The car brake disc is the core component of the car braking system, mainly made of cast iron, including components such as the disc and hub, friction is generated by the brake caliper clamping to achieve deceleration or stopping. The replacement standard is based on a wear limit of 2 millimeters, which needs to be combined with the frequency of brake pad wear and the uniformity of disc wear for a comprehensive judgment. Common sizes include 286, 300, 315, 320, 325, etc.
