hi, i have .....Audi A3 Tdi Sport (5 door sportback),im wanting to take off original 7.5x17'' wheels (ET56) and fit 18'' rs6 replicas....8x18 (ET45).

I was told (BY THE WHEEL PLACE) they will catch the rear arch's (the 18's) but others have told me there ok.

i thort id post here and see if you guys could tell me if there ok or there gona rub when car is got people in the back.

Also will i be able to lower the car ?