Quote:
Originally Posted by JNoSol
Does 11" fit the rear? If so, match the wheel/tire specs from a Porsche Panamera Turbo S for the 20s. This is important b/c the rotational distance need to be the same for the front and rear on xDrive. The Panamera Turbo S has AWD (with 20s) so that should help get close to the correct setup. On setup, I would go with Forgestar or other custom wheels to ensure flush fitment and offset. I don't like messing with spacers. 
I don't think you can use the RWD setup from the M5. |
I confirmed that our cars do fit 11" rear. So the setup as follow - 20x9.5 in the front and 20x11 in the rear. Tire size is 255 35 20 front, 285 30 20.
A less aggressive setup is 20x9 front / 20x10.5 rear - Tire size 245 35 20 front / 285 30 20 rear. (this closer to what is needed for xDrive - front / rear is almost 0% error)
http://www.willtheyfit.com/index.php...et2=20#content