What is the Problem with Rusty Brake Pads?

1 Answers
AaronFitz
07/30/25 1:53am
Rusty brake pads are a normal occurrence, primarily caused by the material of the brake pads, but this does not affect the safety or normal operation of the vehicle and does not cause any issues. If the rust on the brake disc is minimal, it does not require special treatment; if the rust is more severe, it may cause vibrations or shaking during braking, such as brake pad vibration, steering wheel shaking, or body vibration. In such cases, the brake pads need to be replaced. Most car brake pads are made of cast iron. Long-term exposure to rain, snow, and harsh environments inevitably leads to surface rust. If the rust is minor, it can be worn away through regular braking. Additionally, friction between the brake pads and the brake disc can also remove rust after several braking cycles, restoring normal use. If the brake pads are severely rusted, the surface becomes uneven, causing shaking, increased wear, or scratches, which can affect the vehicle's braking performance and driving safety. In such cases, it is best to take the vehicle to a repair shop. The brake disc should be removed, and the rust should be cleaned off with sandpaper. After proper installation, a road test should be conducted to ensure there are no abnormalities in braking. It is important to note that sanding should not be too forceful or done too frequently, as this can thin the brake disc, affecting its performance and lifespan.
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