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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Following this insight (forgot STX can only do 9", in STU, we have more leeway), if the 9" size ends up being popular choice, having an ET50 wheel would be largely plug and play in the rear, and a 15mm spacer to clear the strut up front.