MEGUIAR'S® G180124 Ultimate All Wheel Cleaner delivers MEGUIAR'S® most powerful wheel-cleaning performance. It is safe on all wheel types and painted brake finishes. The advanced chemistry blends both road grime-attacking cleaners and active brake dust-dissolving agents for the ultimate clean. This deep-cleaning gel formula turns either purple as it dissolves brake dust, or brown and green as it dissolves road grease and grime, making it easy to gently scrub and rinse away. This acid-free formula is safe on all wheel types, including uncoated aluminum, painted, chrome and powder coated, as well as all painted brake components.