involving the Company; provided, however, that nothing in this Agreement will
prevent the Board from taking, and disclosing to the stockholders of the
Company, a position contemplated by Rules 14d-9 and 14e-2 promulgated under the
Exchange Act with regard to any tender offer; provided, further, that the
Special Committee and the Board will not recommend that the stockholders of the
Company tender their Shares in connection with any such tender offer unless
failing to take such action would constitute a breach of fiduciary duty under
applicable law. The Company will not waive, or release any person from, any
provision of any confidentiality or standstill agreement to which the Company is
a party.
 
     8.9  Descriptive Headings; References. The descriptive headings in this
Agreement are inserted for convenience of reference only and are not intended to
be part of or to affect the meaning or interpretation of this Agreement.
References in this Agreement to Sections, Annexes, and Schedules are references
to the Sections, Annexes, and Schedules of this Agreement unless the context
indicates otherwise.
 
     8.10  Parties in Interest. This Agreement will be binding upon and inure
solely to the benefit of each party to this Agreement, and, except as provided
in Sections 5.8 and 8.11, nothing in this Agreement, express or implied, is
intended to confer upon any other person any rights or remedies of any nature
whatsoever under or by reason of this Agreement.
 
     8.11  Beneficiaries. Parent hereby acknowledges that Section 5.8 is
intended to benefit the indemnified parties referred to in Section 5.8, any of
whom will be entitled to enforce Section 5.8 against the Surviving Corporation
or the Company, as the case may be.
 
     8.12  Counterparts. This Agreement may be executed in any number of
counterparts, each of which will be deemed to be an original, but all of which
will constitute one and the same agreement.
                                       18
<PAGE>   67
 
     8.13  Obligations. Parent will perform or cause Newco to perform all of the
obligations of Newco under this Agreement, including consummation of the Merger,
in accordance with the terms of this Agreement.
 
     8.14  Certain Definitions. For the purposes of this Agreement: (a) the term
"subsidiary" means each person in which a person owns or controls, directly or
through one or more subsidiaries, 50 percent or more of the stock or other
interests having general voting power in the election of directors or persons
performing similar functions or more than 50% of the equity interests; (b) the
term "person" will be broadly construed to include any individual, corporation,
company, partnership, trust, joint stock company, association, or other private
or governmental entity; (c) the term "group" has the meaning given in
sec.13(d)(3) of the Exchange Act; (d) the term "affiliate" has the meaning given
in Rule 144(a)(1) under the Securities Act; (e) the term "business day" has the
meaning given in Rule 14d-1(c)(6) under the Exchange Act; and (f) the term
"knowledge" or "knows" or words of similar import mean (i) with respect to
Parent, the actual knowledge of its executive officers and its officers or
employees who are officers or directors of the Company, without inquiry or
investigation and (ii) with respect to the Special Committee or the Company, the
actual knowledge of the members of the Special Committee, without inquiry or
investigation.
 
     IN WITNESS WHEREOF, each of the parties to this Agreement has caused this
Agreement to be executed on its behalf by its duly authorized officers, all as
of the day and year first above written.
 
                                            ARKANSAS BEST CORPORATION
 
                                            By:  /s/ ROBERT A. YOUNG, III
                                              ----------------------------------
                                                     Robert A. Young, III
                                                      President and CEO
 
                                            TREADCO ACQUISITION CORPORATION
 
                                            By:  /s/ ROBERT A. YOUNG, III
                                              ----------------------------------
                                                     Robert A. Young, III
                                                           Chairman
 
                                            TREADCO, INC.
 
                                            By:     /s/ JOHN R. MEYERS
                                              ----------------------------------
                                                        John R. Meyers
                                                      President and CEO
 
                                       19
<PAGE>   68
 
                                    Annex A
 
     Terms used in this Annex A have the meanings ascribed to them in the
Agreement and Plan of Merger dated as of March 15, 1999 (the "Merger
Agreement").
 
     Notwithstanding any other provisions of the Offer, Parent will not be
required to accept for payment or (subject to any applicable rules and
regulations of the SEC, including Rule 14e-l(c) relating to the obligation of
Parent to pay for or return tendered Shares promptly after the termination or
withdrawal of the Offer) to pay for tendered Shares, or may terminate or amend
the Offer as provided in the Agreement, or may postpone the acceptance for
payment of, or payment for, Shares (whether or not any other Shares have been
accepted for payment or paid for pursuant to the Offer) if prior to the
expiration of the Offer (i) the Minimum Condition has not been satisfied; (ii)
the waiting period under the HSR Act has not expired or been terminated with
respect to purchase of the Shares; or (iii) if at any time on or after the date
of the Merger Agreement, and at any time before the time of acceptance for
payment of any such Shares, any of the following occurs:
 
     (a) any of the representations or warranties of the Company contained in
the Merger Agreement is not true and correct at and as of any date prior to the
expiration date of the Offer as if made at and as of such time, except for (i)
failures to be true and correct as would not have a Company Material Adverse
Effect or were known to Parent as of the date of the Merger Agreement; and (ii)
failures to comply as are capable of being and are cured prior to the earlier of
(A) 10 days after written notice from Parent to the Company of such failure or
(B) two business days prior to the expiration date of the Offer;
 
     (b) the Company has failed to comply with any of its obligations under the
Merger Agreement, except for (i) failures to so comply as would not have a
Company Material Adverse Effect or were known to Parent as of the date of the
Merger Agreement; and (ii) failures to comply as are capable of being and are
cured prior to the earlier of (A) 10 days after written notice from Parent to
the Company of such failure or (B) two business days prior to the expiration
date of the Offer;
 
     (c) the Special Committee or the Board has withdrawn or modified in any
respect adverse to Parent its recommendation of the Offer or taken any position
inconsistent with such recommendation;
 
     (d) the Merger Agreement has been terminated in accordance with its terms;
 
     (e) the Company has reached an agreement with Parent that the Offer or the
Merger be terminated or amended;
 
     (f) any state, federal, or foreign government, or governmental authority
has taken any action, or proposed, sought, promulgated, or enacted, or any
state, federal, or foreign government or governmental authority or court has
entered, enforced, or deemed applicable to the Offer or the Merger, any statute,
rule, regulation, judgment, order, or injunction that would (i) make the
acceptance for payment of, the payment for, or the purchase of, some or all of
the Shares illegal or otherwise restrict, materially delay, prohibit
consummation of, or make materially more costly, the Offer or the Merger, (ii)
result in a material delay in or restrict the ability of Parent, or render
Parent unable, to accept for payment, pay for or purchase some or all of the
Shares in the Offer, (iii) require the divestiture by Parent, Newco, or the
Company or any of their respective subsidiaries or affiliates of all or any
material portion of the business, assets, or property of any of them or any
Shares, or impose any material limitation on the ability of any of them to
conduct their business and own such assets, properties, and Shares, (iv) impose
material limitations on the ability of Parent to hold or to exercise effectively
all rights of ownership of the Shares, including the right to vote any Shares on
all matters properly presented to the stockholders of the Company, or (v) impose
any limitations on the ability of Parent, Newco, or any of their respective
subsidiaries or affiliates effectively to control in any material respect the
business or operations of the Company, Parent, Newco, or any of their respective
subsidiaries or affiliates;
 
     (g) any change (or any condition, event or development involving a
prospective change) has occurred or been threatened in the business, properties,
assets, liabilities, capitalization, stockholders' equity, financial condition,
operations, licenses or franchises results of operations, or prospects of the
Company, that would have a Company Material Adverse Effect;
<PAGE>   69
 
     (h) there has occurred (i) any general suspension of trading in, or
limitation on prices for, securities on any national securities exchange or in
the over-the-counter market or quotations for shares traded thereon as reported
by the Nasdaq or otherwise, (ii) a declaration of a banking moratorium or any
suspension of payments in respect of banks in the United States (whether or not
mandatory), (iii) any limitation (whether or not mandatory) by any governmental
authority on the extension of credit by banks or other financial institutions,
(iv) after the date of the Merger Agreement, an aggregate decline of at least
25% in the Dow Jones Industrial Average or Russell 2000 Index or a decline in
either such index of 12 1/2% in any 24-hour period, or (v) in the case of any of
the occurrences referred to in clauses (i) through (iv) existing at the time of
the commencement of the Offer, in the reasonable judgment of Parent, a material
acceleration or worsening thereof; or
 
     (i) any approval, permit, authorization, consent, or waiting period of any
domestic or foreign, governmental, administrative, or regulatory entity
(federal, state, local, provincial or otherwise) has not been obtained or
satisfied on terms satisfactory to Parent in its reasonable discretion and the
failure to obtain such consent, approval or authorization would have a Parent or
Company Material Adverse Effect;
 
that, in the good faith judgment of Parent and regardless of the circumstances
(including any action or inaction by Parent, or any of its affiliates) giving
rise to any such condition, makes it inadvisable to proceed with the Offer or
with such acceptance for payment of, or payment for, Shares or to proceed with
the Merger.
 
     The foregoing conditions are for the sole benefit of Parent and may be
asserted by Parent regardless of the circumstances giving rise to any such
condition or may be waived by Parent in whole or in part at any time and from
time to time in its sole discretion (subject to the terms of the Merger
Agreement). The failure by Parent at any time to exercise any of the foregoing
rights will not be deemed a waiver of any such right, the waiver of any such
right with respect to particular facts and circumstances will not be deemed to
waiver with respect to any other facts or circumstances, and each such right
will be deemed an ongoing right that may be asserted at any time and from time
to time.
<PAGE>   70
 
                                                                         ANNEX C
 
              DIRECTORS AND EXECUTIVE OFFICERS OF PARENT AND NEWCO
 
     1. DIRECTORS AND EXECUTIVE OFFICERS OF PARENT. The name, business address,
present principal occupation or employment and five-year employment history of
each of the directors and executive officers of Parent are set forth below.
Unless otherwise indicated, the business address of each such director and each
such executive officer is 3801 Greenwood Road, Fort Smith, Arkansas 72903.
Unless otherwise indicated below, each occupation set forth opposite an
individual's name refers to employment with Parent. All directors and executive
officers listed below are citizens of the United States.
 
