I have the simple plastic lug covers. They work fine as you can't get aftermarket lugs that are the washer type that will work with the stock rays. The aftermarket lugs are acorn style and they are not safe to use on the Sport Rays. The plastic caps work fine IMHO. Here is a shot after a recent trip to the Tail of the Dragon. Forgive the brake dust on the wheels but we had been having a bit of fun!