Additionally, impurities stuck between the discs can also cause hard spots. This phenomenon does not affect brake performance and does not need to be repaired.

 

 

In order to determine if the brake pads are still serviceable, the depth of the groove should be carefully measured. If the depth of the groove is at or beyond the minimum limit of brake pad thickness, the disc should be replaced.

 

Brake pads are made of a synthetic material that does not contain iron. This will affect the color of the brake disc surface. Brake Pad Friction Surface Slight Rust The brake pad friction surface is exposed. When seldom used, the surface can develop rust when it encounters moisture, salt, dirt, etc. in the environment.

 

When you start using your brakes, they will clean themselves and may be accompanied by a brake noise. This noise is short-lived and does not affect the performance of the brakes and does not need to be repaired.