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Grinding noise when braking? What it means and what to do

A metal-on-metal grinding sound when you press the brakes almost always means the brake pads have worn down to the backing plate and are cutting into the rotor. Every mile you drive on them makes the repair more expensive.

Is it safe to drive?

Not safe. Grinding means little or no braking material is left — braking distance is longer and a pad can fail. Get it checked before driving further.

What to check first

  • Look through the wheel spokes at the pad thickness — under ~3mm means replace now.
  • Note whether it grinds only when braking (pads/rotors) or all the time (a stuck caliper or debris).
  • Check for a scored or grooved rotor surface — heavy grinding often ruins the rotor too.
  • Listen for which corner it comes from to localize the worn brake.

Typical repair costs

What the common fixes for this symptom usually run (parts + labor). Get an estimate for your exact vehicle free from the AI Mechanic.

brake pads $150–$350 brake rotors $300–$600

Related reading: the full walkthrough on the blog .

Grinding noise when braking: FAQ

What causes grinding noise when braking?

A metal-on-metal grinding sound when you press the brakes almost always means the brake pads have worn down to the backing plate and are cutting into the rotor. Every mile you drive on them makes the repair more expensive.

Is it safe to drive with grinding noise when braking?

Not safe. Grinding means little or no braking material is left — braking distance is longer and a pad can fail. Get it checked before driving further.

Do I need an OBD2 scanner?

For a confirmed diagnosis, yes — a scanner reads the stored trouble code. You can triage many symptoms by behavior first, but the code is what pins down the cause. The free AI Mechanic can interpret your code and symptoms for your exact vehicle.

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