Exhibit 12.1

O’Reilly Automotive, Inc.

Computation of Ratio of Earnings to Fixed Charges

	Six Months Ended June 30,						Fiscal Year
	2012			2011			2011			2010			2009			2008			2007
Earnings
Income before income taxes	$	474,862		$	383,156		$	815,773		$	689,373		$	496,898		$	302,532		$	307,488
Fixed charges		66,030			58,112			121,157			132,210			138,920			83,266			27,590
Less: Capitalized interest		(2,613	)		(2,378	)		(4,666	)		(5,133	)		(6,715	)		(2,318	)		(2,554	)
Adjusted earnings	$	538,279		$	438,890		$	932,264		$	816,450		$	629,103		$	383,480		$	332,524
Fixed charges
Interest expense	$	20,243		$	13,342		$	31,378		$	35,847		$	43,383		$	24,372		$	6,197
Amortization of debt issuance costs		641			530			1,453			8,559			8,508			4,084			80
Interest portion of rent expense		45,146			44,240			88,326			87,804			87,029			54,810			21,313
Total fixed charges	$	66,030		$	58,112		$	121,157		$	132,210		$	138,920		$	83,266		$	27,590
Ratio of earnings to fixed charges		8.2x			7.6x			7.7x			6.2x			4.5x			4.6x			12.1x