<TABLE>
<CAPTION>
                                         POSITION WITH PARENT; PRINCIPAL OCCUPATION OR EMPLOYMENT;
      NAME AND BUSINESS ADDRESS               5-YEAR EMPLOYMENT HISTORY; OUTSIDE DIRECTORSHIPS
      -------------------------          ---------------------------------------------------------
<S>                                     <C>
Frank Edelstein......................   Mr. Edelstein, age 73, has been a Director of Parent since
                                        November 1988. Mr. Edelstein currently provides consulting
                                        services to Stonecreek Capital. Mr. Edelstein served as a
                                        Vice President of Kelso & Company, Inc. from 1986 to March
                                        1992. Prior to 1986, he served as Chairman and President of
                                        International Central Bank & Trust Company and CPI Pension
                                        Services, Inc., as well as Senior Vice President, Financial
                                        Services Group, at Continental Insurance Corporation. He
                                        also has held positions as Corporate Vice President,
                                        Automatic Data Processing, Inc. and Executive Vice President
                                        of Olivetti Corporation of America. Mr. Edelstein also is a
                                        Director of Ceradyne, Inc., and IHOP Corp.
Robert A. Young, III.................   Mr. Young, age 58, has been a Director of Parent since 1970
                                        and Chief Executive Officer of Parent since August 1988,
                                        President since 1973 and was Chief Operating Officer from
                                        1973 to 1988. Mr. Young has been a Director of the Company
                                        since June 1991. Mr. Young has been the President and a
                                        Director of Newco since it was formed in February 1999. Mr.
                                        Young also is a Director of Mosler, Inc.
William A. Marquard..................   Mr. Marquard, age 79, has been Chairman of the Board and a
                                        Director of Parent since November 1988 and a Director of the
                                        Company since June 1991. In April 1992, Mr. Marquard was
                                        elected as a Director of the Board of Kelso & Company, Inc.
                                        From 1971 to 1983, Mr. Marquard was President and Chief
                                        Executive Officer of American Standard Inc. and from 1979 to
                                        1985, he was Chairman of the Board of American Standard Inc.
                                        Mr. Marquard resumed his position as Chairman of the Board
                                        of American Standard Inc. in February 1989 until March 31,
                                        1992 when he was named Chairman Emeritus. Mr. Marquard also
                                        became Chairman of the Board of ASI Holding Corporation in
                                        February 1989 until March 31, 1992, when he was named
                                        Chairman Emeritus. Mr. Marquard is Chairman of the Board of
                                        Mosler, Inc., and a Director of Earle M. Jorgensen Co., and
                                        EarthShell Container Corporation.
</TABLE>
 
                                       C-1
<PAGE>   71
 
<TABLE>
<CAPTION>
                                         POSITION WITH PARENT; PRINCIPAL OCCUPATION OR EMPLOYMENT;
      NAME AND BUSINESS ADDRESS               5-YEAR EMPLOYMENT HISTORY; OUTSIDE DIRECTORSHIPS
      -------------------------          ---------------------------------------------------------
<S>                                     <C>
Alan J. Zakon, Ph.D..................   Dr. Zakon, age 62, has been a Director of Parent since
                                        February 1993. Dr. Zakon was a Managing Director of Bankers
                                        Trust Company through March, 1995, for which he previously
                                        served as Chairman, Strategic Policy Committee from 1989 to
                                        1990. From 1980 to 1986, Dr. Zakon was President of Boston
                                        Consulting Group before being named its Chairman in 1986,
                                        having previously served as Consultant from 1967 to 1969 and
                                        Vice President from 1969 to 1980. Dr. Zakon is currently
                                        serving as a member of the Board of Directors of several
                                        companies, including MicroFinancial, and Chairman of the
                                        Executive Committee of the Board of Autotote Corporation,
                                        and is a former member of the Advisory Committee to the
                                        Stanford University Graduate School of Business.
Arthur J. Fritz, Jr..................   Mr. Fritz, 58, has been a Director of Parent since April
                                        1989. From 1971 to 1986, Mr. Fritz was President of Fritz
                                        Companies, Inc. and its Chairman from 1986 to 1988. Mr.
                                        Fritz has served as Chairman of JABAR Enterprises since
                                        October 1988 and is a Director of Intercargo Corporation.
                                        Mr. Fritz is former President and Chairman of the National
                                        Association of Customs Brokers and Freight Forwarders of
                                        America.
John H. Morris.......................   Mr. Morris, 55, has been a Director of Parent since July
                                        1988 and a Director of the Company since June 1991. Mr.
                                        Morris currently serves as Co-Chairman of Stonecreek
                                        Capital. Mr. Morris is a Director of Outsourcing Services
                                        Group and Steelhorse Holdings, Inc. Mr. Morris served as a
                                        Managing Director of Kelso & Company, Inc. from March 1989
                                        to March 1992, was a General Partner from 1987 to March
                                        1989, and prior to 1987 was a Vice President. Prior to 1985,
                                        Mr. Morris was President of LBO Capital Corp. In February
                                        1997, Merchant's Transportation & Logistics Company, and its
                                        subsidiaries, filed petitions under Chapter 11 of the
                                        federal bankruptcy laws. Mr. Morris served as a Director of
                                        such entities through January 1997 and briefly served as the
                                        President of such entities for about a two-week period in
                                        November 1995 before these entities became operating
                                        companies.
Lary R. Scott........................   Mr. Scott, age 62, was appointed Parent's Executive Vice
                                        President in December 1995. Prior to its June 1997 merger
                                        into Parent, he was Chairman of the Board of WorldWay
                                        Corporation commencing in May 1994 and Vice Chairman and
                                        Chief Executive Officer of WorldWay commencing in 1993.
                                        WorldWay became a wholly owned subsidiary of Parent in
                                        August 1995; prior to that, it was a publicly traded
                                        company. For approximately two years prior to joining
                                        WorldWay, Mr. Scott served as a transportation consultant.
                                        Prior to that time, he was President and Chief Executive
                                        Officer of Consolidated Freightways, Inc. Mr. Scott serves
                                        on the board of directors of The Clorox Company.
</TABLE>
 
                                       C-2
<PAGE>   72
 
<TABLE>
<CAPTION>
                                         POSITION WITH PARENT; PRINCIPAL OCCUPATION OR EMPLOYMENT;
      NAME AND BUSINESS ADDRESS               5-YEAR EMPLOYMENT HISTORY; OUTSIDE DIRECTORSHIPS
      -------------------------          ---------------------------------------------------------
<S>                                     <C>
David E. Loeffler....................   Mr. Loeffler, age 52, was appointed Vice President -- Chief
                                        Financial Officer and Treasurer of Parent and the Company in
                                        April 1997. From December 1995 to April 1997, he was the
                                        Vice President -- Treasurer of Parent and Treasurer of the
                                        Company. From 1992 to 1995, Mr. Loeffler was a private
                                        investor and in investment management. From 1983 to 1992, he
                                        was Senior Vice President -- Finance and Administration and
                                        Chief Financial Officer for Yellow Freight System, Inc. Mr.
                                        Loeffler has been the Vice President and Treasurer and a
                                        Director of Newco since it was formed in February 1999.
Richard F. Cooper....................   Mr. Cooper, age 47, has been Vice
                                        President -- Administration since 1995, Vice
                                        President -- Risk Management of Parent from April 1991 to
                                        1995 and Vice President -- General Counsel since 1986. Mr.
                                        Cooper has been Secretary since 1987. Mr. Cooper has been
                                        Secretary of the Company since June 1991. Mr. Cooper also
                                        has been Vice President and Secretary and a Director of
                                        Newco since it was formed in February 1999.
J. Lavon Morton......................   Mr. Morton, age 48, was appointed Vice
                                        President -- Financial Reporting of Parent and of the
                                        Company in May 1997. Mr. Morton joined Parent as Assistant
                                        Treasurer in December 1996. From October 1984 until November
                                        1996, Mr. Morton was a Partner in Ernst & Young LLP. From
                                        1972 until 1984, Mr. Morton was employed by Ernst & Young
                                        LLP. Mr. Morton is a Certified Public Accountant.
Judy R. McReynolds...................   Ms. McReynolds, age 36, was appointed Controller of Parent
                                        in July 1998. Ms. McReynolds joined Parent as Director of
                                        Corporate Accounting in June 1997. During the period of June
                                        1995 through May 1997, Ms. McReynolds was employed as
                                        Director of Financial Reporting and Taxation with P.A.M.
                                        Transportation Services, Inc. From December 1990 until June
                                        1995, Ms. McReynolds was a senior manager employed with
                                        Ernst & Young LLP. Ms. McReynolds is a Certified Public
                                        Accountant.
Jerry A. Yarbrough...................   Mr. Yarbrough, age 60, has been Senior Vice
                                        President -- Corporate Development of the Parent since April
                                        1998. From January 1995 through March 1998, Mr. Yarbrough
                                        was Chairman of Integrated Distribution, Inc. and Best
                                        Logistics, Inc. From 1979 through 1994, Mr. Yarbrough was
                                        ABF Freight System, Inc.'s Senior Vice President --
                                        Operations and President of Data-Tronics Corp., a Parent
                                        subsidiary.
</TABLE>
 
     2. DIRECTORS AND EXECUTIVE OFFICERS OF NEWCO. The name, business address,
present principal occupation or employment and five-year employment history of
each of the directors and executive officers of Newco are set forth below.
Unless otherwise indicated, the business address of each such director and each
such executive officer is 3801 Greenwood Road, Fort Smith, Arkansas 72903.
Unless otherwise indicated below, each occupation set forth opposite an
individual's name refers to employment with Newco. All directors and executive
officers listed below are citizens of the United States.
 
<TABLE>
<CAPTION>
                                          POSITION WITH NEWCO; PRINCIPAL OCCUPATION OR EMPLOYMENT
      NAME AND BUSINESS ADDRESS               5-YEAR EMPLOYMENT HISTORY; OUTSIDE DIRECTORSHIPS
      -------------------------           -------------------------------------------------------
<S>                                     <C>
Robert A. Young, III.................   See above.
David E. Loeffler....................   See above.
Richard F. Cooper....................   See above.
</TABLE>
 
                                       C-3
<PAGE>   73
 
                                                                         ANNEX D
 
                DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY
 
     The name, business address, present principal occupation or employment and
five-year employment history of each of the directors and executive officers of
the Company are set forth below. The business address of each such director and
executive officer is 1101 South 21st Street, Fort Smith, Arkansas 72501. Unless
otherwise indicated below, each occupation set forth opposite an individual's
name refers to employment with the Company. All such directors and executive
officers listed below are citizens of the United States.
 
<TABLE>
<CAPTION>
                                             POSITION WITH THE COMPANY; PRINCIPAL OCCUPATION OR EMPLOYMENT;
NAME AND BUSINESS ADDRESS                           5-YEAR EMPLOYMENT HISTORY; OUTSIDE DIRECTORSHIPS
- -------------------------                    --------------------------------------------------------------
<S>                                          <C>
Robert B. Gilbert.........................   Mr. Gilbert, age 74, has been a Director of the Company since
                                             December 1991. From April 1985 to February 1991, Mr. Gilbert
                                             was President and Chief Executive Officer of Rheem
                                             Manufacturing Co. Since his February 1991 retirement, Mr.
                                             Gilbert has been an independent consultant.
Nicolas M. Georgitsis.....................   Mr. Georgitsis, age 63, has been a Director of the Company
                                             since it was formed in June 1991. Mr. Georgitsis has been an
                                             independent consultant since January 1991. From February 1986
                                             to January 1991, Mr. Georgitsis was Senior Vice President of
                                             American Standard Inc. in charge of Transportation Products.
                                             Mr. Georgitsis is a Director of Mosler, Inc., and member of
                                             the Operating Board of Trust Company of the West (Latin
                                             America Fund).
John R. Meyers............................   Mr. Meyers, age 51, was appointed the Company's President --
                                             Chief Executive Officer in October 1995. Mr. Meyers served as
                                             Treasurer of the Company from June 1991 through October 1995.
                                             From 1979 through 1995 Mr. Meyers served as Vice President --
                                             Treasurer of Parent.
Daniel V. Evans...........................   Mr. Evans, age 51, has served as Executive Vice President --
                                             Chief Operating Officer since October 1995, and served as Vice
                                             President -- Administration of the Company from June 1991
                                             through October 1995. Mr. Evans served as Vice President --
                                             Administration of ABC-Treadco, Inc. from 1989 to 1991, and
                                             served as Director of Administration from 1977 to 1989.
William A. Marquard.......................   See ANNEX C.
Robert A. Young, III......................   See ANNEX C.
John H. Morris............................   See ANNEX C.
David E. Loeffler.........................   See ANNEX C.
Richard F. Cooper.........................   See ANNEX C.
J. Lavon Morton...........................   See ANNEX C.
</TABLE>
 
                                       D-1
<PAGE>   74
 
                                                                         ANNEX E
 
               DELAWARE GENERAL CORPORATION LAW APPRAISAL RIGHTS
 
sec. 262. Appraisal rights.
 
