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Old 10-15-2013, 09:00 PM   #5 (permalink)
TXSpeedDemon
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Minato is right, the difference is minimal. I tried to find set ups that were closest to the factory sport wheel diameter - i think the stock sports were 245/40 & 275/35. The 255/40 and 385/35 are both about 27" diameter (26.9 for fronts and 27 for rears) according to the tire calculators I used. So both fronts and backs went up as close to the same amount as possible.

I'm pretty sure I could run the 265/35 up front, certainly a 255/35 and a 30 series on the back. But I'm hoping to stick to a 40 profile up front and 35 profile in the rear to further reduce tire noise (will also be switching from Michelin Pilot Super Sports to Continental Extreme Contact DW or DWS).
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