How often should the brake disc be replaced?
The maximum wear limit of the brake disc is 2 mm. After the limit of use, the brake disc must be replaced with a new one. However, in actual use, most car owners do not strictly implement this standard. The replacement frequency should also be measured according to your own driving habits. The general measurement standards are as follows:
1. Look at the replacement frequency of the brake pads. If the pad replacement frequency is high, it is recommended to check the thickness of the brake disc more often. After all, if your pads cost more quickly, it means that you use a lot of brakes, so you should check the brake disc regularly.
2. Determine based on the wear condition: In addition to normal wear of the brake disc, there is also wear caused by the quality of the brake pad or brake disc and foreign matter during normal use. If the brake disc is worn by foreign matter If there are some relatively deep grooves, or the disk surface is unevenly worn (some places are thin, some are thick), it is recommended to replace it, because this kind of wear and deviation will directly affect our safe driving.
Generally, the front brake disc should be inspected every 60,000 kilometers and the rear brake disc should be inspected every 120,000 kilometers. The maintenance intervals specified by automobile manufacturers of different models are not exactly the same. The specific replacement period shall be subject to the requirements of the automobile manufacturer.
To what extent the brake disc is worn and needs to be replaced
You can judge by the following methods:
1Listen to the sound: If you lightly apply the brakes and are accompanied by the sound of “iron rubbing against iron” or a squealing sound (it may also be caused by the brake pads being installed at the beginning). The effect of running-in), the brake pads must be replaced immediately. Because the limit marks on both sides of the brake pad have directly rubbed against the brake disc, it proves that the brake pad has exceeded the limit.
In this case, when replacing the brake pads, you must also check the brake disc. When this kind of sound occurs, the brake disc is often damaged and scratched. At this time, even if you replace the brake pads with new ones, If the noise still cannot be eliminated, it is recommended to replace the brake disc in time.
In addition, some brake pads of poor quality have hard spots, which will also produce abnormal noise. Generally speaking, the abnormal noise produced in this way will disappear after being worn away for a period of time.
2Check whether the brake disc warning light is on
Generally, the indicator light is off. When the brake disc fails or This light comes on when there is excessive wear and turns off after repair. When the warning light comes on, the brake disc has been worn to the limit and the braking effect has declined, which greatly affects driving safety. Therefore, we recommend regularly checking the wear condition of the brake disc to see if it can be used instead of just trusting the warning light.
3Look at the thickness
Most brake disc products have wear indicators, which are 3 indicators distributed on the disc surface. Small dents. Use a vernier caliper to measure the depth of the pit to be 1.5mm. In other words, when the total wear depth of both sides of the brake disc reaches 3mm, we recommend replacing the brake disc in time.
Of course not all brake discs have wear indicators. We can judge the approximate depth by touching the outer edge of the plate with our fingers. Generally speaking, if the total wear depth of both sides of the brake disc reaches 3mm, the brake disc should be replaced in time.
4. Brake sound
When braking, a sharp sound occurs, and the braking effect is poor. Even if the brake pads are replaced, it still cannot be improved. At this time, , it should be that the brake disc is deformed due to long-term braking or frequent braking on long slopes and high temperature. The surface is burned and the hardness becomes larger and makes noise. The brake disc should be checked and replaced.
5. Brake jump
When braking, if At the scene where tire jumping occurs, check whether the brake disc is deformed. If it is deformed, it must be replaced.
In addition,When the brake discs (drums) on both sides use different Different brands of specifications result in different friction effects, resulting in different braking effects on both sides, which will lead to adverse consequences such as brake deviation, poor braking effect and long braking distance. Therefore, it is recommended that coaxial brake pads (shoes) on both sides ) at the same time to ensure the same braking effect.
If the website content violates your rights, please contact us to delete it。
