Short answer
If your brakes grind, have them checked as soon as possible and drive only short, slow trips until then. Grinding usually means the brake pads are worn out and metal is rubbing on the rotor, the metal disc inside the wheel. Braking gets weaker, and every stop damages the rotor more. If the pedal goes soft or sinks, or the car pulls hard to one side, stop driving and call a tow.
Safety first
A soft or sinking brake pedal, a red brake warning light or a burning smell from a wheel means the brakes may fail. Pull over safely with your hazard lights on and do not keep driving. Call for a tow or a mechanic who comes to you.
What to do when your brakes grind
1It grinds every time you brake
A growl or a metal-on-metal scrape when you press the brake pedal. Braking is weaker and gets worse with every stop.
Read all the steps
- It grinds every time you brake. A growl or a metal-on-metal scrape when you press the brake pedal. Braking is weaker and gets worse with every stop.
- The pads are worn down to the metal. A new pad has a thick layer that grips the rotor. A worn one has almost none left, so its steel back scrapes and scratches the rotor.
- Drive gently, and only to a shop. Short, slow trips with extra distance to the car ahead. Brake early and softly, and stay off the highway until it is fixed.
- Soft pedal or pulling hard? Stop, call a tow. Pedal soft or sinking to the floor? Car pulling hard to one side? Pull over with your hazard lights on and do not drive it.
- A mechanic replaces the pads, checks the rotors. If the rotors are scratched too, they get smoothed on a machine (resurfaced) or replaced. Many mobile mechanics do brake jobs in your driveway.
- Call a mechanic for a brake check Especially if: grinding or metal-on-metal noise when braking.
Mechanics near you
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What the noise tells you
- High squeal when braking: many pads have a small metal tab that squeals when they are getting thin. It is the warning: schedule the brake job soon.
- Grinding or growling: pads worn to the metal backing, metal on metal. Have it checked now.
- Grinding for the first few stops after rain or a car wash, then gone: light rust on the rotors, usually normal.
- Grinding even when you are not braking: a stone stuck in the brake, a worn wheel bearing or a bent dust shield. Have it checked.
Pads, rotors and what to tell the mechanic
Pads are meant to wear out and be replaced. If you fix them when they start to squeal, the job is usually just pads. Once they grind down to the metal, the rotors (the discs the pads squeeze) are often scratched and need to be resurfaced or replaced. Tell the mechanic when the noise happens: every stop, only at low speed, or only on one side. Ask to see the old pads and get the quote in writing.
When to call a mechanic
- Grinding or metal-on-metal noise when braking.
- The brake pedal feels soft, spongy or goes lower than usual.
- The car pulls to one side when you brake, or the steering wheel shakes.
- A brake warning light is on.
- A burning smell from one wheel after driving.
Frequently asked questions
Is it safe to drive with grinding brakes?
Only for a short, careful trip to get them fixed. Braking is weaker and gets worse. If the pedal is soft or a warning light is on, do not drive: call a tow or a mobile mechanic.
Why do my brakes grind after rain?
A thin layer of rust forms on the rotors when they get wet. It usually goes away after a few stops. If the grinding stays, have the brakes checked.
What is the difference between squealing and grinding brakes?
Squealing is usually the wear indicator, a small metal tab that warns the pads are getting thin. Grinding means they are already worn to the metal. A squeal means schedule it soon; a grind means get it checked now.
Do I need new rotors if my brakes are grinding?
Often, yes. Metal-on-metal contact cuts grooves into the rotors. A mechanic measures them: some can be resurfaced, while thin or deeply grooved ones get replaced.
Can a mobile mechanic change brakes at my house?
Often yes: pads and rotors are a common mobile job if there is a flat, safe place to work. If the pedal feels soft, it is also the safer choice, because you do not have to drive the car.