Ensure the wheels are cool to the touch. Turn the sprayer to the spray position and apply Wheel Cleaner Gel evenly across the rim surface from a short distance. Allow it to work for 3–5 minutes; the gel will change colour as it reacts with brake dust. For stubborn contamination, agitate with a dedicated wheel brush. Rinse thoroughly with a strong jet of water or a pressure washer until all cleaner residue is gone.