How often should car brake pads be replaced?

The replacement of car brake pads needs to be determined according to the use of the car

The principle of disc brakes is to use brake calipers to control two brake pads, clamp the brake disc on the wheel, and through friction braking, the brake pads become thinner and thinner. The thickness of a brand new brake pad is generally about 1.5cm. There is a raised mark on both ends of the brake pad, which is about 3mm. If the thickness of the brake pad is equal to this mark, it should be replaced immediately. If not replaced in time, the brake discs will be severely worn.

Brake pads can generally be used for 80,000 to 100,000 kilometers. When the brake pads are routinely inspected, look at the degree of wear of the brake pads. If it reaches the relevant critical point (the brake pads of most disc brakes, the thickness of the brake pads can be observed with the naked eye. When it is found that the thickness is only 1/3 of the original, you should observe the thickness change frequently), when it is parallel to the mark, you should replace it immediately. The replacement of disc brake pads is relatively simple. After removing the tire, loosen the Brake calipers, remove the brake pads, and then replace them with new ones. The whole process takes 5 minutes without any adjustments. Drum brake replacement is relatively difficult. You need to remove the wheel, and then remove the brake drum before you can adjust the brake pads. When replacing, pay attention to the overlap between the new brake pad and the brake drum. If the overlap is not done well, sometimes it needs to be polished. When assembling, the gap between the brake pad and the brake drum needs to be adjusted.

Frequently stepping on the brakes violently is actually a serious accident hazard. During driving, there are only two choices for the feet, refueling and stepping on the brakes. The frequency of stepping on the brakes has reached a very high level, and this leads to the need to change once every 20,000 to 30,000 kilometers. For brake pads, the correct driving method should be to keep your full attention at all times and keep your eyes on the six roads. If you find a problem, stop the oil and slow down in advance, and decide whether to step on the brakes according to the situation. This can not only save gasoline, but also prolong the life of the brake pads.

You can also judge whether the brake pads have been worn by listening to the sound. If you hear a sharp and piercing sound just after stepping on the pedal, it means that the thickness of the brake pads has been worn below the marks on both sides, causing the marks on both sides to directly rub against the brakes. plate. However, if the abnormal sound occurs after the brake pedal is stepped on in the second half, it is likely to be caused by the workmanship or installation of the brake pads or brake discs, and you need to check it in a car repair shop.

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