UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 11 - K

ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

(Mark One)              

(X)  Annual Report  Pursuant to Section 15(d) of the Securities  Exchange Act of
     1934

                   For the fiscal year ended December 31, 2004

                                       Or

( ) Transition  Report  Pursuant to Section 15(d) of the Securities  Exchange
     Act of 1934

For the transition period from ________________ to 

Commission file number:  0-21318

     A.   Full title of the plan and the address of the plan, if different  from
          that of the Issuer named below.

                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

     B.   Name of issuer of the  securities  held  pursuant  to the plan and the
          address of its principal executive office:

                        O'Reilly Automotive, Inc. 
                        233 South Patterson 
                        Springfield, Missouri 65802







 

                              REQUIRED INFORMATION

     The following  audited  financial  statements  are being  furnished for the
O'Reilly Automotive, Inc. Profit Sharing and Savings Plan (the "Plan"):

     1.   Statements  of Net Assets  Available  for  Benefits as of December 31,
          2004 and 2003.

     2.   Statement of Changes in Net Assets Available for Benefits for the year
          ended December 31, 2004.


                                    EXHIBITS


Exhibit No.   Description
-----------   ------------------------------------------------------------------
           
23.1          Consent of Independent Registered Public Accounting Firm


                                   SIGNATURES

     The Plan.  Pursuant to the  requirements of the Securities  Exchange Act of
1934, the trustees (or other persons who  administer the employee  benefit plan)
have  duly  caused  this  annual  report  to be  signed  on  its  behalf  by the
undersigned hereunto duly authorized.


                                           O'REILLY AUTOMOTIVE, INC. 
                                           PROFIT SHARING AND SAVINGS PLAN 


                                           By:/s/ James R. Batten           
                                           -------------------------------------
                                           Executive Vice President and CFO   
                                           O'Reilly Automotive, Inc.        



                        Financial Statements and Schedule

                              (Modified Cash Basis)

                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

                 December 31, 2004 and 2003, and the year ended
                                December 31, 2004
          with Report of Independent Registered Public Accounting Firm


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                              Financial Statements
                                  and Schedule

                 December 31, 2004 and 2003, and the year ended
                                December 31, 2004




                                    Contents

Report of Independent Registered Public Accounting Firm........................1

Audited Financial Statements (Modified Cash Basis)

Statements of Net Assets Available for Benefits................................2
Statement of Changes in Net Assets Available for Benefits......................3
Notes to Financial Statements..................................................4

Supplemental Schedule
Schedule H, Line 4i - Schedule of Assets (Held at End of Year)................10



                                                                   
             Report of Independent Registered Public Accounting Firm

The Plan Administrators and Participants
O'Reilly Automotive, Inc.
Profit Sharing and Savings Plan

We have audited the accompanying statements of net assets available for benefits
(modified  cash  basis) of the  O'Reilly  Automotive,  Inc.  Profit  Sharing and
Savings  Plan (the  Plan) as of  December  31,  2004 and 2003,  and the  related
statement of changes in net assets available for benefits  (modified cash basis)
for the year  ended  December  31,  2004.  These  financial  statements  are the
responsibility  of the Plan's  management.  Our  responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  We were not engaged to perform an
audit of the  Plan's  internal  control  over  financial  reporting.  Our audits
included  consideration of internal control over financial  reporting as a basis
for designing audit  procedures that are appropriate in the  circumstances,  but
not for the purpose of expressing an opinion on the  effectiveness of the plan's
internal  control  over  financial  reporting.  Accordingly,  we express no such
opinion. An audit also includes examining,  on a test basis, evidence supporting
the  amounts  and  disclosures  in  the  financial  statements,   assessing  the
accounting principles used and significant estimates made by management, as well
as evaluating the overall financial statement presentation.  We believe that our
audits provide a reasonable basis for our opinion.

As described in Note 1, the financial statements and supplemental  schedule were
prepared on the  modified  cash basis of  accounting,  which is a  comprehensive
basis of accounting other than accounting  principles  generally accepted in the
United States.

In our opinion,  the financial  statements  referred to above present fairly, in
all material respects, information regarding the Plan's net assets available for
benefits  (modified  cash basis) as of December  31, 2004 and 2003,  and changes
therein (modified cash basis) for the year ended December 31, 2004, on the basis
of accounting described in Note 1.

