
Brake discs with grooves must be replaced. Here is relevant information about brake discs: Structure: Vented discs, also known as air duct discs, are categorized into solid discs (single-disc) and vented discs (double-disc). Function: Brake discs are used for braking, with the braking force originating from the brake caliper. Typically, standard brake calipers have a fixed inner section where the piston pump is located, while the outer section features a clamp-style structure. The inner brake pad is fixed to the piston pump, and the outer brake pad is fixed to the outer part of the caliper. The piston is pushed by the pressure from the brake fluid line, moving the inner brake pad, while simultaneously pulling the caliper via reaction force to bring the outer brake pad inward. Both pads then press against the brake disc, generating braking force through friction between the disc and the inner and outer pads. In this process, the piston is actuated by brake fluid, i.e., hydraulic oil, which is powered by the engine.


