What to do if the brake disc wear is uneven

        Uneven wear of brake discs is one of the common problems in vehicle braking systems, usually manifested as uneven grooves, cracks or local wear on the surface of the brake disc, leading to shaking, abnormal noise or decreased braking force during braking. If not dealt with in a timely manner, it will not only affect driving safety, but may also further damage the braking system. The following is a detailed analysis of the causes, hazards, and solutions for uneven wear of brake discs.
        1、 Reasons for uneven wear of brake discs
        1.Poor quality or improper installation of brake pads may result in uneven contact between them and the brake disc due to inadequate material, hardness, or manufacturing process. In addition, improper fixation or necessary running in of brake pads during installation may also cause local wear.
        2. Quality issues with the brake disc itself. Uneven material, improper heat treatment, or uneven surface of the brake disc can lead to uneven wear during long-term use.
        3. Uneven force distribution in the braking system, poor piston return of the brake caliper, insufficient lubrication of the guide pin, or jamming can cause the brake pads to not evenly fit the brake disc, resulting in local wear.
        4. Improper driving habits such as frequent sudden braking, prolonged braking, or stopping immediately after high-speed driving can lead to local overheating of the brake discs and accelerated wear.
        5. Foreign objects entering the brake system, such as sand, dust, or other hard objects entering between the brake pads and brake discs, may scratch the surface of the brake discs and cause uneven wear.
        6. Vehicle suspension system problems: Suspension system deformation or shock absorber failure can cause the center of gravity of the vehicle to shift during braking, resulting in uneven force on the brake discs.
        2、 The hazards of uneven wear of brake discs
        1. A decrease in braking force and uneven wear of the brake disc can lead to a reduction in the contact area between the brake pads and the brake disc, thereby reducing the braking effect and extending the braking distance.
        2. Brake shaking and abnormal noise. Uneven wear can cause uneven surface of the brake disc, resulting in shaking or abnormal noise during braking, which affects driving comfort.
        3. Increasing the wear of other components and uneven wear of brake discs can accelerate the wear of brake pads, calipers, and other components, and may even lead to brake system failure.
        4. Severe brake disc wear may cause brake failure, especially during high-speed driving or emergency braking, posing significant safety hazards.

        3、 Methods to solve uneven wear of brake discs
        1. Check and replace brake pads. If the brake pads are severely worn or of poor quality, they should be replaced in a timely manner. Select high-quality brake pads that match the original vehicle and ensure proper installation. After replacement, it is necessary to run in to avoid sudden braking.
        2. Repair or replace brake disc - Minor wear: If the brake disc wear is minor, its surface flatness can be repaired by lathe machining (i.e. "disc"). -Severe wear: If the brake disc is severely worn (such as thickness below the manufacturer's specified minimum or cracks), it needs to be directly replaced with a new brake disc.
        3. Clean the brake system regularly by removing foreign objects between the brake pads and brake discs to avoid scratching the brake discs with hard particles. Special cleaning agents can be used to clean the brake system.
        4. Check and maintain the brake caliper. Check whether the piston and guide pin of the brake caliper are working properly, and lubricate or replace them if necessary. Ensure that the brake pads can evenly adhere to the brake disc.
        5. Adjust driving habits to avoid frequent sudden braking, especially after high-speed driving, slow down slowly and give the brake system sufficient cooling time.
        6. Check the suspension system. If you suspect that the suspension system is causing uneven wear on the brake discs, you should promptly inspect and repair any deformation or damage to the suspension system.
        7. Regular maintenance of the brake system: Regularly check the wear of brake discs and brake pads, and replace aging or damaged components in a timely manner. It is recommended to conduct a comprehensive inspection every 10000 kilometers or six months.
        4、 Measures to prevent uneven wear of brake discs
        1. Choose high-quality brake discs and pads and use original or well-known brand brake discs and pads to ensure that their materials and manufacturing processes meet standards.
        2. Proper installation and running in: When installing brake pads, ensure that their contact surface with the brake disc is flat and run in according to the manufacturer's recommendations.
        3. Avoid prolonged braking on long downhill roads and try to use engine braking to reduce the burden on the braking system.
        4. Keep the vehicle clean and regularly clean it, especially the wheels and braking system, to prevent foreign objects from entering.
        5. Regularly inspect the brake system. During each maintenance, check the wear of the brake discs and brake pads, and promptly identify and address any issues.
        Uneven wear of brake discs not only affects driving experience, but may also endanger driving safety. Therefore, car owners should pay attention to the daily maintenance of the braking system, regularly check the wear of brake discs and brake pads, and promptly repair or replace damaged components. At the same time, developing good driving habits and avoiding sudden braking and prolonged braking can effectively extend the service life of the braking system and ensure driving safety. If uneven wear of the brake disc is found, it is recommended to go to a professional repair shop for inspection and treatment as soon as possible to avoid further deterioration of the problem.