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      12-14-2012, 03:13 PM   #2
Bored at work....
schnell325's Avatar

Drives: '08 M3, '15 F80 M3 soon!
Join Date: Aug 2007
Location: BC

iTrader: (5)

From my quick calculations, the optimal one is a 275/40 18, not the 275/35.

stock 265/40 is 26.35" tall
275/35 is 25.58" tall
275/40 is 26.66" tall

Far less varience with the 40 aspects. I have the 275/40 18's (PS2s) on my rear.
'08 M3: AA G2L3, Catless X-Pipe & Sig Series Rear. AP rods. TC Kline EDC Coil Overs. MRF Alum Sub Frame Bushings. TMS Delrin Diff'l Bushings. BFI Motor Mounts. Recaro PP. BMW Perf Steering Wheel. P3 Gauge. PS Overflow Kit. APEX ARC-8 18"x9.5"/10.5". Conti Slicks 275/35F 305/30R. Stoptech Pads/SS Lines. Cantrell Brake Ducts.