Significant Accounting Policies (Tables)

12 Months Ended

Mar. 30, 2013

Significant Accounting Policies [Abstract]

Company's sales mix

	Year Ended Fiscal March
	2013	2012	2011
Brakes	15%	18%	18%
Exhaust	4	5	5
Steering	10	10	11
Tires	42	39	38
Maintenance	29	28	28
Total	100%	100%	100%

Weighted average fair value of options assumptions

	Year Ended Fiscal March
	2013		2012		2011
Risk-free interest rate	.53	%	1.11	%	1.52	%
Expected life, in years	4		4		4
Expected volatility	34.0	%	33.9	%	35.1	%
Expected dividend yield	1.14	%	1.03	%	0.93	%