Looking for 18" wheels to fit our cars available in Europe. What ET (offset) range would work? I know that comp wheels are 31 front, 25 rear and the M3 comes with 29F/23R 18"s, but how much can one go above or below those values while using M3 default rim widths (8.5" front, 9.5" rear)? For example, for the front would ET 38 be OK? (Stock suspension, stock tire width.) Thanks!
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