Quote:
Originally Posted by lowside67
I will point out that there is not much of a performance difference between a 9" and 9.5" rim for 255-40-17s. However, there are a few classes including STX in autocross where a 9" is the largest possible wheel so this seems to make more sense. A 9.5" is still not really wide enough for a 275 so it's a bit of a waste in that sense. But don't bother with a 17x9 +45, there are already several inexpensive options available in that size, either go higher offset (48 is good but I think really more like 52 would make the most sense seeing as the 9.5 is +63) to make it properly fit the rear or don't bother IMO.
Mark
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Keep in mind that S2000 track guys are running 17x10 on 255's. Having the wider wheel on the same width tire helps keep it taut, and allows it to communicate better. In this instance, it would likely help the vague rear end feeling had by many people on the forums.