OK, so I decided to go ahead and put a spacer on the rear. I put on a 12mm and I think it's perfect. Not sure if I am going to put one on the front as I think it may be fine. But if your car is lowered at all you will want a spacer of some kind to fill out the wheel well.
MW F82 M4
Akrapovič Evolution, Vorsteiner V-FF 106, KW Clubsports, BMS JB4
Last edited by mcvaughan; 06-04-2014 at 10:29 AM.