In the automobile brake system, in addition to the brake pads, the brake disc plays another main role. The friction between the brake disc and the brake pad is used to achieve the purpose of braking the vehicle. As the car is used, the brake disc will be worn out. When worn to a certain degree, it needs to be replaced in time. Many car owners don’t know what the brake disc thickness standard is, so let’s take a look at it together.
The thickness of the brake disc is divided into front and rear. Generally, the thickness of the front brake disc is about 32 mm, and the thickness of the rear brake disc is about 28 mm. As the car brakes during use, the thickness of the brake disc will be worn. Generally, the wear limit thickness of the front brake disc is about 29 mm, and the wear limit thickness of the rear brake disc is about 25 mm. If the thickness of the brake disc is lower than this standard, the brake disc may be broken due to braking. replace.
Diagram of brake disc wear
You can touch the brake disc with your hand. If you feel that the brake disc groove is deep and the edges are sharp, you need to replace it. The thickness of the brake disc is also measured by a measuring tool. This is the most professional. Use a spiral micrometer to measure the brake disc. For the remaining thickness, when the total wear depth on both sides of the brake disc reaches 2mm, the brake disc needs to be replaced; some brake discs have a wear limit groove on the surface, and when the groove on the brake disc is worn flat, it needs to be replaced in time.
Generally speaking, the front brake disc needs to be replaced once when a car travels about 60,000 to 80,000 kilometers, and the rear brake disc is replaced for about 100,000 kilometers.
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