so there seems to be some miscommunication about the rolling diameter. Gary from tirerack said it's not the rev/mi we should be worried about but rather the actual diameters of the front/rear tires.
go to tirerack.com and get your tires added by size then click specs....compare the front overall dia and the rear overall dia. It is said to be at 0.0" difference is ideal, but up to 0.2" is okay.
2008 E92 335xi | Cobb AP Stage2+ | AR DP | ETS FMIC | ALUFELGEN SF-71 DC Blk | HANKOOK V12 | UUC SSK | H&R Coilovers | AE Exhaust |
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