What Causes the Squealing Noise from Car Brake Pads?

1 Answers
StEmmanuel
07/29/25 10:32am
The reasons for the squealing noise from car brake pads: 1. The brake pad shim lacks lubricant, or it might not have been installed properly. This is an installation issue and can be resolved by reinstalling it. 2. The brake pad is misaligned. If upon removal, you notice that only part of the brake pad surface shows signs of friction, this is likely the cause. Again, this is an installation issue and can be fixed by reinstalling. 3. Issues with the product itself, such as inconsistent size of the brake pad friction blocks, large metal particles on the brake pad surface, or the surface oxide film not being worn off. Additionally, the brake pad material may be too hard or of poor quality. It is recommended to first check if the size is appropriate. If the size is correct, try removing and regrinding the pads. If the problem persists, replacement may be necessary.
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