Whether it is a new car on the road, or a vehicle that has driven tens of thousands or even hundreds of thousands of kilometers, the problem of abnormal brake noise may occur at any time, especially the sharp "squeaking" sound is the most unbearable. Indeed, abnormal brake noises are not all faults. It may also be related to the use environment, usage habits and the quality of the brake pads themselves, and does not affect the braking performance; of course, abnormal noises may also mean that the brake pads are damaged. The wear is close to the limit. So how does the abnormal brake noise occur?

1. Abnormal noise will occur during the running-in period of the brake disc:

The wear parts that generate braking force through friction, the friction surfaces between them have not yet reached a complete state of anastomosis, so a certain abnormal brake noise will be generated during braking. The abnormal noise generated during the running-in period, we only need to keep it in normal use. The abnormal noise will gradually disappear with the running-in between the brake discs. At the same time, the braking force will also be improved, and no separate treatment is required.

2. The presence of metal hard spots on the brake pads will produce abnormal noise:

Due to the metal material composition of this type of brake pads and the influence of craftsmanship, there may be some metal particles with higher hardness in the brake pads, and when these hard metal particles rub against the brake disc, the common sharpness will appear. The brakes sound abnormally.

If there are still other metal particles in the brake pads, abnormal brake noise may also occur during use. Choose higher-quality brake pads for replacement and upgrade.

3. The brake pads are seriously worn out, and the alarm pads will emit a sharp abnormal sound to prompt replacement:

The brake pads are the wear parts of the whole vehicle. Therefore, the vehicle brake system has its own set of alarm systems to warn the owner to replace the brake pads. The alarm-type early warning method will be issued when the brake pads are seriously worn. Sharp abnormal noise (alarm sound).

4. Abnormal noise may also occur if the brake disc is severely worn:

If the brake disc is worn seriously, the outer edge of the brake disc and the brake pad will become a circle of protrusions relative to the friction surface. At this time, if the corners of the brake pad and the outer edge of the brake disc are convex If friction occurs, abnormal noise may occur.

5. There is a foreign body between the brake pad and the disc:

The presence of foreign matter between the brake pads and the brake disc is one of the more common causes of abnormal brake noise. The foreign matter may enter the brake during driving and make a hissing sound.

6. Brake pad installation problem:

After the brake pads are installed, the calipers need to be adjusted. The assembly problems of the brake pads and the calipers are too tight, and the brake pads are not assembled correctly, etc., will cause abnormal brake noise.

7. Poor return of brake cylinder:

Rust in the brake guide pin or deterioration of lubricating oil will cause the brake cylinder to return poorly and cause abnormal noise.

8. Sometimes abnormal noise when reversing and stepping on the brake:

When reversing, the friction of the raised lines in the middle of the old disc changes, and it will make a clanging sound, which is also caused by uneven discs.

9. ABS brake anti-lock brake system start:

There will be a "chucking" sound during emergency braking, or the brake pedal will have a continuous "chucking" sound, and it will also be accompanied by the vibration of the brake pedal. This indicates that the ABS (Anti-lock Brake System) is activated. is normal.

10. Incorrect product formula or processing technology leads to unstable product performance and noise.