O'Reilly Announces 2007 3Q Earnings Date

Oct 2, 2007

Springfield, MO, October 2, 2007 – O’Reilly Automotive, Inc. (the “Company”) (Nasdaq: ORLY)
announces the release date for third quarter 2007 earnings as Tuesday, October 23, 2007, with a
conference call to follow Wednesday, October 24, 2007.