The brake operation of a car is completed by brake pads and brake discs. During the use of the car, the brake pads and brake discs will inevitably wear out. In fact, the brake disc has a wear limit sign, and we can judge how often the brake disc is changed based on this.
Some brake discs have 3 grooves on the surface, which are the signs of brake disc wear limit. When the grooves on the brake discs are worn flat, they need to be replaced in time. Some brake discs have no signs of wear. We can use a spiral micrometer to measure the remaining thickness of the brake disc. When the total wear depth on both sides of the brake disc reaches 2mm, the brake disc needs to be replaced. If there is no professional tool to measure the brake disc thickness The degree of wear.
If we do not have professional tools to measure the degree of wear of the brake disc, we can also touch the edge of the brake disc with our hands to judge the depth of the scratch. If the edge becomes sharper and the surface has obvious scratches, it means that the brake disc needs serious wear. Replace in time. Hot cars can't be touched directly, and they are easily burned.
Generally speaking, the front brake discs need to be replaced once for about 60,000 to 80,000 kilometers, and the rear brake pads need to be replaced for about 100,000 kilometers. The replacement of brake discs has a lot to do with the driving environment and driving habits. Driving in urban areas and mountainous areas, the brake frequency is high, the wear is faster, and the replacement cycle will be shortened. However, when driving at high speeds, the braking frequency is low, and the natural cycle is Will be extended.
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