Using brake cleaner on painted calipers can be risky and may damage the paint. Brake cleaners are designed to remove oil, grease, and brake dust from braking components, not to clean or protect painted surfaces. The strong solvents in brake cleaners can be harsh on paint and may cause it to fade, peel, or crack.
If you need to clean painted calipers, it's best to use a mild soap and water solution or a designated automotive detailing product that is safe for painted surfaces. Avoid abrasive tools or harsh chemicals that can harm the paint. Gently scrub the calipers with a soft brush or cloth and rinse thoroughly with clean water.
If you're dealing with stubborn dirt or grime on painted calipers, consider using a specialized wheel cleaner that is safe for painted surfaces. Always test the product on a small, inconspicuous area first to ensure it doesn't cause any damage before applying it to the entire caliper. Additionally, regularly applying a high-quality wax or sealant to the painted calipers can help protect them and make future cleaning easier.