What's the matter with the uneven grinding of the car brake shoe

The reasons for the unevenness of the brake shoes of the car are as follows:

1. Driving habits: The owner's usual driving habits are not good, resulting in uneven brake shoes;

2. Foreign matter: foreign matter is caught between the brake disc and the brake shoe, and the owner steps on the brake with a big foot, resulting in grooves on the brake shoe;

3. Brake cylinder: The force of the brake cylinder is unbalanced during braking, resulting in grooves on the brake shoes;

4. Defects in the manufacturing process: resulting in uneven mixing of materials, resulting in excessively hard brake pads or large metal particles in the brake pads.