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Old 01-15-2013, 04:50 PM   #432
Scooby Specialist
Member#: 245581
Join Date: Apr 2010
Chapter/Region: MWSOC
Location: Marshall, MI
2009 WRX
2014 Forester XT


I think the subaru spec is the rolling circumference needs to be within 1/4". Not sure how that works seeing that my car came with a donut that is about 1" shorter than stock.

Do yer math and see if you're good. I think it's about 1/8" of tread wear will keep you in spec, which is about 20% of the life of most 10/32 tread tires.
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