Our audits were performed for the purpose of forming an opinion on the financial
statements taken as a whole. The accompanying  supplemental  schedule  (modified
cash basis) of assets (held at end of year) as of December 31, 2004 is presented
for purposes of additional  analysis and is not a required part of the financial
statements  but is  supplementary  information  required  by the  Department  of
Labor's Rules and  Regulations  for Reporting and Disclosure  under the Employee
Retirement  Income Security Act of 1974. This  supplemental  schedule  (modified
cash basis) is the  responsibility  of the Plan's  management.  The supplemental
schedule  (modified  cash basis) has been  subjected to the auditing  procedures
applied in our audits of the financial statements and, in our opinion, is fairly
stated in all material respects in relation to the financial statements taken as
a whole.

                                                           /s/ Ernst & Young LLP
Kansas City, Missouri
May 6, 2005

                                       1



                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

                 Statements of Net Assets Available for Benefits
                              (Modified Cash Basis)



                                                              December 31,
                                                      2004               2003
                                                   -----------------------------
 Assets:
                                                               
 Investments, at fair value (Note 3)               $97,451,057       $81,848,066
                                                   -----------------------------
 Net assets available for benefits                 $97,451,057       $81,848,066
                                                   =============================

 See accompanying notes.

                                       2



                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

            Statement of Changes in Net Assets Available for Benefits
                              (Modified Cash Basis)

                          Year ended December 31, 2004




Additions:
                                                     
Dividend and interest income                       $     984,020
Contributions:                                     
  Rollovers from other plans                             540,855
  Employer                                             4,287,523
  Employee                                             5,873,009
                                                   -------------
                                                      10,701,387
                                                   -------------
Net realized and unrealized appreciation
   in fair value of investments (Note 3)              10,354,533
                                                   -------------
                                                      22,039,940
Total additions


Deductions:

Distributions to participants                         (6,436,949)
                                                   -------------
Net increase                                          15,602,991
Net assets available for benefits, 
  at beginning of year                                81,848,066
                                                   -------------
Net assets available for benefits,
  at end of year                                   $  97,451,057
                                                   =============


See accompanying notes.

                                       3


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                          Notes to Financial Statements

                                December 31, 2004
 

1.   Summary of Significant Accounting Policies

The  following  is a  summary  of the  significant  accounting  policies  of the
O'Reilly  Automotive,  Inc. (the "Company") Profit Sharing and Savings Plan (the
"Plan"):

Basis of Presentation

The  accompanying  financial  statements have been prepared on the modified cash
basis of accounting,  which is a  comprehensive  basis of accounting  other than
accounting principles generally accepted in the United States. Under this basis,
contributions are recorded when received rather than in the period to which they
relate, and expenses are recorded when paid rather than when incurred.

Valuation of Investments

The value of investments in common and collective trusts,  registered investment
company  funds and  O'Reilly  Automotive,  Inc.  common stock is based on quoted
market values received from SunTrust Bank, Central Florida,  N.A.  (SunTrust) on
the last  business day of the plan year.  Participant  loans are valued at their
outstanding balances, which approximates fair value.

Administrative Expenses

The Plan pays all administrative expenses.

Use of Estimates

The preparation of financial  statements  requires  management to make estimates
and assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.

                                       4


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                    Notes to Financial Statements (Continued)

2.   Description of the Plan

The following  description of the Plan is provided for general information only.
Participants should refer to the plan agreement for a more complete  description
of the Plan's provisions.

The Plan is a defined contribution pension plan providing retirement benefits to
substantially  all  employees  of  the  Company  who  have  attained  age 21 and
completed six months of employment.  The Plan is sponsored by the Company and is
subject to the provisions of the Employee Retirement Income Security Act of 1974
(ERISA).

The  Plan  allows  participants  to  contribute  up  to  100%  of  their  annual
compensation  to the Plan up to $13,000  ($12,000  for 2003).  The  Company  has
elected to contribute 50% of each employee's voluntary  contribution up to 2% of
the employee's  compensation and 25% of the next 4% of each employee's voluntary
contribution.  Additionally, the Company may make voluntary contributions to the
Plan  annually,  as  determined  by its  Board  of  Directors,  up to a  maximum
aggregate  company  contribution of 15% of  participants'  annual  compensation.
Participants are eligible for these voluntary contributions after at least 1,000
hours of service in a 12 consecutive  month period of  employment.  All employer
contributions  are initially  invested in the O'Reilly  Automotive,  Inc.  Stock
Fund.  Participants may reallocate the employer  contribution  after the initial
investment.  Participants  may elect to allocate  their  contributions  to their
account  balances in various equity,  bond or fixed income funds or the O'Reilly
Automotive,  Inc.  Stock Fund, or a combination  thereof.  During the year ended
December  31,  2004,  the Plan  received  discretionary  contributions  from the
Company   amounting  to  approximately   $3,000,000,   not  including   matching
contributions.

