How to see whether the brake disc should be replaced, and how often should the brake disc be replaced?

The brake disc is an important component of the brake system. The car brakes are braked by the friction between the brake pads and the brake disc. If there is friction, there will be wear. If the wear is to a certain degree, it needs to be replaced in time, otherwise it will affect The braking effect poses a safety hazard. So, how do you see whether the brake disc should be replaced?

The replacement cycle of brake discs is related to the driving environment of the car and personal driving habits. According to normal driving conditions, generally the front brake discs need to be replaced once for 60,000 to 80,000 kilometers, and the rear brake discs need to be replaced only about 100,000 kilometers. We can judge whether the brake disc needs to be replaced by the following points:

1. Look at the thickness

The wear limit of the brake disc is about 2mm, whendiscoverWhen the edge of the brake disc becomes sharp or the surface has deep scratches, it needs to be replaced. Some brake discs have 3 wear limit grooves. When the grooves on the brake disc are worn flat, they also need to be replaced.

2. Dashboard lights

There will be a wear indicator on the dashboard of some models. When the brake disc or brake pads are seriously worn, the car dashboard will have a brake wear indicator. This also informs the owner that the brake parts need to be checked and replaced in time.

3. Refer to the brake pads

Brake pads wear fast, indicating that the braking frequency is high, and the wear of the brake discs will also increase. Generally speaking, the brake discs need to be replaced once to replace the brake pads twice.