How to Solve Brake Disc Rust, Do You Know?
2 Answers
The squeaking sound from car brakes is mainly caused by two reasons. One is that a stone is stuck in the brake disc, causing friction between the stone and the brake disc to produce the sound; the other is that the brake pads have exceeded their replacement period, leading to friction between the steel plate in the brake pads and the brake disc, which produces the sound. So, how to solve it? For the first scenario, the driver can forcefully press the brakes to expel the stone. If it cannot be expelled, it is necessary to go to a 4S shop or repair shop for handling. For the latter scenario, the brake pads or brake disc need to be replaced. What causes the squeaking sound when braking? Do you understand now?
This is a common issue I often encounter. As a veteran driver with nearly twenty years of experience, brake disc rust is actually quite normal, especially after rain or prolonged parking. Iron brake discs exposed to the elements easily rust when they come into contact with water. The solution is simple—most of the time, no extra steps are needed. Just drive a short distance and gently apply the brakes a few times, and the friction will wear off the rust. Once the brake pads and discs make contact, they naturally clear the surface rust layer, restoring performance to like-new condition quickly. If the rust is severe—for instance, if the entire disc turns red and starts peeling—manual sanding with sandpaper might be necessary, or you may need a mechanic to check if excessive brake pad wear is affecting rust removal. For prevention, park in dry areas, avoid prolonged exposure to rain, and regularly inspect the brake discs. Remember, minor rust isn’t dangerous—don’t waste money disassembling parts unnecessarily.
