-3.7 is too much for for 275 RE's I had -3.7 after my first autocross alignment with 285 RE's and the inside of the tires were getting much hotter than the outside. I adjusted them to -3.1 for the following weekend and the temp across the tread was much more uniform. I settled for about -2.0 for the rear which seems to keep temps on the back pretty even. I am curious how my car will collect OPR, which may alter my preference. Also, I'm running about 6.2ish degrees of caster which will also make a difference.
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