     (a) Any stockholder of a corporation of this State who holds shares of
stock on the date of the making of a demand pursuant to subsection (d) of this
section with respect to such shares, who continuously holds such shares through
the effective date of the merger or consolidation, who has otherwise complied
with subsection (d) of this section and who has neither voted in favor of the
merger or consolidation nor consented thereto in writing pursuant to sec. 228 of
this title shall be entitled to an appraisal by the Court of Chancery of the
fair value of the stockholder's shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section,
the word "stockholder" means a holder of record of stock in a stock corporation
and also a member of record of a nonstock corporation; the words "stock" and
"share" mean and include what is ordinarily meant by those words and also
membership or membership interest of a member of a nonstock corporation; and the
words "depository receipt" mean a receipt or other instrument issued by a
depository representing an interest in one or more shares, or fractions thereof,
solely of stock of a corporation, which stock is deposited with the depository.
 
     (b) Appraisal rights shall be available for the shares of any class or
series of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to sec. 251 (other than a merger effected pursuant to
sec. 251(g) of this title), sec. 252, sec. 254, sec. 257, sec. 258, sec. 263 or
sec. 264 of this title:
 
          (1) Provided, however, that no appraisal rights under this section
     shall be available for the shares of any class or series of stock, which
     stock, or depository receipts in respect thereof, at the record date fixed
     to determine the stockholders entitled to receive notice of and to vote at
     the meeting of stockholders to act upon the agreement of merger or
     consolidation, were either (i) listed on a national securities exchange or
     designated as a national market system security on an interdealer quotation
     system by the National Association of Securities Dealers, Inc. or (ii) held
     of record by more than 2,000 holders; and further provided that no
     appraisal rights shall be available for any shares of stock of the
     constituent corporation surviving a merger if the merger did not require
     for its approval the vote of the stockholders of the surviving corporation
     as provided in subsection (f) of sec. 251 of this title.
 
          (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
     under this section shall be available for the shares of any class or series
     of stock of a constituent corporation if the holders thereof are required
     by the terms of an agreement of merger or consolidation pursuant to
     sec.sec. 251, 252, 254, 257, 258, 263 and 264 of this title to accept for
     such stock anything except:
 
             a. Shares of stock of the corporation surviving or resulting from
        such merger or consolidation, or depository receipts in respect thereof;
 
             b. Shares of stock of any other corporation, or depository receipts
        in respect thereof, which shares of stock (or depository receipts in
        respect thereof) or depository receipts at the effective date of the
        merger or consolidation will be either listed on a national securities
        exchange or designated as a national market system security on an
        interdealer quotation system by the National Association of Securities
        Dealers, Inc. or held of record by more than 2,000 holders;
 
             c. Cash in lieu of fractional shares or fractional depository
        receipts described in the foregoing subparagraphs a. and b. of this
        paragraph; or
 
             d. Any combination of the shares of stock, depository receipts and
        cash in lieu of fractional shares or fractional depository receipts
        described in the foregoing subparagraphs a., b. and c. of this
        paragraph.
 
          (3) In the event all of the stock of a subsidiary Delaware corporation
     party to a merger effected under sec. 253 of this title is not owned by the
     parent corporation immediately prior to the merger, appraisal rights shall
     be available for the shares of the subsidiary Delaware corporation.
 
                                       E-1
<PAGE>   75
 
     (c) Any corporation may provide in its certificate of incorporation that
appraisal rights under this section shall be available for the shares of any
class or series of its stock as a result of an amendment to its certificate of
incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation. If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.
 
     (d) Appraisal rights shall be perfected as follows:
 
          (1) If a proposed merger or consolidation for which appraisal rights
     are provided under this section is to be submitted for approval at a
     meeting of stockholders, the corporation, not less than 20 days prior to
     the meeting, shall notify each of its stockholders who was such on the
     record date for such meeting with respect to shares for which appraisal
     rights are available pursuant to subsection (b) or (c) hereof that
     appraisal rights are available for any or all of the shares of the
     constituent corporations, and shall include in such notice a copy of this
     section. Each stockholder electing to demand the appraisal of his shares
     shall deliver to the corporation, before the taking of the vote on the
     merger or consolidation, a written demand for appraisal of his shares. Such
     demand will be sufficient if it reasonably informs the corporation of the
     identity of the stockholder and that the stockholder intends thereby to
     demand the appraisal of his shares. A proxy or vote against the merger or
     consolidation shall not constitute such a demand. A stockholder electing to
     take such action must do so by a separate written demand as herein
     provided. Within 10 days after the effective date of such merger or
     consolidation, the surviving or resulting corporation shall notify each
     stockholder of each constituent corporation who has complied with this
     subsection and has not voted in favor of or consented to the merger or
     consolidation of the date that the merger or consolidation has become
     effective; or
 
          (2) If the merger or consolidation was approved pursuant to sec. 228
     or sec. 253 of this title, each constituent corporation, either before the
     effective date of the merger or consolidation or within ten days
     thereafter, shall notify each of the holders of any class or series of
     stock of such constituent corporation who are entitled to appraisal rights
     of the approval of the merger or consolidation and that appraisal rights
     are available for any or all shares of such class or series of stock of
     such constituent corporation, and shall include in such notice a copy of
     this section; provided that, if the notice is given on or after the
     effective date of the merger or consolidation, such notice shall be given
     by the surviving or resulting corporation to all such holders of any class
     or series of stock of a constituent corporation that are entitled to
     appraisal rights. Such notice may, and, if given on or after the effective
     date of the merger or consolidation, shall, also notify such stockholders
     of the effective date of the merger or consolidation. Any stockholder
     entitled to appraisal rights may, within 20 days after the date of mailing
     of such notice, demand in writing from the surviving or resulting
     corporation the appraisal of such holder's shares. Such demand will be
     sufficient if it reasonably informs the corporation of the identity of the
     stockholder and that the stockholder intends thereby to demand the
     appraisal of such holder's shares. If such notice did not notify
     stockholders of the effective date of the merger or consolidation, either
     (i) each such constituent corporation shall send a second notice before the
     effective date of the merger or consolidation notifying each of the holders
     of any class or series of stock of such constituent corporation that are
     entitled to appraisal rights of the effective date of the merger or
     consolidation or (ii) the surviving or resulting corporation shall send
     such a second notice to all such holders on or within 10 days after such
     effective date; provided, however, that if such second notice is sent more
     than 20 days following the sending of the first notice, such second notice
     need only be sent to each stockholder who is entitled to appraisal rights
     and who has demanded appraisal of such holder's shares in accordance with
     this subsection. An affidavit of the secretary or assistant secretary or of
     the transfer agent of the corporation that is required to give either
     notice that such notice has been given shall, in the absence of fraud, be
     prima facie evidence of the facts stated therein. For purposes of
     determining the stockholders entitled to receive either notice, each
     constituent corporation may fix, in advance, a record date that shall be
     not more than 10 days prior to the date the notice is given, provided, that
     if the notice is given on or after the effective date of the merger or
     consolidation, the record date shall be such effective date. If no record
     date is fixed and the notice is given prior to the effective date, the
     record date shall be the close of business on the day next preceding the
     day on which the notice is given.
 
                                       E-2
<PAGE>   76
 
     (e) Within 120 days after the effective date of the merger or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with subsections (a) and (d) hereof and who is otherwise entitled to
appraisal rights, may file a petition in the Court of Chancery demanding a
determination of the value of the stock of all such stockholders.
Notwithstanding the foregoing, at any time within 60 days after the effective
date of the merger or consolidation, any stockholder shall have the right to
withdraw his demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
his written request for such a statement is received by the surviving or
resulting corporation or within 10 days after expiration of the period for
delivery of demands for appraisal under subsection (d) hereof, whichever is
later.
 
     (f) Upon the filing of any such petition by a stockholder, service of a
copy thereof shall be made upon the surviving or resulting corporation, which
shall within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation. If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list. The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein stated. Such notice shall also be given by 1 or more publications at
least 1 week before the day of the hearing, in a newspaper of general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems advisable. The forms of the notices by mail and by publication
shall be approved by the Court, and the costs thereof shall be borne by the
surviving or resulting corporation.
 
     (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights. The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as to
such stockholder.
 
     (h) After determining the stockholders entitled to an appraisal, the Court
shall appraise the shares, determining their fair value exclusive of any element
of value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors, including the rate of
interest which the surviving or resulting corporation would have had to pay to
borrow money during the pendency of the proceeding. Upon application by the
surviving or resulting corporation or by any stockholder entitled to participate
in the appraisal proceeding, the Court may, in its discretion, permit discovery
or other pretrial proceedings and may proceed to trial upon the appraisal prior
to the final determination of the stockholder entitled to an appraisal. Any
stockholder whose name appears on the list filed by the surviving or resulting
corporation pursuant to subsection (f) of this section and who has submitted his
certificates of stock to the Register in Chancery, if such is required, may
participate fully in all proceedings until it is finally determined that he is
not entitled to appraisal rights under this section.
 
     (i) The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto. Interest may be simple or compound, as the Court
may direct. Payment shall be so made to each such stockholder, in the case of
holders of uncertificated stock forthwith, and the case of holders of shares
represented by certificates upon the surrender to the corporation of the
certificates representing such stock. The Court's decree may be enforced as
                                       E-3
<PAGE>   77
 
other decrees in the Court of Chancery may be enforced, whether such surviving
or resulting corporation be a corporation of this State or of any state.
 
     (j) The costs of the proceeding may be determined by the Court and taxed
upon the parties as the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.
 
     (k) From and after the effective date of the merger or consolidation, no
stockholder who has demanded his appraisal rights as provided in subsection (d)
of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to the surviving or resulting corporation a written withdrawal of his demand for
an appraisal and an acceptance of the merger or consolidation, either within 60
days after the effective date of the merger or consolidation as provided in
subsection (e) of this section or thereafter with the written approval of the
corporation, then the right of such stockholder to an appraisal shall cease.
Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery
shall be dismissed as to any stockholder without the approval of the Court, and
such approval may be conditioned upon such terms as the Court deems just.
 
     (l) The shares of the surviving or resulting corporation to which the
shares of such objecting stockholders would have been converted had they
assented to the merger or consolidation shall have the status of authorized and
unissued shares of the surviving or resulting corporation.
 
                                       E-4
<PAGE>   78
 
                        The Depositary for the Offer is:
 
                        HARRIS TRUST COMPANY OF NEW YORK
 
<TABLE>
<S>                                            <C>
 
          By Hand/Overnight Courier:                              By Mail:
                Receive Window                              Wall Street Station
              Wall Street Plaza                                P.O. Box 1023
          88 Pine Street, 19th Floor                   New York, New York 10268-1023
           New York, New York 10005
</TABLE>
 
                                 By Facsimile:
 
                                 (212) 701-7636
 
                             Confirm by Telephone:
 
                                 (212) 701-7624
 
     Questions and requests for assistance or for additional copies of this
Offer to Purchase, the Letter of Transmittal and the Notice of Guaranteed
Delivery may be directed to the Information Agent at the telephone numbers and
location listed below. You may also contact your broker, dealer, bank, trust
company or other nominee for assistance concerning the Offer.
 
