What to Do About Brake Pad Noise?

[DiHeidi]

Here are the causes and solutions for brake pad noise: 1. Warped Brake Disc: Similar to long downhill braking in summer, prolonged braking can cause overheating and deformation of the disc. Symptoms include noise when the disc rotates and rubs against the brake pads. Additionally, oil or dirt on the disc that is not cleaned in time can also cause noise between the disc and pads. Use a disc wrench to slightly adjust the disc. If there is contact between the wrench and the disc at any point, it indicates severe disc deformation, and the disc should be replaced promptly. 2. Improperly Adjusted Caliper: Currently, the mainstream mounting method for mountain bike disc brakes is the direct A-post installation, but the screw holes are prone to stripping. Some use the older B-post adapter installation, which avoids stripping but complicates the adapter positioning. If the caliper is not properly positioned, it directly causes friction between the disc and pads. Tighten the screws and rotate the wheel to resolve the issue.

[Stone]

Once when I was driving, my brakes kept squeaking, which really bothered me. After checking, I found out there could be several reasons: the most common one is that the brake pads are almost worn out, and the metal indicator scraping against the rotor causes the screeching sound; or it could be dust and metal shavings stuck between the pads and rotor, like little stones, causing that harsh noise. I suggest checking it yourself first: listen to whether the sound is a screech or a grinding noise. If it's a screech, it's time to replace the pads; if it's a grinding noise, washing the car and cleaning the brake area might help. Don’t take it lightly—this is about safety. Imagine how dangerous it would be if the brakes failed at high speed. I went to a trusted repair shop for an inspection, and after replacing the pads, the problem was solved. I also learned a little tip: spraying some brake cleaner after daily use can prevent unusual noises. Remember, addressing it promptly saves both money and hassle. If you delay, the brake rotors could also wear out, making repairs even more troublesome.