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Grinding Noise When Braking

A grinding or scraping noise when braking usually means metal is touching metal: the pad lining is worn through, or something is caught between pad and disc.

Short answer · Can I keep driving with grinding brakes?

It is not recommended. Grinding usually means the pad lining is gone and the steel backing plate is cutting into the disc, so stopping distances get longer and the damage grows quickly. Drive only as far as needed at low speed, or have the car taken to a workshop.

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Safe checks you can do

  1. Listen when it happensGrinding only when braking points to pads and discs; constant grinding while driving can also be a stone in the brake or a wheel bearing.
  2. Look at the disc surfaceDeep grooves or a shiny ring on the disc show metal contact.
  3. Check the brake pedalA pedal that goes lower than usual or feels soft is a reason not to drive.Do not touch brake parts after driving: they can be very hot.

Questions that narrow it down

  1. Did the brakes squeal before?A squeal that turned into grinding fits pads that have worn through.
  2. Did it start after driving on gravel?A small stone trapped between disc and dust shield makes a constant scraping noise.
  3. Does it come from one wheel?One wheel suggests a seized caliper or a worn pad on that side.

Possible causes

Listed without ranking. Use the questions above to see which ones fit your car.

  1. Pad lining worn throughThe steel backing plate rubs on the disc.
  2. Stone or debris in the brakeTrapped between disc and dust shield.
  3. Seized caliper or slide pinsThe pad stays in contact and wears unevenly.
  4. Heavily rusted discsAfter the car has stood for weeks, rust can grind until worn off.

Questions about Grinding Noise When Braking

Why is it more expensive now?

Once the pad backing plate has cut into the disc, the discs usually have to be replaced as well as the pads.

Can a wheel bearing sound like grinding brakes?

Yes, a worn wheel bearing makes a growl or grinding that changes with speed and when cornering, even without braking.