Participants   are   immediately   vested  with   respect  to  their   voluntary
contributions.  With respect to employer contributions,  participants become 20%
vested  after two years of service with the  Company.  Vesting  increases in 20%
increments annually to 100% after six years of consecutive service.

Each participant's  account is credited with the participant's  contribution and
an allocation of the Company's  contribution  and Plan earnings.  Allocations of
Company  contributions are based on participant  contributions and compensation.
Allocations of Plan earnings are based on participants'  account  balances.  The
non-vested portions of terminated  participants'  account balances are forfeited
and such forfeitures serve to reduce future administrative expenses and employer
contributions.  At December 31, 2004 and 2003,  the Plan  retained  $606,369 and
$487,908 in forfeitures.

Participating  employees  are  entitled  to borrow  from the Plan the  lesser of
$50,000 or 50% of the employee's  vested account  balance at a rate equal to one
percentage point above the prime interest rate in effect, as reported in the The
Wall Street Journal, on the last business day of the

5


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                    Notes to Financial Statements (Continued)

2.  Description of the Plan (continued)

month prior to the date the loan is made. Loans are repaid by payroll deductions
over a period no longer than five years.

Although  it has not  expressed  any intent to do so, the  Company has the right
under the Plan to discontinue its contributions at any time and to terminate the
Plan  subject  to the  provisions  of ERISA.  In the event of plan  termination,
participants will become 100% vested in their accounts.

Benefit distributions are payable in monthly payments to the beneficiary or in a
lump sum,  as  elected by the  participant.  At  December  31,  2004,  and 2003,
terminated  employees  had  approximately  $84,258  and  $39,645,  respectively,
included in net assets available for benefits, which were to be paid in 2005 and
2004,  respectively.  The Plan pays all  administrative  expenses.  During 2004,
administrative   expenses   totaled   $570,221  and  are  included  in  the  net
realized/unrealized   appreciation   in  fair  value  of   investments   in  the
accompanying Statement of Changes in Net Assets Available for Benefits.

3.   Investments

At December 31, 2004 and 2003, the Plan's investments are held by SunTrust, in a
bank-administered  trust fund.  SunTrust has authority for the purchase and sale
of investments based on participant discretion,  subject to certain restrictions
as specified in the trust agreement and in ERISA.

The fair value of individual investments that represent 5% or more of the Plan's
net assets are as follows:




                                                          December 31,
                                                     2004             2003
                                                 -------------   -------------
                                                           
SunTrust common collective trusts:
  Classic Life Vision-Moderate Growth            $   5,664,086  *$   3,976,163
  Stable Asset Fund                                 10,512,080       9,814,175
  Classic 500 Index Fund                             6,714,302       5,945,203
Registered investment company fund:                                      
  O'Reilly Automotive, Inc. common stock:                               
  Participant Directed                              53,102,539      45,201,043
                                                                        
* Below 5% threshold

                                       6


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                    Notes to Financial Statements (Continued)

3.   Investments (Continued)

During 2004, the Plan's investments (including  investments purchased,  sold, as
well as held,  during  the  year)  appreciated  (depreciated)  in fair  value as
follows:



                                                       Net Realized And
                                                          Unrealized
                                                        Appreciation
                                                  (Depreciation) in Fair
                                                    Value of Investments
Year ended December 31, 2004
                                                    
  Stable Asset Fund                                    $    370,605
  Classic 500 Index Fund                                    576,426
  Classic Investment Grade Bond Fund                          7,377
  Classic Balanced Fund                                     120,901
  Classic Capital Appreciation Fund                         105,901
  Classic Life Vision-Moderate Growth                        80,034
  Classic Life Vision-Growth & Income                        17,538
  Classic Life Vision-Aggressive Growth                      46,038
  Franklin Small Cap Growth Fund                             93,121
  Fidelity Advisor Equity Income Fund                       132,300
  Templeton Growth Fund                                     228,064
  Fidelity Advisor Equity Growth Fund                         7,405
  MFS Research Bond Fund                                     (6,056)
  Classic Life Vision-Conservative                            2,039
  Classic Small Cap Fund                                    162,472
  Classic Small Cap Growth Stock Fund                        22,842
  Classic Mid-cap Equity                                    122,506
  Classic Value Income Stock Fund                           164,784
  American Century Value Advisor Fund                       (12,346)
  O'Reilly Automotive, Inc. common stock                  8,112,582
                                                       ------------
                                                       $ 10,354,533
                                                       ============