                    The Information Agent for the Offer is:
 
                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
                 Banks and Brokers Call Collect: (212) 269-5550
                    All Others Call Toll Free (800) 829-6554

<PAGE>   1
 
                             LETTER OF TRANSMITTAL
                        TO TENDER SHARES OF COMMON STOCK
            (INCLUDING THE ASSOCIATED COMMON STOCK PURCHASE RIGHTS)
                                       OF
 
                                 TREADCO, INC.
             PURSUANT TO THE OFFER TO PURCHASE DATED MARCH 23, 1999
                                       BY
 
                           ARKANSAS BEST CORPORATION
- --------------------------------------------------------------------------------
         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
        NEW YORK CITY TIME, ON TUESDAY, APRIL 20, 1999, UNLESS EXTENDED.
- --------------------------------------------------------------------------------
 
                        The Depositary for the Offer is:
 
                        HARRIS TRUST COMPANY OF NEW YORK
 
<TABLE>
<S>                                             <C>
                   By Mail:                              By Hand/Overnight Delivery:
             Wall Street Station                                Receive Window
                P.O. Box 1023                                 Wall Street Plaza
        New York, New York 10268-1023                     88 Pine Street, 19th Floor
                                                           New York, New York 10005
</TABLE>
 
                                 By Facsimile:
                                 (212) 701-7636
 
                             Confirm by Telephone:
                                 (212) 701-7624
 
         DELIVERY OF THIS INSTRUMENT TO AN ADDRESS, OR TRANSMISSION OF
      INSTRUCTIONS VIA A FACSIMILE NUMBER, OTHER THAN AS SET FORTH ABOVE,
                     DOES NOT CONSTITUTE A VALID DELIVERY.
 
       THE INSTRUCTIONS SET FORTH IN THIS LETTER OF TRANSMITTAL SHOULD BE
         READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.
 
     This Letter of Transmittal is to be used either if certificates are to be
forwarded herewith or, unless an Agent's Message (as defined in "THE TENDER
OFFER -- Procedure for Tendering Shares" of the Offer to Purchase) is utilized,
if delivery of Shares (as defined below) is to be made by book-entry transfer to
the account maintained by the Depositary at the Book-Entry Transfer Facility as
defined in and pursuant to the procedures set forth in "THE TENDER
OFFER -- Procedure for Tendering Shares" of the Offer to Purchase. Stockholders
who deliver Shares by book-entry transfer are referred to herein as "Book-Entry
Stockholders" and other stockholders are referred to herein as "Certificate
Stockholders." Stockholders whose certificates for Shares are not immediately
available or who cannot deliver either the certificates for, or a Book-Entry
Confirmation (as defined in "THE TENDER OFFER -- Procedure for Tendering Shares"
of the Offer to Purchase) with respect to, their Shares and all other documents
required hereby to the Depositary (or who are unable to complete the procedure
for book-entry transfer on a timely basis) on or prior to the Expiration Date
(as defined in "THE TENDER OFFER -- Terms of the Offer" of the Offer to
Purchase) must tender their Shares in accordance with the guaranteed delivery
procedure set forth in "THE TENDER OFFER -- Procedure for Tendering Shares" of
the Offer to Purchase. See Instruction 2.
<PAGE>   2
 
                PLEASE SEE THE INSTRUCTIONS BEGINNING ON PAGE 8.
 
[ ]     CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED BY BOOK-ENTRY TRANSFER
        MADE TO THE ACCOUNT MAINTAINED BY THE DEPOSITARY WITH THE BOOK-ENTRY
        TRANSFER FACILITY AND COMPLETE THE FOLLOWING (ONLY PARTICIPANTS IN THE
        BOOK-ENTRY TRANSFER FACILITY MAY DELIVER SHARES BY BOOK-ENTRY TRANSFER):
 
      Name of Tendering Institution
 
                                   ---------------------------------------------
 
      Account Number
                    ------------------------------------------------------------
 
      Transaction Code Number
                             ---------------------------------------------------
 
[ ]     CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED PURSUANT TO A NOTICE
        OF GUARANTEED DELIVERY PREVIOUSLY SENT TO THE DEPOSITARY AND COMPLETE
        THE FOLLOWING:
 
      Name(s) of Registered Owner(s)
 
                                    --------------------------------------------
 
      Window Ticket Number (if any)
 
                                   ---------------------------------------------
 
      Date of Execution of Notice of Guaranteed Delivery
                                                        ------------------------
 
      Name of Institution which Guaranteed Delivery
                                                   -----------------------------
 
      --------------------------------------------------------------------------
 
      Account Number
                    ------------------------------------------------------------
 
      Transaction Code Number
                             ---------------------------------------------------
 
                                        2
<PAGE>   3
 
<TABLE>
<S>                                                        <C>                 <C>                 <C>
- ----------------------------------------------------------------------------------------------------------------------
                                            DESCRIPTION OF SHARES TENDERED
- ----------------------------------------------------------------------------------------------------------------------
NAME(S) AND ADDRESS(ES) OF REGISTERED HOLDER(S)
(PLEASE FILL IN, IF BLANK, EXACTLY AS NAME(S) APPEAR(S) ON                       SHARES TENDERED
CERTIFICATE(S))                                                       (ATTACH ADDITIONAL LIST IF NECESSARY)
- ----------------------------------------------------------------------------------------------------------------------
                                                                                  TOTAL NUMBER
                                                                                    OF SHARES            NUMBER
                                                               CERTIFICATE       REPRESENTED BY         OF SHARES
                                                               NUMBER(S)*        CERTIFICATE(S)*       TENDERED**
 
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                             ------------------------------------------------------
                                                              TOTAL SHARES
- ----------------------------------------------------------------------------------------------------------------------
  * Need not be completed by Book-Entry Stockholders.
 ** If you desire to tender fewer than all Shares evidenced by any certificates listed above, please indicate in this
    column the number of Shares you wish to tender. Otherwise, all Shares evidenced by such certificates will be
    deemed to have been tendered.
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>
 
                                        3
<PAGE>   4
 
                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY
 
Ladies and Gentlemen:
 
     The undersigned hereby tenders to Arkansas Best Corporation, a Delaware
corporation ("Parent"), the above-described shares of the outstanding common
stock, par value $.01 per share (the "Common Stock"), including the associated
common stock purchase rights (the "Rights" and, together with the Common Stock,
the "Shares") of Treadco, Inc. a Delaware corporation (the "Company"), pursuant
to Parent's offer to purchase all outstanding Shares at a price of $9.00 per
Share, net to the undersigned in cash, without interest thereon, in accordance
with the terms and conditions of Parent's Offer to Purchase, dated March 23,
1999 (the "Offer to Purchase"), and this Letter of Transmittal (which together
with any amendments or supplements thereto or hereto, collectively constitute
the "Offer"), receipt of which is hereby acknowledged. Capitalized terms used
herein and not otherwise defined have the meaning given them in the Offer to
Purchase.
 
     Upon the terms of the Offer, subject to, and effective upon, acceptance for
payment of, and payment for, the Shares tendered herewith in accordance with the
terms and subject to the conditions of the Offer (including, if the Offer is
extended or amended, the terms or conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to, or upon the
order of, Parent all right, title and interest in and to all the Shares tendered
hereby (and any and all other Shares or other securities or rights issued or
issuable in respect of such Shares on or after March 15, 1999) and irrevocably
constitutes and appoints the Depositary the true and lawful agent and
attorney-in-fact of the undersigned with respect to such Shares (and any such
other Shares or securities or rights), with full power of substitution (such
power of attorney being deemed to be an irrevocable power coupled with an
interest), to (a) deliver certificates for such Shares (and any such other
Shares or securities or rights) or transfer ownership of such Shares (and any
such other Shares or securities or rights) on the account books maintained by
the Book-Entry Transfer Facility, together, in any such case, with all
accompanying evidence of transfer and authenticity, to, or upon the order of,
Parent; (b) present such Shares (and any such other Shares or securities or
rights) for transfer on the Company's books; and (c) receive all benefits and
otherwise exercise all rights of beneficial ownership of such Shares (and any
such other Shares or securities or rights), all in accordance with the terms of
the Offer.
 
     The undersigned hereby represents and warrants that the undersigned has
full power and authority to tender, sell, assign and transfer the tendered
Shares (and any and all other Shares or other securities or rights issued or
issuable in respect of such Shares on or after March 15, 1999) and that, when
the same are accepted for payment, Parent will acquire good, marketable and
unencumbered title thereto, free and clear of all liens, restrictions, claims,
charges and encumbrances and the same will not be subject to any adverse claim.
The undersigned will, upon request, execute any additional documents deemed by
the Depositary or Parent to be necessary or desirable to complete the sale,
assignment and transfer of the tendered Shares (and any such other Shares or
securities or rights).
 
     All authority conferred or agreed to be conferred in this Letter of
Transmittal shall be binding upon the successors, assigns, heirs, executors,
administrators, trustees in bankruptcy and legal representatives of the
undersigned and shall not be affected by, and shall survive, the death or
incapacity of the undersigned. Except as stated in the Offer to Purchase, this
tender is irrevocable.
 
     The undersigned hereby irrevocably appoints David E. Loeffler and Richard
F. Cooper, in their respective capacities as officers of Parent, and any
individual who shall hereafter succeed to any such office of Parent, and each of
them, and any other designees of Parent, the attorneys-in-fact and proxies of
the undersigned, each with full power of substitution, to vote at any annual,
special or adjourned meeting of the Company's stockholders or otherwise in such
manner as each such attorney and proxy or his substitute shall in his sole
discretion deem proper with respect to, to execute any written consent
concerning any matter as each such attorney and proxy or his substitute shall in
his sole discretion deem proper with respect to, and to otherwise act as each
such attorney and proxy or his substitute shall in his sole discretion deem
proper with respect to, all the Shares tendered hereby that have been accepted
for payment by Parent prior to the time any such action is
 
                                        4
<PAGE>   5
 
taken and with respect to which the undersigned is entitled to vote (and with
respect to any and all other Shares or other securities or rights issued or
issuable in respect of such Shares on or after March 15, 1999). This appointment
is effective when, and only to the extent that, Parent accepts for payment such
Shares as provided in the Offer to Purchase. This power of attorney and proxy
are irrevocable and are granted in consideration of the acceptance for payment
of such Shares in accordance with the terms of the Offer. Such acceptance for
payment shall, without further action, revoke all prior powers of attorney and
proxies appointed by the undersigned at any time with respect to such Shares
(and any such other Shares or securities or rights) and no subsequent powers of
attorney or proxies will be appointed by the undersigned, or be effective, with
respect thereto.
 
     The undersigned understands that the acceptance for payment by Parent of
tenders of Shares pursuant to any one of the procedures described in "THE TENDER
OFFER -- Procedure for Tendering Shares" of the Offer to Purchase and in
accordance with the Instructions hereto will constitute a binding agreement
between the undersigned and Parent upon the terms and subject to the conditions
of the Offer.
 
     Unless otherwise indicated herein under "Special Payment Instructions,"
please issue the check for the purchase price and/or return any certificates for
Shares not tendered or accepted for payment in the name(s) of the registered
holder(s) appearing under "Description of Shares Tendered." Similarly, unless
otherwise indicated under "Special Delivery Instructions," please mail the check
for the purchase price and/or return any certificates for Shares not tendered or
accepted for payment (and accompanying documents, as appropriate) to the
address(es) of the registered holder(s) appearing under "Description of Shares
Tendered."
 
