GW Optical Wheel Cleaner. It’s safe for use on all tires and wheels. Not only does it renew the original beauty and lustre to the tires surface; it does is quickly and safely! frequent use will not damage or abrade the tire surface. It leaves the wheels with and amazing shine as it easily removes, road tar, brake dust, grease, grit and grime. Even the harshest sidewall sludge and scuffs are no match for GW Optical Wheel Cleaner! GW Optical Wheel Cleaner uses special optical brightness to give your wheels the perfect finish!