Why Does the Brake Make Abnormal Noises When Braking?

[OColton]

The reasons for abnormal noises when braking are as follows: 1. Mismatch between the brake pads and brake discs. As long as the vehicle does not deviate during braking, it can be driven normally. 2. There are foreign objects between the brake disc and brake pads. When stepping on the brake, it makes a noise, but pressing the brake firmly a few times will make the noise disappear. 3. The brake pads have worn to their limit. Brake pads are consumables with a certain thickness. When they wear down to a certain extent, metal particles can cause abnormal noises when braking, serving as a reminder to replace the brake pads. In such cases, it is essential to replace them as soon as possible. The braking system is crucial for driving safety and should not be ignored.

[SaraLynn]

I've seen a lot of cases where brakes make strange noises, mainly due to issues between the brake pads and discs during friction. If the brake pads wear too thin, the metal material inside will come into contact with the disc, producing a squeaky sound that's quite harsh on the ears. Additionally, if the brake disc is rusty or has uneven surfaces, it can also create odd noises, especially when driving in humid weather or after rain. Dust or small stones stuck in between are even more annoying, causing the brakes to squeal every time you use them. To avoid this, I recommend regularly checking the thickness of the brake pads—generally, you should inspect them around every 30,000 kilometers, and replace them if necessary. New cars might also produce slight noises during the first few drives, which is normal break-in wear; it usually goes away after a few days, so there's no need to worry too much. Safety comes first—if you hear unusual noises, it's best to get them checked at a shop to prevent the problem from worsening and affecting braking distance.

[Laila]

I used to frequently encounter squeaky brakes with my old car, and I've summarized a few reasons. The most common one is that the brake pads wear out over time, and the warning metal piece comes into contact with the rotor, producing a metallic friction sound that can be really annoying while driving. Additionally, if the brake rotor surface isn't smooth—like having scratches or dents—it can also cause squeaking, especially right after washing the car or when it rains, as moisture causes rust to form. Dust or small stones accumulating there are also key factors, as driving on gravel roads can easily bring debris into the brakes. My advice is to first check how much brake pad material is left during inspection; if it's below 5mm, replace it immediately. Then, look for obvious damage on the rotor and resurface it if necessary. Don't ignore strange noises—they might indicate reduced braking power, which can be dangerous in emergencies. Experienced drivers always say this issue should be addressed promptly.

[DiAbigail]

When I was driving my dad's car, I learned why the brakes were making noise. Simply put, the brake pads were either too old or too hard, causing friction with the brake discs that wasn't smooth, producing a sound like nails on a chalkboard. Also, if the weather is humid, rust can increase friction, making the noise even worse. If the car sits unused for too long, dust accumulates on the discs, causing a squeaking sound when you first start driving. As a beginner, I mistakenly thought the car was broken, but later a friend taught me to try spraying brake cleaner and pressing the brakes a few times, which usually fixes it. If that doesn't work, there might be small fragments stuck in the brake pads, requiring a visit to the repair shop for inspection. Normally, try to avoid sudden braking too often to extend the lifespan of the parts.