     In the event that either or both of the Special Delivery Instructions and
the Special Payment Instructions are completed, please issue the check for the
purchase price and/or any certificates for Shares not tendered or accepted for
payment (and any accompanying documents, as appropriate) in the name of, and
deliver said check and/or return such certificates (and any accompanying
documents, as appropriate) to, the person or persons so indicated. The
undersigned recognizes that Parent has no obligation pursuant to the Special
Payment Instructions to transfer any Shares from the name of the registered
holder thereof if Parent does not accept for payment any of the Shares tendered
hereby.
 
     Unless otherwise indicated herein under "Special Delivery Instructions," in
the case of a book-entry delivery of Shares, please credit the account
maintained at the Book-Entry Transfer Facility with any Shares not accepted for
payment.
 
                                        5
<PAGE>   6
 
        ---------------------------------------------------------------
 
                          SPECIAL PAYMENT INSTRUCTIONS
                        (SEE INSTRUCTIONS 1, 5, 6 AND 7)
 
        To be completed ONLY if certificates for Shares not tendered or not
   accepted for payment and/or the check for the purchase price of Shares
   accepted for payment are to be issued in the name of someone other than
   the undersigned.
 
   Issue check and/or certificate(s) to:
 
   Name: 
         ---------------------------------------------------------------
                                 (PLEASE PRINT)
 
   Address: 
            ------------------------------------------------------------
 
        ---------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
        ---------------------------------------------------------------
 
        ---------------------------------------------------------------
 
                         SPECIAL DELIVERY INSTRUCTIONS
                        (SEE INSTRUCTIONS 1, 5, 6 AND 7)
 
        To be completed ONLY if certificates for Shares not tendered or not
   accepted for payment and/or the check for the purchase price of Shares
   accepted for payment are to be sent to someone other than the undersigned
   or to the undersigned at an address other than that indicated above.
 
   Issue check and/or certificate(s) to:
 
   Name: 
         ---------------------------------------------------------------
                                 (PLEASE PRINT)
 
   Address:
            ------------------------------------------------------------
 
        ---------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
        ---------------------------------------------------------------
 
                                        6
<PAGE>   7
 
                                   SIGN HERE
                   (ALSO COMPLETE SUBSTITUTE FORM W-9 BELOW)
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
                        (SIGNATURE(S) OF STOCKHOLDER(S))
 
                                     Dated:
                       --------------------------- , 1999
 
     (Must be signed by registered holder(s) as name(s) appear(s) on the
certificate(s) for the Shares or on a security position listing or by person(s)
authorized to become registered holder(s) by certificates and documents
transmitted herewith. If signature is by trustees, executors, administrators,
guardians, attorneys-in-fact, officers of corporations or others acting in a
fiduciary or representative capacity, please provide the following information
and see Instruction 5.)
 
Name(s)
 
- --------------------------------------------------------------------------------
                                 (PLEASE PRINT)
 
Capacity (full title)
 
Address
 
- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
Area Code and Telephone No.
 
                           GUARANTEE OF SIGNATURE(S)
                      (IF REQUIRED SEE INSTRUCTIONS 1 & 5)
 
Authorized Signature
 
Name:
                                 (PLEASE PRINT)
 
Name of Firm
 
Address
 
- --------------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
Area Code and Telephone No.
 
Dated:
- --------------------------- , 1999
 
                                        7
<PAGE>   8
 
                                  INSTRUCTIONS
             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER
 
     1. Guarantee of Signature. Except as otherwise provided below, all
signatures on this Letter of Transmittal must be guaranteed by a bank, broker,
dealer, credit union, savings association or other entity that is a member in
good standing of a recognized Medallion Program approved by The Securities
Transfer Association Inc. (each such entity an "Eligible Institution"). No
signature guarantee is required on this Letter of Transmittal (a) if this Letter
of Transmittal is signed by the registered holder(s) (which term, for purposes
of this document, shall include any participant in the Book-Entry Transfer
Facility whose name appears on a security position listing as the owner of
Shares) of Shares tendered herewith, unless such holder(s) has completed either
the box entitled "Special Delivery Instructions" or the box entitled "Special
Payment Instructions" on the reverse hereof, or (b) if such Shares are tendered
for the account of an Eligible Institution. See Instruction 5.
 
     2. Requirements of Tender. This Letter of Transmittal is to be completed by
stockholders either if certificates are to be forwarded herewith or, unless an
Agent's Message is utilized, if delivery of Shares is to be made pursuant to the
procedures for book-entry transfer set forth in "THE TENDER OFFER -- Procedure
for Tendering Shares" of the Offer to Purchase. For a stockholder validly to
tender Shares pursuant to the Offer, either (a) a properly completed and duly
executed Letter of Transmittal (or facsimile thereof), together with any
required signature guarantees (or an Agent's Message) and any other required
documents, must be received by the Depositary at one of its addresses set forth
herein prior to the Expiration Date and either (i) certificates for tendered
Shares must be received by the Depositary at one of such addresses prior to the
Expiration Date or (ii) Shares must be delivered pursuant to the procedures for
book-entry transfer set forth herein and a Book-Entry Confirmation must be
received by the Depositary prior to the Expiration Date or (b) the tendering
stockholder must comply with the guaranteed delivery procedures set forth below
and in "THE TENDER OFFER -- Procedure for Tendering Shares" of the Offer to
Purchase.
 
     Stockholders whose certificates for Shares are not immediately available or
who cannot deliver their certificates and all other required documents to the
Depositary or complete the procedures for book-entry transfer prior to the
Expiration Date may tender their Shares by properly completing and duly
executing the Notice of Guaranteed Delivery pursuant to the guaranteed delivery
procedures set forth in "THE TENDER OFFER -- Procedure for Tendering Shares" of
the Offer to Purchase. Pursuant to such procedures, (a) such tender must be made
by or through an Eligible Institution, (b) a properly completed and duly
executed Notice of Guaranteed Delivery substantially in the form provided by
Parent must be received by the Depositary prior to the Expiration Date, and (c)
the certificates for all physically delivered Shares or a Book-Entry
Confirmation with respect to all tendered Shares, as well as a properly
completed and duly executed Letter of Transmittal (or facsimile thereof) with
any required signature guarantees (or, in the case of a book-entry transfer, an
Agent's Message) and any other documents required by this Letter of Transmittal,
must be received by the Depositary within three New York Stock Exchange, Inc.
trading days after the date of execution of the Notice of Guaranteed Delivery.
 
     THE METHOD OF DELIVERY OF SHARES, THIS LETTER OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS IS AT THE ELECTION AND RISK OF THE TENDERING STOCKHOLDER. IF
DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY
INSURED, IS RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO
ENSURE TIMELY DELIVERY.
 
     No alternative, conditional or contingent tenders will be accepted and no
fractional Shares will be purchased. All tendering stockholders, by execution of
this Letter of Transmittal (or facsimile thereof), waive any right to receive
any notice of the acceptance of their Shares for payment.
 
     3. Inadequate Space. If the space provided herein is inadequate, the
certificate numbers and/or the number of Shares should be listed on a separate
schedule attached hereto.
 
     4. Partial Tenders (Applicable to Certificate Stockholders Only). If fewer
than all the Shares evidenced by any certificate submitted are to be tendered,
fill in the number of Shares that are to be tendered in the box
 
                                        8
<PAGE>   9
 
entitled "Number of Shares Tendered." In any such case, new certificate(s) for
the remainder of the Shares that were evidenced by the old certificate(s) will
be sent to the registered holder, unless otherwise provided in the appropriate
box on this Letter of Transmittal as soon as practicable after the expiration of
the Offer. All Shares represented by certificates delivered to the Depositary
will be deemed to have been tendered unless otherwise indicated.
 
     5. Signatures on Letters of Transmittal; Stock Powers and Endorsements. If
this Letter of Transmittal is signed by the registered holder of the Shares
tendered hereby, the signature must correspond with the name as written on the
face of the certificate(s) without any change whatsoever.
 
     If any of the Shares tendered hereby are owned of record by two or more
joint owners, all such owners must sign this Letter of Transmittal.
 
     If any tendered Shares are registered in different names on several
certificates, it will be necessary to complete, sign and submit as many separate
Letters of Transmittal as there are different registrations of certificates.
 
     If this Letter of Transmittal or any certificates or stock powers are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of corporations or others acting in a fiduciary or representative
capacity, such persons should so indicate when signing, and proper evidence
satisfactory to Parent of their authority so to act must be submitted.
 
     When this Letter of Transmittal is signed by the registered holder(s) of
the Shares listed and transmitted hereby, no endorsements of certificates or
separate stock powers are required unless payment is to be made to or
certificates for Shares not tendered or accepted for payment are to be issued to
a person other than the registered holder(s). Signatures on such certificates or
stock powers must be guaranteed by an Eligible Institution.
 
     If this Letter of Transmittal is signed by a person other than the
registered holder(s) of certificates listed, the certificates must be endorsed
or accompanied by appropriate stock powers, in either case signed exactly as the
name or names of the registered owner or owners appear on the certificates.
Signatures on such certificates or stock powers must be guaranteed by an
Eligible Institution.
 
     6. Stock Transfer Taxes. Parent will pay any stock transfer taxes with
respect to the transfer and sale of Shares to it or its order pursuant to the
Offer. If, however, payment of the purchase price is to be made to, or if
certificates for Shares not tendered or accepted for payment are to be
registered in the name of, any persons other than the registered holder(s), or
if tendered certificates are registered in the name of any person other than the
person(s) signing this Letter of Transmittal, the amount of any stock transfer
taxes (whether imposed on the registered holder(s) or such person) payable on
account of the transfer to such person will be deducted from the purchase price
unless satisfactory evidence of the payment of such taxes or exemption therefrom
is submitted.
 
     EXCEPT AS PROVIDED IN THIS INSTRUCTION 6, IT WILL NOT BE NECESSARY FOR
TRANSFER TAX STAMPS TO BE AFFIXED TO THE CERTIFICATES LISTED IN THIS LETTER OF
TRANSMITTAL.
 
     7. Special Payment and Delivery Instructions. If a check is to be issued in
the name of, and/or certificates for Shares not tendered or not accepted for
payment are to be returned to, a person other than the signer of this Letter of
Transmittal or if a check is to be sent and/or such certificates are to be
returned to a person other than the signer of this Letter of Transmittal or to
an address other than that shown above, the appropriate boxes on this Letter of
Transmittal should be completed.
 
     8. Waiver of Conditions. Subject to the terms of the Offer, Parent reserves
the absolute right in its sole discretion to waive any of the specified
conditions of the Offer, in whole or in part, in the case of any Shares
tendered.
 
     9. 31% Backup Withholding. Under U.S. Federal income tax law, a stockholder
whose tendered Shares are accepted for payment is required to provide the
Depositary with such stockholder's correct taxpayer
 
                                        9
<PAGE>   10
 
identification number ("TIN") on Substitute Form W-9 below. If the Depositary is
not provided with the correct TIN, the Internal Revenue Service may subject the
stockholder or other payee to a $50 penalty. In addition, payments that are made
to such stockholder or other payee with respect to Shares purchased pursuant to
the Offer may be subject to a 31% backup withholding.
 
     Certain stockholders (including, among others, all corporations and certain
foreign individuals) are not subject to these backup withholding and reporting
requirements. In order for a foreign individual to qualify as an exempt
recipient, the stockholder must submit a Form W-8, signed under penalties of
perjury, attesting to that individual's exempt status. A Form W-8 can be
obtained from the Depositary. See the enclosed "Guidelines for Certification of
Taxpayer Identification Number on Substitute Form W-9" for more instructions.
 
