My brakes squeal or grind. What does it mean?
Some noises are harmless. Others mean metal on metal. How to tell the difference, and what to ask the shop.
The short answerA squeal on the first few stops of a damp morning is usually surface rust and harmless. A squeal every time often means the pads are nearly worn out. Grinding usually means metal on metal and needs a check straight away, because it damages the discs and makes the repair cost more.
Squeal, grind or pulse?
- Squeal on every stop: many pads have a small metal tab that squeals when they're nearly worn. Book a check soon.
- Grinding: often the pad material is gone. Get it looked at now.
- Pulsing pedal or shaking wheel when braking: the discs may be warped or uneven.
- Soft or sinking pedal: could be air or a leak in the brake fluid. Don't drive it far.
Pads or discs?
Pads wear first. Discs can sometimes be machined smooth, but if they're below the maker's minimum thickness they must be replaced. Ask the shop to show you the measurement.
Get the quote in writing
A fair brake quote lists the parts and labour separately. Compare it with the local average on Is my quote fair?
Questions drivers ask
How long do brake pads last?
Often 30,000 to 70,000 km, depending on the car and how you drive. City driving wears them faster.
Checked by Checked by a qualified automotive technician. Updated 5 September 2026.