How often are the brake pads changed?
Composition of brake pads
Brake pads are also called brake skins, which refer to the friction material fixed on the brake drum or brake disc rotating with the wheel, generally composed of steel plates, adhesive insulation layers and friction blocks.
The steel plate should be coated to prevent rust; The insulation layer is composed of materials that do not heat transfer, and the purpose is heat insulation; When braking, the friction block is squeezed on the brake disc or brake drum to produce friction, so as to achieve the purpose of slowing down the vehicle brake, over time, the friction block will gradually be worn.
How often are the brake pads changed?
Some old drivers say that brake pads are generally 50,000 to 60,000 kilometers to be replaced, and some people say that 100,000 kilometers need to be replaced. In theory, when the car is driving, the life of the front brake pads is 20 to 40 thousand kilometers, and the service life of the rear brake pads is 6 to 100 thousand kilometers. However, it depends on different models, on-board weight, driving habits of the owner and other specific circumstances. Therefore, the best practice is to check the front brake pads every 30,000 kilometers on average, and check the rear brake pads every 60,000 kilometers.
Self-test method of brake pads
1. Look for warning lights. By replacing the warning light on the dashboard, the vehicle is basically equipped with such a function that when the brake pad has a problem, the brake warning light on the dashboard will light up.
2. Listen to audio prediction. Brake pads are mostly iron, especially after the rain prone to rust phenomenon, at this time stepping on the brakes will hear the hiss of friction, a short time is still a normal phenomenon, accompanied by long-term, the owner will replace it.
3. Check for wear. Check the wear degree of brake pads, the thickness of the new brake pads is generally about 1.5cm, if the wear to only about 0.3cm thickness, it is necessary to replace the brake pads in time.
4. Perceived effect. According to the degree of response to the brake, the thickness and thin of the brake pads will have a significant contrast to the effect of the brake, and you can experience it when braking.
Precautions for replacing brake pads
1. Replace the original quality brake pads as far as possible, only in this way can the braking effect between the brake pads and the brake disc be the best and wear the least.
2. When replacing the brake pads, special tools must be used to push the brake pump back. Do not use other crowbars to press back hard, which can easily cause the brake caliper guide screw to bend, so that the brake pad stuck.
3. After the replacement of brake pads, it is necessary to run 200 kilometers to achieve the best braking effect, and the newly replaced brake pads must be driven carefully.
4. After replacement, be sure to step on a few brakes to eliminate the gap between the brake pad and the brake disc, resulting in the first foot no brake, prone to accidents.
