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Old 12-10-2012, 01:19 PM   #2549
Scooby Newbie
Member#: 234424
Join Date: Jan 2010
Location: Mid-Ohio
2006 Evolution RS


I ran 255/40 in SMS locally one year (Street mod street tire) then went to STU in 2011, same wheels, but 245/40 Z1s.. incredible difference, and speaking with a tire tech with Goodyear (Dunlop parent company)... the 255 uses a different carcus and compound than the 245. sizable weight difference too if you notice. (3-4lbs/tire).

Don't ask specifics of the difference, I have known and trust the guy a while, so I didn't dig for every last detail.
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