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What are the causes of abnormal noise in motorcycle brake pads?

2 Answers

Brody

09/01/25 5:56am

There are many reasons, the specific reasons are as follows: Rusty brake pads: It may be that the brake pads are rusty. If the motorcycle has not been driven for a long time or the brake pads get wet and rust during driving, a relatively harsh abnormal noise will occur. It is recommended to go to a specialized motorcycle repair shop for repair. Worn brake pads: It may be that the brake pads are worn. Disc brake pads are prone to wear. When the brake pads are excessively worn, this phenomenon will occur. At this time, new brake pads must be replaced, otherwise the brake disc can easily be damaged. Special circumstances: Abnormal noise may occur after replacing the brake pads. If the brake pads have just been replaced, this is normal. However, if the abnormal noise persists after a period of use, it is abnormal. At this time, the brake pads should be replaced again, as the previously replaced brake pads may have quality defects, so new brake pads must be installed.

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LiamAnn

09/13/25 8:37am

I've been riding motorcycles for decades, and brake pad squealing is a common issue. The most frequent cause is small grains of sand or dust sticking to the brake pads, especially noticeable after riding in the rain—when the wheel rotates, the friction creates a squeaking sound. If the brake pads themselves are unevenly worn or the material has hardened due to high temperatures, they can also produce noise during friction. Sometimes, the caliper piston doesn't move smoothly, getting stuck and causing the brake pad to press against the disc at an angle, resulting in an even harsher sound. For safety, I never ignore these noises and regularly inspect the braking system: spraying brake cleaner and wiping the pad surfaces; checking wear patterns and replacing them if they're too thin. Cleaning thoroughly before long rides can save a lot of trouble. Inspecting more often in hot weather or after rain helps prevent squealing from turning into a safety hazard.

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