1. Look at the thickness: the thickness of a new brake pad is generally about 1.5cm. With the continuous friction in use, the thickness will gradually become thinner. When the thickness of the brake pad is only about 1 / 3 of the original thickness (about 0.5cm) by visual observation. The owner needs to increase the self-test frequency and be ready to replace it at any time. Due to the wheel hub design, some models do not have the conditions for visual inspection and need to remove the tire.

If it is the latter, wait until the warning light is on and the metal base of the brake pad and the brake disc are in the iron grinding state. At this time, bright iron chips will be seen near the rim edge of the tire. Therefore, we suggest to regularly check the wear condition of the brake pads to see if they can be used, rather than just trust the warning lights.

2. Listen to the sound: if the light braking is accompanied by the silky sound or roar of "iron rubbing iron" (it may also be the effect of running in of the brake pad at the beginning of installation), the brake pad must be replaced immediately.

3. By foot feeling: if you feel very hard to step on, you often need to step on the brake deeper to achieve the previous braking effect, or you will obviously feel that the pedal position is low when taking emergency braking, then it may be that the brake pad has basically lost friction, and you must change it at this time.

common problem

Q: how often do you change the brake pads? A: Generally speaking, the replacement cycle of the front brake pad is 30000 km and the replacement cycle of the rear brake pad is 60000 km. There may be slight differences between different models.

How to prevent excessive wear?

1. In the process of going down steep slopes, reduce the vehicle speed in advance, use appropriate gears, and adopt the operation mode of engine braking and braking system, which can effectively reduce the burden of the braking system and avoid overheating of the braking system.

2 it is forbidden to turn off the engine when going downhill. Cars are basically equipped with brake vacuum booster pump. Once the engine is turned off, the brake booster pump will not only not play an auxiliary role, but also produce great resistance to the brake master cylinder, and the braking distance will be doubled.

3. When the automatic stop vehicle is driving in the urban area, the fuel shall be collected in time regardless of speed. If you apply the brake only when you are very close to the car in front, the brake pad loss will be very serious and fuel consumption will be very high. How to prevent excessive brake wear? Therefore, when the automatic stop vehicle sees a red light or congestion ahead, it should collect the oil in advance, which not only saves fuel, saves maintenance cost, but also increases the driving comfort.

4. When driving at night, when driving from bright to dark, the eyes need to adapt to the changes of light. In order to ensure safety, the speed must be reduced. How to prevent excessive brake wear? In addition, when passing through curves, slopes, bridges, narrow roads and places that are not easy to see, reduce the speed and prepare for braking or parking at any time to prevent accidents and ensure driving safety.