If you have not thought about this the more weight you add and the further out you place it the more performance in all areas and ride comfort you will lose and the difference can be very considerable. Ask yourself this, did you buy the car to drive or to get looked at, if to drive they go smaller diameter like 15 or 16, save the weight, put on really good tires, gain in all areas, acceleration, braking, cornering grip, ride, fuel mileage, less wear on the chassis, less chance of damaged rims, almost always costs less up front and for new tires as needed.