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Brake pad shims are thin, flat pieces of material, typically made of metal, rubber, or a combination of both, that are placed on the back of brake pads in a disc brake system. Their primary purpose is to reduce noise and vibration generated during braking, improve brake performance, and extend the life of the brake components. Here's how brake pad shims work and why they are important:
Noise Reduction: One of the main functions of brake pad shims is to dampen the vibrations and noise that can occur when the brake pads come into contact with the rotating brake rotor. Without shims, the metal-to-metal contact between the pad and the caliper can create squealing or squeaking noises, which can be annoying and potentially indicate a problem with the brakes.
Vibration Damping: Shims help absorb and dissipate some of the heat and energy generated during braking, reducing vibrations that can be transmitted through the brake system. This vibration reduction can contribute to a smoother and quieter braking experience.
Improved Brake Performance: By reducing noise and vibration, brake pad shims can help maintain consistent contact between the brake pads and the rotor. This can improve braking performance and pedal feel, ensuring that the brakes work effectively under various conditions.
Extending Brake Life: The damping effect of shims can also reduce the wear and tear on both the brake pads and the rotor. By minimizing vibrations and maintaining more stable contact, brake components may last longer before needing replacement.
Brake pad shims are typically installed on the back of the brake pads during the brake pad replacement process. They are designed to fit the specific brake caliper and pad combination used in a vehicle, and they come in various shapes and sizes. When replacing brake pads, it's important to inspect and, if necessary, replace the shims to maintain optimal braking performance and reduce noise.
While brake pad shims are not always found in every brake system, they are commonly used in many modern vehicles to enhance comfort, safety, and the overall braking experience.
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+86 153 7870 3202
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