The outer ring of the brake disc is rusty, can the brake disc be sprayed with rust remover

The brake disc is a very important part of the brake system. A friend's car has a situation where the outer ring of the brake disc is rusted, because some of the outer ring of the brake disc is not worn by the brake pads, and it is easy to be oxidized and rusted. In the situation, some friends asked, can the brake disc be sprayed with rust remover? Professionals said no need to spray.

Rusting of brake discs is actually a normal phenomenon. The brake discs of most cars are made of gray cast iron, which is prone to oxidation and corrosion. The brake disc can be sprayed with rust remover. It must be cleaned up. Do not spray it. Although the rust remover can remove the rust, if there is rust remover residue, it will affect the braking effect and cause the car to stop. . Others say that you can rub oil, nonsense, let alone use this method. Rust removal depends on what type of rust:

Slight rust: This can be polished off by normal brakes. There will be friction between the brake pads and the brake disc. After multiple braking, the rust can be eliminated and normal use can be restored.

Severe rust: When the brake disc is severely rusted, normal brakes cannot wear off the rust. The rust on the brake disc will make the surface of the brake disc uneven, causing the direction to shake and abnormal noise when braking. At this time, the brake pads can be removed and polished, but the service life of the brake discs will be shortened. It is best to replace the brake discs with new ones.