At what level of wear must brake discs be replaced?

[Alyssa]

Brake disc replacement standard is around 2 millimeters. If the brake disc wear exceeds this standard, replacement should be considered. More knowledge about brake discs is as follows: 1. Brake disc: Simply put, it is a round disc that rotates when the vehicle moves. The brake caliper clamps the brake disc to generate braking force. When braking, it clamps the brake disc to slow down or stop the vehicle. Brake discs provide effective braking performance and are easier to maintain than drum brakes. 2. Front disc rear drum: Braking systems include disc brakes, drum brakes, and air brakes, with many vehicles using front disc and rear drum configurations. Many vehicles now use disc brakes on both front and rear. Because disc brakes dissipate heat better than drum brakes, they are less prone to thermal fade during high-speed braking, resulting in better high-speed braking performance. However, during low-speed cold braking, the braking effect is not as good as drum brakes.