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If you want a 12" wheel ideally offset for a 2" flared C5 quarter panel, think 45-50mm.
The OE 19x12" C6Z rear wheel is 59mm offset, and needs a spacer to fill out a widened C5.
bingo!
on an L5-equipped c5, the ideal rear wheel setup that i've found is 19x12 +43mm with a 345/30/19.
this is from taking a stock 19x12 +59mm C6 Z06 wheel and spacing it out 5/8" or 16mm.
i believe the TPE quarters are slightly wider so you'd have to go to about a +40mm-ish wheel.
Last edited by jdmvette; Feb 27, 2010 at 09:01 PM.
Thank you for the help so for the t2 fenders a 18x12 with a 40 mm is what I need? I also have the new. T2 fenders what offset do I need for the fronts?