What is the reason for the abnormal noise of the brake disc? How to solve it

       Brake disc abnormal noise is a common problem in the use of automobiles, which not only affects the driving experience but may also indicate safety hazards in the braking system. Here are some common causes of brake disc noise and corresponding solutions:
       1、 Common causes of brake disc noise
       Brake pad wear: When the brake pads wear to a certain extent, the alarm iron pin on them will rub against the brake disc, producing a sharp metal friction sound. This is a self reminder mechanism of the braking system, reminding the car owner to replace the brake pads.
       Uneven surface of brake disc: The brake disc may experience uneven wear or deformation after long-term use, resulting in poor contact between the brake pads and the brake disc, leading to abnormal noise.
       Foreign objects entering the brake system: During driving, foreign objects such as sand and small stones may enter between the brake disc and brake pads, producing friction sounds during braking.
       Brake caliper problem: Worn brake caliper pins or detached spring plates may cause prolonged contact between brake pads and brake discs, resulting in abnormal noise.
       Brake pad installation issue: Improper installation of brake pads, such as tight or reversed assembly with calipers, can also cause abnormal noise.
       Material issue of brake pads: There may be metal particles with higher hardness inside the brake pads, which can produce sharp noises when rubbed against the brake disc.

       2、 Methods to solve the abnormal noise of brake discs
       Check and replace brake pads: If the brake pads are excessively worn, they should be replaced with new ones in a timely manner. Meanwhile, it is recommended to choose high-quality brake pads to reduce the occurrence of abnormal noise.
       Clean the surface of the brake disc: Check for any foreign objects on the surface of the brake disc, and if so, use compressed air or a clean cloth to remove them.
       Polishing or replacing brake discs: For situations where the surface of the brake disc is uneven or severely worn, disc processing can be performed to restore its flatness; If the wear is too severe, a new brake disc needs to be replaced.
       Check and repair brake calipers: Check the brake calipers, and replace the relevant components in a timely manner if there is wear on the movable pins or detachment of the spring plates.
       Reinstall brake pads: If the brake pads are not installed properly, they should be reinstalled and ensure that they fit correctly with the calipers.
       Choose suitable brake pads: Choose brake pads that match the vehicle to avoid abnormal noise caused by material issues.
       Lubrication brake system: Applying an appropriate amount of specialized lubricant to the active joints of brake components can improve their flexibility and reduce friction noise.
       3、 Daily maintenance suggestions
       Regularly check the brake system: Develop the habit of regularly checking the brake system by observing the stroke of the brake pedal and feeling whether the braking force is normal to determine if there are any problems with the brake system.
       Maintain good driving habits: try to avoid sudden braking and reduce wear and tear on the braking system.
       Choose reliable brake components: High quality brake pads and discs can effectively reduce the occurrence of abnormal noise and improve driving safety.
       The braking system is related to driving safety. If the problem of brake noise is serious or the cause cannot be determined by oneself, it is recommended to go to a professional car repair shop for inspection and maintenance in a timely manner.