     If backup withholding applies, the Depositary is required to withhold 31%
of any such payments made to the stockholder or other payee. Backup withholding
is not an additional tax. Rather, the tax liability of persons subject to backup
withholding will be reduced by the amount of tax withheld, provided that the
required information is given to the Internal Revenue Service. If withholding
results in an overpayment of taxes, a refund may be obtained from the Internal
Revenue Service.
 
     The box in Part 3 of the Substitute Form W-9 may be checked if the
tendering stockholder has not been issued a TIN and has applied for a TIN or
intends to apply for a TIN in the near future. If the box in Part 3 is checked,
the stockholder or other payee must also complete the Certificate of Awaiting
Taxpayer Identification Number below in order to avoid backup withholding. Even
if the box in Part 3 is checked and the Certificate of Awaiting Taxpayer
Identification Number is completed, the Depositary will withhold 31% on all
payments made prior to the time a properly certified TIN is provided to the
Depositary. However, such amounts will be refunded to such stockholder if a TIN
is provided to the Depositary within 60 days.
 
     The stockholder is required to give the Depositary the TIN (i.e., social
security number or employer identification number) of the record owner of the
Shares or of the last transferee appearing on the transfers attached to, or
endorsed on, the Shares. If the Shares are in more than one name or are not in
the name of the actual owner, consult the enclosed "Guidelines for Certification
of Taxpayer Identification Number on Substitute Form W-9" for additional
guidance on which number to report.
 
     10. Requests for Assistance or Additional Copies. Requests for additional
copies of the Offer to Purchase, this Letter of Transmittal, the Notice of
Guaranteed Delivery, and the Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9 should be directed to the
Information Agent at its address set forth below. Questions or requests for
assistance may also be directed to the Information Agent.
 
     IMPORTANT: THIS LETTER OF TRANSMITTAL OR A FACSIMILE COPY THEREOF (TOGETHER
WITH CERTIFICATES FOR, OR A BOOK-ENTRY CONFIRMATION WITH RESPECT TO, TENDERED
SHARES WITH ANY REQUIRED SIGNATURE GUARANTEES AND ALL OTHER REQUIRED DOCUMENTS)
MUST BE RECEIVED BY THE DEPOSITARY, OR THE NOTICE OF GUARANTEED DELIVERY MUST BE
RECEIVED BY THE DEPOSITARY, PRIOR TO THE EXPIRATION DATE.
 
                                       10
<PAGE>   11
 
<TABLE>
<S>                             <C>                                                      <C>
- ------------------------------------------------------------------------------------------------------------------------
 
                                  PART 1--PLEASE PROVIDE YOUR TIN IN THE BOX AT RIGHT     ----------------------------
  SUBSTITUTE                      AND CERTIFY BY SIGNING AND DATING BELOW.                   SOCIAL SECURITY NUMBER
   FORM W-9
                                                                                                       OR
                                                                                          ----------------------------
                                                                                         EMPLOYER IDENTIFICATION NUMBER
                                ----------------------------------------------------------------------------------------
  DEPARTMENT OF THE TREASURY
  INTERNAL REVENUE SERVICE        PART 2 -- CERTIFICATION -- UNDER PENALTIES OF                    PART 3  --
                                  PERJURY, I CERTIFY THAT:                                      AWAITING TIN [ ]
                                  (1) THE NUMBER SHOWN ON THIS FORM IS MY CORRECT
                                      TAXPAYER IDENTIFICATION (OR I AM WAITING FOR A
                                      NUMBER TO BE ISSUED FOR ME) AND
                                  (2) I AM NOT SUBJECT TO BACKUP WITHHOLDING EITHER
                                      BECAUSE: (A) I AM EXEMPT FROM BACKUP WITHHOLDING,
                                      OR (B) I HAVE NOT BEEN NOTIFIED BY THE INTERNAL
                                      REVENUE SERVICE (THE "IRS") THAT I AM SUBJECT TO
                                      THE BACKUP WITHHOLDING AS A RESULT OF A FAILURE
                                      TO REPORT ALL INTEREST OR DIVIDENDS OR (C) THE
                                      IRS HAS NOTIFIED ME THAT I AM NO LONGER SUBJECT
                                      TO BACKUP WITHHOLDING.
                                ----------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<S>                                <C>                                               <C>
                                     CERTIFICATION INSTRUCTIONS -- YOU MUST CROSS OUT ITEM (2) ABOVE IF YOU HAVE BEEN
  PAYER'S REQUEST FOR                NOTIFIED BY THE IRS THAT YOU ARE CURRENTLY SUBJECT TO BACKUP WITHHOLDING BECAUSE
  TAXPAYER IDENTIFICATION            OF UNDERREPORTING INTEREST OR DIVIDENDS ON YOUR TAX RETURN. HOWEVER, IF AFTER
  NUMBER (TIN)                       BEING NOTIFIED BY THE IRS THAT YOU ARE SUBJECT TO BACKUP WITHHOLDING, YOU RECEIVED
                                     ANOTHER NOTIFICATION FROM THE IRS THAT YOU ARE NO LONGER SUBJECT TO BACKUP
                                     WITHHOLDING, DO NOT CROSS OUT SUCH ITEM (2).
                                     SIGNATURE __________  DATE __________
- -----------------------------------------------------------------------------------------------------------------------
</TABLE>
 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER. PLEASE REVIEW
      THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
      NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
 
            YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE
                        BOX IN PART 3 OF SUBSTITUTE FORM W-9.
 
<TABLE>
<S>  <C>                                                                                                           <C>
- -----------------------------------------------------------------------------------------------------------------------
                            CERTIFICATE OF A PERSON AWAITING TAXPAYER IDENTIFICATION NUMBER
     I CERTIFY UNDER PENALTIES OF PERJURY THAT A TAXPAYER IDENTIFICATION NUMBER HAS NOT BEEN ISSUED TO ME, AND
     EITHER (1) I HAVE MAILED OR DELIVERED AN APPLICATION TO RECEIVE A TAXPAYER IDENTIFICATION NUMBER TO THE
     APPROPRIATE INTERNAL REVENUE SERVICE CENTER OR SOCIAL SECURITY ADMINISTRATION OFFICE OR (2) I INTEND TO MAIL
     OR DELIVER AN APPLICATION IN THE NEAR FUTURE. I UNDERSTAND THAT IF I DO NOT PROVIDE A TAXPAYER IDENTIFICATION
     NUMBER BY THE TIME OF PAYMENT, 31% OF ALL REPORTABLE PAYMENTS MADE TO ME WILL BE WITHHELD, BUT THAT SUCH
     AMOUNTS WILL BE REFUNDED TO ME IF I THEN PROVIDE A TAXPAYER IDENTIFICATION NUMBER WITHIN SIXTY (60) DAYS.
</TABLE>
 
<TABLE>
<S>  <C>                                                                  <C>                                   <C>
     SIGNATURE                                                            DATE
- --------------------------------------------------------------------------------------------------------------------
</TABLE>
 
                                       11
<PAGE>   12
 
     Questions and requests for assistance or additional copies of the Offer to
Purchase, this Letter of Transmittal and other tender offer materials may be
directed to the Information Agent as set forth below.
 
                    THE INFORMATION AGENT FOR THIS OFFER IS:
 
                             D. F. KING & CO., INC.
                                77 Water Street
                              New York, N.Y. 10005
                 Banks and Brokers Call Collect: (212) 269-5550
                   All Others Call Toll Free: (800) 829-6554
 
                                       12

<PAGE>   1
 
                         NOTICE OF GUARANTEED DELIVERY
 
                                      FOR
 
                      TENDER OF SHARES OF COMMON STOCK AND
                    ASSOCIATED COMMON STOCK PURCHASE RIGHTS
 
                                       OF
 
                                 TREADCO, INC.
                   (NOT TO BE USED FOR SIGNATURE GUARANTEES)
 
     As set forth in "THE TENDER OFFER -- Procedure for Tendering Shares" of the
Offer to Purchase (as defined below), this form or one substantially equivalent
hereto must be used to accept the Offer (as defined below) if certificates
representing shares of common stock, par value $.01 per share (the "Common
Stock"), including the associated common stock purchase rights (the "Rights"
and, together with the Common Stock, the "Shares"), of Treadco, Inc., a Delaware
corporation (the "Company"), are not immediately available or if the procedures
for book-entry transfer cannot be completed on a timely basis or time will not
permit all required documents to reach the Depositary prior to the Expiration
Date (as defined in "THE TENDER OFFER -- Terms of the Offer" of the Offer to
Purchase). Such form may be delivered by hand or transmitted by telegram or
facsimile transmission or mailed to the Depositary and must include a guarantee
by an Eligible Institution (as defined in "THE TENDER OFFER -- Procedure for
Tendering Shares" of the Offer to Purchase). See "THE TENDER OFFER -- Procedure
for Tendering Shares" of the Offer to Purchase.
 
                        The Depositary for the Offer is:
 
                        HARRIS TRUST COMPANY OF NEW YORK
 
<TABLE>
<S>                                            <C>
                   By Mail:                             By Hand/Overnight Delivery:
             Wall Street Station                               Receive Window
                P.O. Box 1023                                Wall Street Plaza
        New York, New York 10268-1023                    88 Pine Street, 19th Floor
                                                          New York, New York 10005
</TABLE>
 
                                 By Facsimile:
                                 (212) 701-7636
 
                             Confirm by Telephone:
                                 (212) 701-7624
 
     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS, OR TRANSMISSION OF INSTRUCTIONS
VIA A FACSIMILE NUMBER, OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A
VALID DELIVERY.
 
     This form is not to be used to guarantee signatures. If a signature on a
Letter of Transmittal is required to be guaranteed by an Eligible Institution
under the instructions thereto, such signature guarantee must appear in the
applicable space provided in the signature box on the Letter of Transmittal.
<PAGE>   2
 
Ladies and Gentlemen:
 
     The undersigned hereby tenders to Arkansas Best Corporation, a Delaware
corporation ("Parent") upon the terms and subject to the conditions set forth in
Parent's Offer to Purchase, dated March 23, 1999 (the "Offer to Purchase"), and
in the related Letter of Transmittal (which, together with any amendments or
supplements thereto, collectively constitute the "Offer"), receipt of which is
hereby acknowledged, Shares pursuant to the guaranteed delivery procedures set
forth in "THE TENDER OFFER -- Procedure for Tendering Shares" of the Offer to
Purchase.
 
- ------------------------------------------------------
- ------------------------------------------------------
 
<TABLE>
    <S>                                                         <C>
 
    Number of Shares:                                           Address(es): 
                     -------------------------------                        ------------------------------------
                                                                ------------------------------------------------
    Name(s) of Record Holder(s): 
                                --------------------            ------------------------------------------------
    ------------------------------------------------            Zip Code
    (Please Print)
                                                                Area Code and Tel. No.: 
                                                                                       -------------------------
    Certificate Nos. (if available):

    ------------------------------------------------            Account Number: 
                                                                               ---------------------------------
    ------------------------------------------------            Signature(s): 
                                                                              ----------------------------------
                                                                ------------------------------------------------
                                                                Dated: 
                                                                      ------------------------------------------
</TABLE>
 
- ------------------------------------------------------
- ------------------------------------------------------
 
                                   GUARANTEE
                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)
 
     The undersigned, a commercial bank or trust company or savings institution
having an office or correspondent in the United States or a member firm of a
registered national securities exchange or a member of the National Association
of Securities Dealers, Inc., hereby guarantees to deliver to the Depositary
either the certificates representing the Shares tendered hereby, in proper form
for transfer, or a Book-Entry Confirmation (as defined in "THE TENDER
OFFER -- Procedure for Tendering Shares" of the Offer to Purchase) of a transfer
of such Shares, in any such case together with a properly completed and duly
executed Letter of Transmittal, or a manually signed facsimile thereof, with any
required signature guarantees or an Agent's Message, and any other documents
required by the Letter of Transmittal within three New York Stock Exchange, Inc.
trading days after the date hereof.
 
