Originally Posted by Skywagon

For what it's worth. BMW does not put paint on it's calipers or hubs (?) (the part between the wheel and rotor). I found this out when I changed out my wheels exposing the system behind the stock wheels. I talked to the body shop at the dealer and he proceeded to show me the owners car. Same problem, light layer of rust. For $133. they painted the calipers and hubs silver. Man told me no guarantee and after looking at the calipers I know why. Quick cleaning job, not thorough. There are now two cans of caliper paint in my trunk and as soon as I have some time to get it into a shop I've used for years it will be properly done. Google "painting calipers". There are numerous ways to do it. Some even suggest powder coating. Problem with that is calipers have to be removed and taken apart. Car would probably be down for 3 days at least. I've owned Mercedes and Porches. They paint there calipers. Cost cutting?