Wolfgang Concours Series WG-4600 Tire and Wheel Cleaner, 16 fl. oz. Wolfgang tire &amp; wheel cleaner is biodegradable, non-toxic, non-caustic, and gentle on skin. Safe to use on all kinds of wheels-including aluminum, painted, polished, Anodized, clear coated and billet wheels. Contains emulsifiers, wetting agents and environmentally safe deep cleansers to loosen and remove all foreign particles clinging to your tires and wheels.