How deep should the grooves on brake discs be before replacement?

1 Answers
Bilbo
07/29/25 11:15am
Brake discs should be replaced when the groove depth on both sides exceeds 1 millimeter. If the grooves on the brake discs are not deep, the brake pads can be removed and smoothed with coarse sandpaper. After reinstalling the sanded brake pads, the grooves on the brake discs can be eliminated during use. Alternatively, softer brake pads can be chosen; although they wear out faster, they are less likely to cause grooves on the brake discs. Simply put, a brake disc is a rotating disc that turns as the vehicle moves. The brake caliper clamps the brake disc to generate braking force, slowing down or stopping the vehicle when the brakes are applied. Brake discs offer effective braking performance and are easier to maintain compared to drum brakes.
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