Re: I had 18x8 with 225/40/18s........
But I probably would gone for a 7.5" wide wheel or 235/40/18s due to the fact that tire rim protector doesn't do anything to protect your wheels. The tirerack guys said that with the 235s it would rub with a full load or when lowered, but I think I will take the risk if I do it over a gain, because w/ 8" wide and 225s, the tires look a little thin and watch out for curbs!! I don't have the sport package and didn't lowered the car YET! so the ride is extremely comfortable. And remember to get a 35 offset or slightly smaller wheel offset to get those wheels flush with the fenders, my look great with 35.
look me in user review, in a couple of days.
john.