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Your Position: HOME > Company > How often should the brake pads be changed? what is the material composition of the brake pads?
CompanyCompanyThe replacement cycle of brake pads is not fixed. It is not only directly related to the service life of the brake pads, but also depends on the driving conditions of the car and personal driving habits. Generally speaking, the front brake pads are replaced every 30,000 to 50,000 kilometers, and the rear brake pads are replaced every 60,000 to 100,000 kilometers. When the car travels about 30,000 kilometers, check the front brake pads. After driving about 60,000 kilometers, check the rear brake pads. It is necessary to develop the habit of regular inspection and timely maintenance.
How to tell if brake pads need replacing
First, look at the thickness
Generally, the thickness of the new brake pad is about 1.5 cm. If it is worn to one-third, that is, when the thickness is less than 5 mm, it is recommended to replace it in time;
2. Listen to the sound
If there is a metal friction sound when braking, it may be that the brake pads are worn to the minimum thickness, and the limit marks on both sides of the brake pads touch and rub against the brake disc and make an abnormal noise, which needs to be replaced in time;
3. Look at the tips
Some models will have brake wear prompts. If the brake pads are worn too much, the sensing line will touch the brake disc, resulting in a change in resistance, which will generate current and detect a signal. There will be a brake pad warning light on the instrument panel.
Fourth, by feeling
If you feel that the brake pedal feels light, or you feel that the brakes are hard and cannot brake, it indicates that the brake pads are severely worn and the thickness is not enough, and they need to be replaced in time.
How to replace the brake pads
1. To replace the brake pads, you need to lift the car to remove the tires;
2. Remove the screw of the brake caliper, remove the brake caliper, and remove the old brake pad;
3. Push the brake piston back in and install the new brake pads;
4. Reinstall the brake caliper, screw the caliper screw to the required torque, and then install the tire back;
After replacing the brake pads on both sides, you will find that the brake fluid in the brake oil tank overflows. In this case, you need to step on the brake several times to keep the fluid level between max and min. The purpose of stepping on the brake is to eliminate the gap between the shoe and the brake disc and reset the cylinder piston. Check whether the brake oil pump is working normally and confirm that it is correct, that is, the brake pads have been replaced. Generally, the newly replaced brake pads need to have a running-in period. Only after the running-in period can they exert their braking effect better and more effectively.
The main function of the brake pads is to brake. Only by choosing good brake pads can they exert a good braking effect and improve the safety of driving. Brake pads have many materials, including the following:
1. Asbestos brake pads were first used on brake pads to increase strength. It is widely used because of its high temperature resistance and reasonable price.
2. Semi-metal brake pads are mainly made of metal materials to improve the strength of the brake pads. And its temperature control and heat dissipation ability have obvious advantages compared with traditional materials.
3. Low-metal brake pads, which have some similarities with semi-metal brake pads, have very fine fibers and particles, but their metal content is low, which can effectively improve the wear of the brake drum, and there will be no major impact. noise.
4. Ceramic brake pads, the density of this brake material is very small, which can resist high temperature and wear, and is also a new type of brake material. At the same time, it is also very environmentally friendly, has a long service life, no ash, no noise, etc., and is generally used in high-end models.