Name of Firm:
             -----------------------------------------
 
Address:
        ----------------------------------------------
 
- ------------------------------------------------------
                                           Zip Code
 
Area Code and Tel. No.:
                       -------------------------------

- ------------------------------------------------------
(Authorized Signature)
 
Title:
      ------------------------------------------------
 
Dated:
      ------------------------------------------------
 
NOTE:  DO NOT SEND CERTIFICATES FOR SHARES WITH THIS NOTICE. SHARE CERTIFICATES
       SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL.
 
                                        2

<PAGE>   1
 
                           OFFER TO PURCHASE FOR CASH
                     ALL OUTSTANDING SHARES OF COMMON STOCK
            (INCLUDING THE ASSOCIATED COMMON STOCK PURCHASE RIGHTS)
 
                                       OF
 
                                 TREADCO, INC.
                                       AT
 
                              $9.00 NET PER SHARE
 
                                       BY
 
                           ARKANSAS BEST CORPORATION
- --------------------------------------------------------------------------------
         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
        NEW YORK CITY TIME, ON TUESDAY, APRIL 20, 1999, UNLESS EXTENDED.
- --------------------------------------------------------------------------------
 
                                                                  March 23, 1999
 
To Brokers, Dealers, Banks,
  Trust Companies and Other Nominees:
 
     We are enclosing the materials listed below in connection with the offer by
Arkansas Best Corporation, a Delaware corporation ("Parent"), to purchase all
the outstanding shares of the common stock, par value $.01 per share (the
"Common Stock"), including the associated common stock purchase rights (the
"Rights" and, together with the Common Stock, the "Shares"), of Treadco, Inc., a
Delaware corporation (the "Company") at $9.00 per Share, net to the Seller in
cash, without interest, upon the terms and subject to the conditions set forth
in Parent's Offer to Purchase dated March 23, 1999 (the "Offer to Purchase"),
and the related Letter of Transmittal (which, together with any supplements or
amendments thereto, collectively constitute the "Offer").
 
     Please furnish copies of the enclosed materials to those of your clients
for whom you hold Shares registered in your name or in the name of your nominee.
Enclosed herewith are copies of the following documents:
 
          1. Offer to Purchase;
 
          2. Letter of Transmittal to be used by stockholders of the Company
     accepting the Offer;
 
          3. The Letter to Stockholders of the Company from the President and
     Chief Executive Officer of the Company accompanied by the Company's
     Solicitation/Recommendation Statement on Schedule 14D-9;
 
          4. A printed form of letter that may be sent to your clients for whose
     account you hold Shares in your name or in the name of a nominee, with
     space provided for obtaining such client's instructions with regard to the
     Offer;
 
          5. Notice of Guaranteed Delivery;
 
          6. Guidelines for Certification of Taxpayer Identification Number on
     Substitute Form W-9; and
 
          7. Return envelope addressed to the Depositary.
<PAGE>   2
 
WE URGE YOU TO CONTACT YOUR CLIENTS PROMPTLY. PLEASE NOTE THAT THE OFFER AND
WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON TUESDAY,
APRIL 20, 1999, UNLESS EXTENDED.
 
     The Board of Directors of the Company (the "Board"), based, among other
things, on the unanimous recommendation of a special committee of independent
directors of the Board, has, by unanimous vote of all directors, approved the
Offer and the Merger (as defined below) and determined that the Offer and the
Merger, taken together, are fair to, and in the best interests of, the
stockholders of the Company (other than Parent) and recommends that the
stockholders of the Company accept the Offer and tender their Shares pursuant to
the Offer.
 
     The Offer is being made pursuant to the Agreement and Plan of Merger dated
as of March 15, 1999 (the "Merger Agreement"), among Parent, Treadco Acquisition
Corporation, a Delaware corporation and wholly-owned subsidiary of Parent
("Newco"), and the Company pursuant to which, following the consummation of the
Offer and the satisfaction or waiver of certain conditions, Newco will be merged
with and into the Company, with the Company surviving the merger (as such, the
"Surviving Corporation") as a wholly-owned subsidiary of Parent (the "Merger").
 
     In the Merger, each outstanding Share (other than Shares owned by (i)
Parent, the Company or any direct or indirect subsidiary of Parent or (ii)
stockholders, if any, who are entitled to and who properly exercise dissenters'
rights under Delaware law) will be converted into the right to receive $9.00 per
Share, without interest, as set forth in the Merger Agreement and described in
the Offer to Purchase.
 
     In order to accept the Offer, a duly executed and properly completed Letter
of Transmittal with any required signature guarantees, or an Agent's Message (as
defined in the Offer to Purchase) in connection with a book-entry delivery of
Shares, and any other required documents should be sent to the Depositary and
either Share certificates representing the tendered Shares should be delivered
to the Depositary, or such Shares should be tendered by book-entry transfer into
the Depositary's account maintained at the Book-Entry Transfer Facility (as
described in "THE TENDER OFFER -- Procedure for Tendering Shares" of the Offer
to Purchase), all in accordance with the instructions set forth in the Letter of
Transmittal and the Offer to Purchase.
 
     If holders of Shares wish to tender, but it is impracticable for them to
forward their Share certificates or other required documents on or prior to the
Expiration Date or comply with the book-entry transfer procedures on a timely
basis, a tender may be effected by following the guaranteed delivery procedures
specified in "THE TENDER OFFER -- Procedure for Tendering Shares" of the Offer
to Purchase.
 
     Parent will not pay any fees or commissions to any broker or dealer or
other person (other than the Information Agent as described in the Offer to
Purchase) in connection with the solicitation of tenders of Shares pursuant to
the Offer. You will be reimbursed upon request for customary mailing and
handling expenses incurred by you in forwarding the enclosed offering materials
to your customers.
 
     Questions and requests for additional copies of the enclosed material may
be directed to the Information Agent at the addresses and telephone numbers set
forth on the back cover of the enclosed Offer to Purchase.
 
                                            Very truly yours,
 
                                            ARKANSAS BEST CORPORATION
 
NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL RENDER YOU OR ANY
OTHER PERSON THE AGENT OF PARENT, THE DEPOSITARY OR THE INFORMATION AGENT OR ANY
AFFILIATE OF ANY OF THEM, OR AUTHORIZE YOU OR ANY OTHER PERSON TO GIVE ANY
INFORMATION OR USE ANY DOCUMENT OR MAKE ANY STATEMENTS ON BEHALF OF ANY OF THEM
WITH RESPECT TO THE OFFER OTHER THAN THE ENCLOSED DOCUMENTS AND THE STATEMENTS
CONTAINED THEREIN.
                                        2

<PAGE>   1
 
                           OFFER TO PURCHASE FOR CASH
                     ALL OUTSTANDING SHARES OF COMMON STOCK
                           (INCLUDING THE ASSOCIATED
                         COMMON STOCK PURCHASE RIGHTS)
 
                                       OF
 
                                 TREADCO, INC.
                                       AT
 
                              $9.00 NET PER SHARE
 
                                       BY
 
                           ARKANSAS BEST CORPORATION
- --------------------------------------------------------------------------------
 
         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
        NEW YORK CITY TIME, ON TUESDAY, APRIL 20, 1999 UNLESS EXTENDED.
- --------------------------------------------------------------------------------
 
To Our Clients:
 
     Enclosed for your consideration is an Offer to Purchase dated March 23,
1999 (the "Offer to Purchase"), and a related Letter of Transmittal (which,
together with any amendments or supplements thereto, collectively constitute the
"Offer") relating to an offer by Arkansas Best Corporation, a Delaware
corporation ("Parent"), to purchase all the outstanding shares (not owned by
Parent) of the common stock, par value $.01 per share (the "Common Stock"),
including the associated common stock purchase rights (the "Rights" and,
together with the Common Stock, the "Shares") of Treadco, Inc., a Delaware
corporation (the "Company"), at $9.00 per Share, net to the seller in cash,
without interest, upon the terms and subject to the conditions set forth in the
Offer. Also enclosed is the Letter to Stockholders of the Company from the
President and Chief Executive Officer of the Company accompanied by the
Company's Solicitation/ Recommendation Statement on Schedule 14D-9.
 
     WE ARE THE HOLDER OF RECORD OF SHARES HELD BY US FOR YOUR ACCOUNT. A TENDER
OF SUCH SHARES CAN BE MADE ONLY BY US AS THE HOLDER OF RECORD AND PURSUANT TO
YOUR INSTRUCTIONS. THE LETTER OF TRANSMITTAL IS FURNISHED TO YOU FOR YOUR
INFORMATION ONLY AND CANNOT BE USED TO TENDER SHARES HELD BY US FOR YOUR
ACCOUNT.
 
     We request instructions as to whether you wish to tender any or all the
Shares held by us for your account, pursuant to the terms and conditions set
forth in the Offer.
 
     Your attention is invited to the following:
 
          1. The tender price is $9.00 per Share, net to the seller in cash,
     without interest, upon the terms and subject to the conditions set forth in
     the Offer.
 
          2. The Board of Directors of the Company (the "Board"), based, among
     other things, on the unanimous recommendation of a special committee of
     independent directors of the Board, has, by unanimous vote of all
     directors, approved the Offer and the Merger (as defined below) and
     determined that the Offer and the Merger, taken together, are fair to, and
     in the best interests of, the stockholders of the Company (other than
     Parent) and recommends that the stockholders of the Company accept the
     Offer and tender their Shares pursuant to the Offer.
<PAGE>   2
 
          3. The Offer is being made for all outstanding Shares.
 
          4. The Offer is being made pursuant to the Agreement and Plan of
     Merger dated as of March 15, 1999 (the "Merger Agreement"), among Parent,
     Treadco Acquisition Corporation, a Delaware corporation and wholly-owned
     subsidiary of Parent ("Newco"), and the Company pursuant to which,
     following the consummation of the Offer and the satisfaction or waiver of
     certain conditions, Newco will be merged with and into the Company, with
     the Company surviving the merger as a wholly-owned subsidiary of Parent
     (the "Merger"). In the Merger, each outstanding Share (other than Shares
     owned by (i) Parent, the Company or any direct or indirect subsidiary of
     Parent; or (ii) stockholders, if any, who are entitled to and who properly
     exercise dissenters' rights under Delaware law) will be converted into the
     right to receive $9.00 per Share, without interest, as set forth in the
     Merger Agreement and described in the Offer to Purchase.
 
          5. The Offer and withdrawal rights will expire at 12:00 Midnight, New
     York City time, on Tuesday, April 20, 1999, unless the Offer is extended by
     Parent. In all cases, payment for Shares accepted for payment pursuant to
     the Offer will be made only after timely receipt by the Depositary of
     certificates for such Shares (or timely Book-Entry Confirmation of a
     transfer of such Shares as described in "THE TENDER OFFER -- Procedure for
     Tendering Shares" of the Offer to Purchase), a properly completed and duly
     executed Letter of Transmittal (or facsimile thereof) or an Agent's Message
     (as defined in the Offer to Purchase) in connection with a book-entry
     delivery and any other documents required by the Letter of Transmittal.
 
