what size tire are you running?? I would say 15mm that would still give your RIM 6mm of clearance in the front but thing you would want to also do the back b/c the front is going to look more aggressive then the rear. I would say do 12mm in the rear and you have about 7mm of clearance for your rim in the rear. Your tire should take care of the addition space and with the natural negative camber from having your car lowered will help prevent rubbing.
MSport front/ Hamann Front lip/ M3 Side Skirts/ Custom M3 rear bumper/ VRS Type 1 Rear Diffuser/ ACS style roof spoiler/ AC Schnitzer Pedals/ COBB / VRSF FMIC/ Simota CF Intake/ Magnaflow Axle Back/ AccuAir/UAS airbags/ 19" K3Projekt IND EV-5 wheels