Have we bought a new car and thus immediately the correct washing cleaning supplies for your car and wheels. Was also tried out immediately on the new alloy wheels. Spray short, act about 3 minutes (dirt, brake dust is reddish but is so desired) and then best spray off with a hose! The rims are really sparkling clean. Was recommended to us by a professional when buying a car! We then rubbed with a cloth again dry. 5 Stars!