On my 2008 E92 M3, dedicated track car with TC Kline double adjustable coilover system and Stop Tech Trophy BBK, I run Rays TE37 18x9.5 front, 18x10.5 rear but with 275/35/18 tires all around. There is very little understeer to scrub away. The car transitions seemlessly/effortlessly into oversteer....love it.
J
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