Is It Serious If the Brake Discs of a Sedan Rust?

[OAlivia]

Brake disc rusting is a normal phenomenon and does not affect braking performance, so no special treatment is required. Just drive normally. After applying the brakes a few times, the brake pads will wear off the rust, making the discs shiny again. This is because most household car brake discs are made of cast iron, which is prone to rust when exposed to water, but the rust only affects the surface. Below are methods to deal with rusty brake discs: 1. Slight Rust: If there is only slight rust on the surface, you can remove it by continuously applying the brakes while driving. However, this should be done safely and without affecting public traffic. While driving, gently apply the brakes to let the friction between the brake pads and the disc 'polish' the surface. 2. Severe Rust: If the rust is severe, it's best to take the vehicle to a repair shop, remove the brake discs, and use sandpaper to thoroughly clean the rust. Check the brake pads for any abnormalities, and after proper installation, conduct a road test. Drive on a flat road at a speed of 70km/h and perform multiple brakes to ensure there are no issues.