Quote:
Originally Posted by tsk94
If the tire is wearing evenly and sticking well at ~42psi hot, then I wouldn't have an issue running them at that pressure myself. I know some people run hot pressures with these in the low to mid 30's, and while they will be fast at that pressure, they may not wear even if the tire is rolling over onto the sidewall excessively.
I think 38-40 hot for the porky E9x M3 is a good starting point for this tire given the recommendations from Hoosier. From there you can adjust accordingly. If you start to drop the pressure just monitor how the tire is reacting and how much it's rolling over. There should be a mark on the sidewall/edge of the tread to indicate the max you want the tire rolling over.
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ya what he said, also, take a mm or 32" depth gauge with you to check the divots for depth across the tire too (or just make one out of a piece of paperclip or something and a ruler with fine enough measurements) so you aren't relying on reading to see wear, as they can get some "groove of doom" center wear that isn't always immediately apparent from "reading" the tire
Also, if you're on a small roval like my local track, all bets are off for the outside tire, if your car is fast enough to be on the limit on the banking it's a survival game