For what it's worth, I'm running 285 PS2 on HRE 20x10" wheel rear for my summer setup, and 275 LM-60 on ZCP 19" wheel with a 12mm spacer for winter. Car is also lowered. No rubbing issues on either and still not enough traction!
2011 M3 ZCP | ESS VT2-650 | AKRAPOVIC EVOLUTION | 20" HRE P40 | BREMBO BBK | B&G SPRINGS
Future: M4 Competition Pack!