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      10-04-2012, 11:33 PM   #3
Brigadier General
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Drives: '13 E92 M3
Join Date: Jan 2009
Location: Santa Barbara, CA

iTrader: (33)

8.5" is a width not a diameter.

245/40/18 fits the M3. It's the stock size in the front (on 18 x 8.5" wheels).

The ZCP brakes are no different than the NON-ZCP cars. 18" wheels are available OEM and fit the M3 if they are the correct offset / width.
'13 E92 M3 - Alpine Wht - Ohlins TTX, Fall-Line / SPL Suspension Arms, Eibach Sways, MRF Solid SF Bush, AP Racing Brakes (Essex), Cobra Seats w/BK Mount, Akrapovic GT4, CSF Cooling, VPhreaks Battery, OE M3 GTS - Lip and Interior, M235ir Wing, Varis Diffuser, BBS E88
'17 F31 M-Sport - 513M Wheels, H&R Springs
'Instagram - @slicer_m