          6. Parent will pay any stock transfer taxes with respect to the
     transfer and sale of Shares to it or its order pursuant to the Offer,
     except as otherwise provided in Instruction 6 of the Letter of Transmittal.
 
     If you wish to have us tender any of or all your Shares, please so instruct
us by completing, executing, detaching and returning to us the instruction form
set forth below. An envelope to return your instructions to us is enclosed. If
you authorize tender of your Shares, all such Shares will be tendered unless
otherwise specified below. Your instructions to us should be forwarded promptly
to permit us to submit a tender on your behalf prior to the expiration of the
Offer.
 
     The Offer is not being made to, nor will tenders be accepted from or on
behalf of, holders of Shares in any jurisdiction in which the making or
acceptance of the Offer would not be in compliance with the laws of such
jurisdiction.
 
                                        2
<PAGE>   3
 
               INSTRUCTIONS WITH RESPECT TO THE OFFER TO PURCHASE
                     ALL OUTSTANDING SHARES OF COMMON STOCK
            (INCLUDING THE ASSOCIATED COMMON STOCK PURCHASE RIGHTS)
 
                                       OF
 
                                 TREADCO, INC.
 
     The undersigned acknowledges receipt of your letter enclosing the Offer to
Purchase dated March 23, 1999, of Arkansas Best Corporation, a Delaware
corporation, and the related Letter of Transmittal, relating to shares of the
common stock, par value $.01 per share (the "Common Stock"), including the
associated common stock purchase rights (the "Rights" and, together with the
Common Stock, the "Shares") of Treadco, Inc., a Delaware corporation.
 
     This will instruct you to tender the number of Shares indicated below held
by you for the account of the undersigned on the terms and conditions set forth
in such Offer to Purchase and the related Letter of Transmittal.
 
Dated:  __________ , 1999
 
- ---------------------------------------------------------
 
<TABLE>
<S>                                                         <C>
  NUMBER OF SHARES TO BE TENDERED*
  ________ Shares
- --------------------------------------------------------
</TABLE>
 
                                            ------------------------------------
 
                                            ------------------------------------
                                                        Signature(s)
 
                                            ------------------------------------
 
                                            ------------------------------------
                                                    Please print name(s)
 
                                            ------------------------------------
 
                                            ------------------------------------
                                                 Address (Include Zip Code)
 
                                            ------------------------------------
 
                                            ------------------------------------
                                                Area Code and Telephone No.
 
                                            ------------------------------------
 
                                            ------------------------------------
                                             Taxpayer Identification or Social
                                                        Security No.
 
- ---------------
 
* Unless otherwise indicated, it will be assumed that all your Shares are to be
  tendered.
                                        3

<PAGE>   1
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE PAYER.
Social Security numbers have nine digits separated by two hyphens: i.e.
000-00-0000. Employer identification numbers have nine digits separated by only
one hyphen: i.e. 00-0000000. The table below will help determine the number to
give the payer.
 
<TABLE>
<CAPTION>
- -----------------------------------------------------------
                                            GIVE THE
                                        SOCIAL SECURITY
OP     FOR THIS TYPE OF ACCOUNT:            NUMBER OF--
- -----------------------------------------------------------
<S>  <C>                             <C>
 1.  An individual's account         The individual
 2.  Two or more individuals (joint  The actual owner of
     account)                        the account or, if
                                     combined funds, any
                                     one of the
                                     individuals(1)
 3.  Husband and wife (joint         The actual owner of
     account)                        the account or, if
                                     joint funds, either
                                     person(1)
 4.  Custodian account of a minor    The minor(2)
     (Uniform Gift to Minors Act)
 5.  Adult and minor (joint          The adult or, if the
     account)                        minor is the only
                                     contributor, the
                                     minor(1)
 6.  Account in the name of          The ward, minor or
     guardian or committee for a     incompetent person(3)
     designated ward, minor, or
     incompetent person
 7.  a. The usual revocable savings  The grantor-
       trust account (grantor is     trustee(1)
       also trustee)
     b. So-called trust account      The actual owner(1)
       that is not a legal or valid
       trust under State law
 8.  Sole proprietorship account     The owner(4)
- -----------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
- -----------------------------------------------------------
                                       GIVE THE EMPLOYER
                                         IDENTIFICATION
     FOR THIS TYPE OF ACCOUNT:            NUMBER OF--
- -----------------------------------------------------------
<C>  <S>                             <C>
 9.  A valid trust, estate, or       The legal entity (Do
     pension trust                   not furnish the
                                     identifying number of
                                     the personal
                                     representative or
                                     trustee unless the
                                     legal entity itself is
                                     not designated in the
                                     account title)(5)
 
10.  Corporate account               The corporation
 
11.  Religious, charitable, or       The organization
     educational organization
     account
 
12.  Partnership account held in     The partnership
     the name of the business
 
13.  Association, club, or other     The organization
     tax-exempt organization
 
14.  A broker or registered nominee  The broker or nominee
 
15.  Account with the Department of  The public entity
     Agriculture in the name of a
     public entity (such as a State
     or local government, school
     district, or prison) that
     receives agricultural program
     payments
- -----------------------------------------------------------
</TABLE>

(1) List first and circle the name of the person whose number you furnish.
(2) Circle the minor's name and furnish the minor's social security number.
(3) Circle the ward's, minor's or incompetent person's name and furnish such
    person's social security number.
(4) Show the name of the owner.
(5) List first and circle the name of the legal trust, estate, or pension trust.
 
NOTE: If no name is circled when there is more than one name, the number will be
      considered to be that of the first name listed.

<PAGE>   2
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
                                     PAGE 2
 
OBTAINING A NUMBER
If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Number Card, or Form
SS-4, Application for Employer Identification Number, at the local office of the
Social Security Administration or the Internal Revenue Service and apply for a
number.
 
PAYEES EXEMPT FROM BACKUP WITHHOLDING
Payees specifically exempted from backup withholding on ALL payments include the
following:
  - A corporation.
  - A financial institution.
  - An organization exempt from tax under section 501(a), or an individual
    retirement.
  - The United States or any agency or instrumentality thereof.
  - A State, the District of Columbia, a possession of the United States, or any
    subdivision or instrumentality thereof.
  - A foreign government, a political subdivision of a foreign government, or
    any agency or instrumentality thereof.
  - An international organization or any agency, or instrumentality thereof.
  - A registered dealer in securities or commodities registered in the U.S. or a
    possession of the U.S.
  - A real estate investment trust.
  - A common trust fund operated by a bank under section 584(a).
  - An exempt charitable remainder trust, or a non-exempt trust described in
    Section 4947(a)(1).
  - An entity registered at all times under the Investment Company Act of 1940.
  - A foreign central bank of issue.
  Payments of dividends and patronage dividends not generally subject to backup
withholding include the following:
  - Payments to nonresident aliens subject to withholding under Section 1441.
  - Payments to partnerships not engaged in a trade or business in the U.S. and
    which have at least one nonresident partner.
  - Payments of patronage dividends where the amount received is not paid in
    money.
  - Payments made by certain foreign organizations.
  - Payments made to a nominee.
  Payments of interest not generally subject to backup withholding include the
following:
  - Payments of interest on obligations issued by individuals. NOTE: You may be
    subject to backup withholding if this interest is $600 or more, and is paid
    in the course of the payer's trade or business and you have not provided
    your correct taxpayer identification number to the payer.
  - Payments of tax-exempt interest (including exempt-interest dividends under
    Section 852).
  - Payments described in Section 6049(b)(5) to non-resident aliens.
  - Payments on tax-free covenant bonds under Section 1451.
  - Payments made by certain foreign organizations.
  - Payments made to a nominee.
 
Exempt payees described above should file Form W-9 to avoid possible erroneous
backup withholding. FILE THIS FORM WITH THE PAYER, FURNISH YOUR TAXPAYER
IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM, AND RETURN IT TO
THE PAYER. IF THE PAYMENTS ARE INTEREST, DIVIDENDS, OR PATRONAGE DIVIDENDS, ALSO
SIGN AND DATE THE FORM.
 
  Certain payments other than interest, dividends, and patronage dividends, that
are not subject to information reporting are also not subject to backup
withholding. For details, see the regulations under Sections 6041, 6041A(a),
6045, and 6050A.
 
  PRIVACY ACT NOTICE.--Section 6109 requires most recipients of dividend,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to IRS. IRS uses the numbers for identification
purposes. Payers must be given the numbers whether or not recipients are
required to file tax returns. Beginning January 1, 1994, payers must generally
withhold 20% of taxable interest, dividend, and certain other payments to a
payee who does not furnish a taxpayer identification number to a payer. Certain
penalties may also apply.
 
PENALTIES
(1) PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER. If you fail
to furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not to willful neglect.
(2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING. If you make
a false statement with no reasonable basis which results in no imposition of
backup withholding, you are subject to a penalty of $500.
(3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION. Falsifying certifications or
affirmations may subject you to criminal penalties including fines and/or
imprisonment.
 
                  FOR ADDITIONAL INFORMATION CONTACT YOUR TAX
                  CONSULTANT OR THE INTERNAL REVENUE SERVICE.

<PAGE>   1

                             FOR IMMEDIATE RELEASE

                      ARKANSAS BEST CORPORATION TO ACQUIRE
                          THE PUBLICLY-HELD SHARES OF
                   TREADCO, INC. FOR $9.00 PER SHARE IN CASH

                     (NASDAQ/NMS: "ABFS"; WWW.ARK BEST.COM)
                     (NASDAQ/NMS: "TRED"; WWW.TREADCO.COM)

         (Fort Smith, Arkansas, March 16, 1999) -- Arkansas Best Corporation
(ABFS) and Treadco, Inc. (TRED) announced today that they have signed a
definitive Merger Agreement under which the outstanding shares of Treadco's
common stock not owned by Arkansas Best will be acquired for $9.00 per share in
cash. Pursuant to the Merger Agreement, Arkansas Best will commence a cash
tender offer for all of the Treadco publicly-held shares within five business
days. The tender offer is subject to certain conditions, including Arkansas
Best owning two-thirds of the outstanding Treadco shares on a fully-diluted
basis upon completion of the tender. Arkansas Best currently owns approximately
49% of Treadco (approximately 47% on a fully-diluted basis).

         Following the closing of the tender offer, a wholly-owned subsidiary
of Arkansas Best will be merged into Treadco, and Arkansas Best will acquire
all of the remaining Treadco shares not tendered for $9.00 per share in cash.
The transaction was approved by the Treadco board of directors upon
recommendation by a special committee of independent directors of Treadco
following the receipt of a fairness opinion from Stephens Inc., independent
financial advisors to the special committee.

         Shapiro Capital Management Company, Inc., Treadco's largest
independent stockholder, which beneficially owns approximately 22% of Treadco
(approximately 21% on a fully diluted basis), previously agreed to support the
transaction.

         The foregoing release contains forward-looking statements that are
based on current expectations and are subject to a number risks and
uncertainties. Consummation of the tender offer and the merger are subject to a
number of contingencies including regulatory approval and the satisfaction of
certain customary closing conditions.

                                 END OF RELEASE

Arkansas Best Contacts:

    Mr. David E. Loeffler, Vice President, Chief Financial Officer and Treasurer
    Telephone:  (501) 785-6157

    Mr. David Humphrey, Director of Investor Relations
    Telephone:  (501) 785-6200

Treadco Contact:

    Mr. Randall Loyd, Controller
    Telephone:  (501) 788-6463


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission