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      11-09-2012, 01:07 PM   #2
M3SQRD
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Drives: E92 M3s,R56 CooperS,F22 228iX
Join Date: Jun 2009
Location: EC

iTrader: (2)

The stock 245/40-18 PS2 has a rolling diameter of 25.7". The 235/40-18 3D has a rolling diameter of 25.4" so the fender-to-wheel gap increases by ~0.15".

BMW M3 270M winter wheels are 18x8"et20 and they recommend running a square 235/40-18 winter tire setup.

Last edited by M3SQRD; 11-10-2012 at 07:06 AM. Reason: Typo