                                       7

                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan
                              (Modified Cash Basis)

                    Notes to Financial Statements (Continued)


4.   Income Tax Status

The  underlying  non-standardized  prototype plan has received an opinion letter
from the Internal Revenue Service (IRS) dated September 9, 2003 stating that the
form of the plan is qualified  under  Section 401 of the Internal  Revenue Code,
and  therefore,  the related  trust is tax exempt.  In  accordance  with Revenue
Procedure 2002-6 and Announcement  2001-77, the Plan Sponsor has determined that
it is  eligible  to and has chosen to rely on the  current  IRS  prototype  plan
opinion letter.  Once  qualified,  the Plan is required to operate in conformity
with the Code to maintain its qualification. The plan administrator believes the
Plan is being  operated in compliance  with the applicable  requirements  of the
Code and,  therefore,  believes that the Plan is qualified and the related trust
is tax exempt

5.   Related Party Transactions

Certain Plan investments are shares in registered  investment  companies managed
by SunTrust.  SunTrust is the Trustee as  described by the Plan and,  therefore,
these transactions qualify as party-in-interest transactions.


6.   Risks and Uncertainties

The Plan invests in various  investment  securities.  Investment  securities are
exposed to various risks such as interest rate,  market and credit risks. Due to
the level of risk associated with certain investment securities,  it is at least
reasonably  possible  that changes in the values of investment  securities  will
occur  in  the  near  term  and  that  such  changes  could  materially   affect
participants' account balances and the amounts reported in the statements of net
assets available for benefits.
 
                                       8




                              Supplemental Schedule
                              (Modified Cash Basis)





                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

                               Schedule H, Line 4i
                    Schedule of Assets (Held at End of Year)
                              (Modified Cash Basis)

                                December 31, 2004



       Identity of Issue, Borrower,              Number of                      Current 
        Lessor, or Similar Party                  Shares         Cost            Value
---------------------------------------         -----------    -----------    -----------
                                                                     
SunTrust common and collective trusts*:
  Stable Asset Fund                                            $ 7,395,446    $10,512,080

  Classic Capital Appreciation Fund                              2,368,987      2,351,703
  Classic Small Cap Fund                                         1,161,096      1,491,084
  Classic 500 Index Fund                                         5,771,419      6,714,302
  Classic Mid-Cap Equity                                           754,183        913,943
  Classic Small Cap Growth Stock Fund                              730,895        795,269
  Classic Value Income Stock Fund                                1,222,116      1,414,444
  Classic Life Vision-Moderate Growth                            5,568,404      5,664,086
  Classic Life Vision-Conservative                                   6,565          6,684
  Classic Life Vision-Aggressive Growth                            471,186        528,394
Registered investment company funds:
  Fidelity Advisor Equity Income Fund                            1,431,926      1,653,736
  Fidelity Advisor Equity Growth Fund                              265,138        292,159
  Franklin Small Cap Growth Fund                                   737,324        842,523
  Templeton Growth Fund                                          2,281,066      2,585,847
  American Century Value Advisor Fund                              839,950        898,537
  MFS Research Bond Fund                                         3,344,125      3,340,323
O'Reilly Automotive, Inc. common stock*           1,178,747     25,404,345     53,102,539
Participant loans (interest rates 
  ranging from 5.00% to 10.5%)                                          --      4,343,404
                                                -----------    -----------    -----------
                                                               $59,754,171    $97,451,057
                                                               ===========    ===========


* Party-in-interest to the Plan


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

                                  EXHIBIT INDEX

Exhibit No.     Description
-----------     ----------------------------------------------------------------
23.1            Consent of Ernst & Young LLP


                            O'Reilly Automotive, Inc.
                         Profit Sharing and Savings Plan

                                  Exhibit 23.1

            Consent of Independent Registered Public Accounting Firm

We consent to the  incorporation  by  reference in the  Registration  Statements
(Forms  S-8  No.  33-73892  and  No.  333-59568)   pertaining  to  the  O'Reilly
Automotive,  Inc.  Profit  Sharing and Savings  Plan of our report  dated May 6,
2005,  with  respect to the  financial  statements  and schedule of the O'Reilly
Automotive,  Inc. Profit Sharing and Savings Plan included in this Annual Report
(Form 11-K) for the year ended December 31, 2004.




                                                           /s/ Ernst & Young LLP

Kansas City, Missouri
June 21, 2005