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Will excessively hard car brake pads wear down the brake discs?

1 Answers

EmilyRose

07/29/25 4:40pm

Excessively hard car brake pads can indeed wear down the brake discs. If the brake feels very stiff after starting the vehicle, it may be due to a vacuum tube leak or a damaged vacuum pump. Immediate inspection and repair are required if the following conditions occur when braking. The master cylinder has one inlet valve and one return valve. When the brake pedal is released, the master cylinder piston return spring pushes the piston back. The master cylinder replenishes brake fluid through the inlet valve, with the replenishment volume exceeding the return volume, causing the pedal to become increasingly stiff with each press. Below are relevant details: 1. Brake pads, also known as brake linings, are the most critical safety components in a car's braking system. The effectiveness of all braking performance is decisively influenced by the brake pads. Brake pads are generally composed of a steel plate, a bonded heat-insulating layer, and a friction block. The heat-insulating layer is made of non-heat-conductive materials to provide thermal insulation. 2. The friction block consists of friction materials and adhesives. During braking, it is pressed against the brake disc or drum to generate friction, thereby achieving the purpose of decelerating and stopping the vehicle. Semi-metallic brake pads (Semi-met) primarily use coarse steel wool as reinforcing fibers and key compounds. They can be easily distinguished from asbestos and non-asbestos organic (NAO) brake pads by their appearance (fine fibers and particles), and they also exhibit a certain degree of magnetism. 3. Steel wool offers high strength and thermal conductivity, giving semi-metallic brake pads different braking characteristics compared to traditional asbestos brake pads. For example, semi-metallic brake pads have higher metal content and greater strength. The high metal content also alters the friction characteristics of the brake pads, typically meaning that semi-metallic brake pads require higher braking pressure to achieve the same braking effect.

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