Rusty brake rotors have started to peek out behind the platinum alloy rims, thanks to the pandemic. Maybe it has been some time since you took the BMW out for a spin, and corrosion and rust are slowly invading the rotors. So what do you do?
Drive the Car
Rust will start to form when your car sits in one place for extended periods. Take the car out for a drive, and the superficial rust will fall off.
If some of the rust is still visible, move to the next step. Find a deserted street, drive up to 10 mph and brake hard. Repeat the process a handful of times and then check again. In case of stubborn rust, then you should try the next step that will require removing the wheel.
Physically Clean the Rotors
Although you can clean the rotors with the caliper and pads in place, removing them gives you much better access. This is also an excellent moment to examine for glazing and measure the thickness of the pads. If the depth is less than 4 millimeters, consider a replacement.
Use a brake cleaner spray and remember to put a tray below the brake rotors to catch any runoff. Give it time to dry, and then use a clean rug to wipe it. Repeat the process, and this time use steel wool together with the brake cleaner. Wipe it off and finish with a final shot of the spray.
Rotor cleaning should be conducted in a well-ventilated space.
If the brake rotors’ disassembly and assembly to give them a thorough clean seems a bit complicated, you can always come to A1 Performance European Auto repair. We will also be glad to check the brake rotors and other vital components, and repair them if necessary.