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Grinding noise when braking
High — fix right away
You hear a loud metal-on-metal grinding sound every time you press the brake pedal. The sound usually gets worse the harder you brake.
Possible causes
- Worn brake pads — Most likely
Check first: Look through the wheel spokes at the brake pad. If the pad material is thinner than 3 mm, or you see bare metal, the pads are worn out. - Warped brake rotors — Possible
Check first: Pay attention to the brake pedal and steering wheel while braking. A pulsing pedal or a shaking wheel points to warped rotors. - Stuck brake caliper — Possible
Check first: After a short drive, carefully feel near each wheel without touching hot parts. One wheel much hotter than the others points to a stuck caliper.
Questions, answered
What usually causes this?
The most likely causes are: Worn brake pads; Warped brake rotors; Stuck brake caliper. If you are not sure what is wrong, have it checked by a qualified technician.
Is it safe to drive with this symptom?
No — stop driving and get it checked. This symptom can mean a serious problem.
Not repair advice. If you are not sure what is wrong, have it checked by a qualified technician. Cars differ by make, model and year.
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