Brakes grind when applied

2000 VOLVO C70
84,000 MILES
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why do my brakes rumble when applied. Do I need to replace them and how?
Oct 17, 2012 at 7:22 PM
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SQM
  • ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

The brake pads, rotors and calipers are a normal wear item on all cars and responsible for slowing and stopping the car once it is in motion. If these items are neglected it can cause serious implications when applying your car's brakes due to the lack of brake material (metal on metal).
An indication for brake replacement is a squeaking or grinding noise when you hit the brakes. Also a chirping sound when the vehicle is rolling without the brakes being applied or a brake system warning light on which indicates the brake fluid is low.
Low brake fluid is an indication of needing brake pads because the fluid displaces the missing pad material in the calipers.

Here is a helpful article of brake pads and rotor replacement:

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor
https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

I have also attached diagrams of replacement procedure.

Please let me know of any questions.

Thank you.
Jul 19, 2021 at 10:48 AM
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