I think that if your car is like mine, it came with wheels. I kept them. They're round, they're very high quality (the stock 16s are a great wheel) and I can use 225s on them if I want to. To get 18s of comparable quality would cost roughly $1000 and the costs for rubber would increase also; it is likely weight would increase as well. Your call.Thanks It does I want to go with 18 inch rims though, what do you think?