Do brake discs need to be paired and replaced?

       Whether the brake disc needs to be paired and replaced is a common question, and the answer depends on the specific situation. Here are some key points and suggestions:
      1、 Do you need to pair and replace it
      General situation:
      No need for paired replacement: In most cases, brake discs and brake pads do not need to be replaced simultaneously. The service life of brake discs is usually longer than that of brake pads. For example, the front brake pads usually need to be replaced every 30000 to 50000 kilometers, while the front brake discs need to be replaced every 60000 to 80000 kilometers. The rear brake pads need to be replaced every 60000 to 80000 kilometers, and the rear brake discs need to be replaced every 100000 kilometers or so.
      Wear condition: If the wear of the brake disc is within the normal range and there are no obvious cracks, deformations, or deep scratches, the brake pads can be replaced separately.
      exceptional case:
      Severe wear: If the brake disc is severely worn, such as scratches or cracks deeper than 2 millimeters on the surface, it is recommended to replace both the brake disc and brake pads at the same time.
      Abnormal wear: If the brake disc and brake pads are unevenly worn, or if there are obvious unevenness on the surface of the brake disc, it is recommended to replace them at the same time to ensure braking performance and safety.

       2、 The necessity of pairing replacement
       Braking performance:
       Uniform wear: Simultaneously replacing brake discs and brake pads can ensure a uniform working surface of the brake system, improving braking performance and safety.
       Avoid abnormal noise: The contact surface between the new brake pads and the old brake discs may not match, resulting in abnormal noise or shaking during braking.
       Cost considerations:
       Economy: If the brake disc wear is not severe, replacing the brake pads separately can save costs.
       Repair costs: The price of brake discs typically ranges from $30 to $75 per disc, and it is estimated that $250 to $500 per axle (including labor costs) will be required.
       Whether the brake disc needs to be paired for replacement depends on its wear condition and the overall condition of the brake system. Within the normal wear range, brake pads can be replaced separately; But if the brake disc is severely worn or abnormal, it is recommended to replace both the brake disc and brake pads at the same time to ensure braking performance and driving safety.