Im lookng at some rims but i still want to keep performance plus adding some looks. I want to get rims that are the same as stock 17x7 front 17x8.5 rear light wight rims But every one tell me to get 18x8 front and 18x9 rear. how much will change my car performance at all angles? What the best set up for what i want?

 

ap1 - 17x7 or 7.5 in front, 8 or 8.5 rear

ap2 - the same or 18's.