I just had new Michelin PSS installed on Vader (2008 328i with stock sport suspension).
I can report that after pushing her hard through corners/curves with a passenger, there is no rubbing without a fender roll.
My setup is:
Front: 235/40ZR18, 18x8.5" rim, ET25 (ET 35 + 10mm spacer)
Rear: 275/35ZR18, 18x9.5" rim, ET35
Cheers!