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      12-07-2012, 12:30 PM   #2
Finnegan
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Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

iTrader: (22)

Rear offset of 22-25 (10-12mm spacer rear) for a 9.5 ET35 would be good.

Tires are another question. The 255/35 size has a 3.66% difference in diameter to stock front tire sizes whereas the 265/35 is under 3% difference. Rule of thumb I've always heard is to stay within 3% for ABS/DSC. But assuming you're running with those off on the track, I doubt it's a variable.

It may come down to driving style and preference. The largest plus of the square 265 set up is that with the same front/rear wheel sizes you can rotate front to rear to level out wear.

A 265 front is going to have almost .5" more section width than the 255 tire, which probably means better heat dissappation (if driving close to the limit with higher slip angles). A bit less grip rear, a bit more front as well (hence style).

The 255/275 sticks more to the stock stagger (but 20mm, not 30mm stagger). 275 has a bit more section width as well. This does affect driving dynamics a bit.

I think others with experience with the different sizes and more track experience than me will need to kick in more to this discussion.
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