I have a 98 328i and I currently have 18" wheels. I have 18x8" in the front and 18x8.5" in the rear. They will fit, however you will need to roll your fenders. I found under corning that the fender lip rubs aginst the tires when the body rolls. If your at stock ride hieght you will be fine, but if your lowered you will need to roll them.