Q: Front grinding when I brake but brakes are fine plenty of meat on then but disc has groove in them ?

asked by on

Grinding under braking at the front but brakes are like new the discs have a groove in them from age, could that cause grinding ? Thank you

This may be a sign of warped brake rotors. As you may know, when you press on your brake pedal, this activates a hydraulic pressure which forces small pistons inside your brake calipers to push the brake pads against the brake rotors which is what causes the stopping power you are familiar with. When this happens, an enormous amount of heat is generated due to the friction between the brake pads and rotors. As the brake rotors eventually cool down and then heat up again the next time you press on the brakes, over time this can cause them to warp slightly causing very small low spots on the surface of the brake rotor. When this happens and the brake pads are applied again to the rotors, this causes an uneven surface (on the rotor) to be applied to the flat surface brake pad, which can cause a vibration, shaking or very loud grinding sound. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your brake rotors.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Front grinding when I brake but brakes are fine plenty of meat on then but disc has groove in them ?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: when braking forcefully, when the rear end bounces back down it makes a bump bump noise from my suspension any ideas?

Have you checked to make sure your spare tire is secure? If it is, then you may be hearing the sway bar link arm bushings. Double check the shocks and strut upper mounts are secure. If you need help having...

Q: Advice on buying a 4-wheel drive vehicle with minor and major repairs

Minor are the stuff like brakes, water pump leaking, radiator caps with holes in them - stuff that doesn't cost that much to fix and what you can easily do by yourself. But, if the transmission or the engine have...

Q: I would like to collect brake pedal position information from my OBD2 port. Can this be done?

The brake pedal position does not have a specific wire to the OBD2 connector that can be monitored. You could however monitor the data stream and get the brake on or off PID in the data monitoring. The PID will...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...