When you drive often, the car will inevitably make abnormal noises. The performance of brakes is related to driving safety. If you do not pay attention, it may bring safety hazards. But in fact, there are many causes of abnormal brake noise. Not every abnormal noise represents a problem with the brake system. Some abnormal noises are only caused by weather, temperature or normal wear and tear, not faults. Today, Dongguan Ludi Auto Modification Technology -BMW modification, carbon fiber BMW modification parts production, BMW modification manufacturers will share with you the things related to "abnormal brake noise"!
Case 1: There is a "squeak" sound when the brake is applied. If it is a new car or just replaced the brake pads, it is very likely that the brake pads and brake discs have not been fully worn in, and sometimes there will be some slight friction sounds. As long as it is on for a while, the abnormal noise will disappear.
Case 2: After the rainy day, there will be a "boom boom" abnormal sound, which is because the brake disc and the brake pad are stuck together due to rust. Generally, after hitting the road, step on the brakes a few times to wear off the rust on the brake disc.
Case 3: Abnormal noise occurs when the brake enters the sand and gravel, and there will also be a harsh "hissing" sound. Don't panic, as long as you continue driving normally, the sand will fall out by itself, and the abnormal noise will disappear.
Situation 4: During emergency braking, you hear a "da-da" sound and feel a continuous vibration from the brake pedal. Many people worry about whether there is any hidden danger in the braking caused by the sudden braking. In fact, it is very likely that the ABS system has been triggered.
When the ABS is working, it is equivalent to braking at a very fast frequency. At this time, you will feel the strong vibration of the brake pedal, and at the same time, you will experience the sound of "da-da-da" from the brake master cylinder.
Summary: The above are the more common abnormal brake noises encountered in daily car use, and they are relatively simple to solve. It usually goes away on its own after a few deep slams on the brakes or after a few days of driving.
Abnormal noise of brakes
However, it should be noted that if you find that the abnormal sound of the brakes continues and you cannot solve it by pressing the brakes deeply, you need to go back to the 4S shop for inspection in time. After all, the brakes are the most important barrier for car safety, and you must not be careless.
Under normal circumstances, the abnormal brake noise that cannot be solved for a long time is mostly due to the excessive wear of the brake pads after driving for a long time, resulting in unnecessary gaps.
Of course, it is not ruled out that the material of the brake disc is improperly used, deformed, or the hardness, porosity, friction characteristics and compression characteristics of the brake pads are not qualified.
Summary: In this case, it is usually solved by replacing the brake pads; if the brake disc is damaged, it also needs to be replaced. When replacing, pay attention to the model, otherwise there will still be abnormal noises if they do not match.
When the brake pad wear indicator alarms, it means that the brake pads are approaching the wear value.
Summary: Under normal circumstances, the brake pads can still drive a certain number of kilometers after the alarm, but due to different road conditions and usage habits, the wear state is different, and the number of kilometers that can be driven will vary. It is recommended to drive the vehicle to the maintenance agency as soon as possible after the alarm is issued to replace the brake pads.