What is Brake Pad Glazing

Resources All drivers should know about the dangers of brake pad glazing. Definition Glazing is caused when braking temperatures exceed the limits of the brake pad friction material. Glazing results in excessive stopping distances, and it can happen without the driver’s knowledge. Causes Glazing happens when temperatures exceed the brake pad limits. The pad material hardens and forms a glassy, smooth pad surface. Pads may also crack and fracture. When glazing occurs, brake pads can’t provide the necessary friction with the rotors to stop the vehicle. Stopping distances are compromised. Many times brakes will squeak under light braking conditions or vibrate and shudder during normal braking. There are several reasons for brake pad glazing. Repeated hard and rapid braking at higher speeds raises the temperature to the point where it exceeds the limit of the pad material. Driving with a foot on the brake pedal, called riding the brakes or dragging the brakes, keeps the pads in contact with the rotor. This constant rubbing spikes temperatures beyond the limits that passenger vehicle pads are designed for. Continuous application of the brakes when coming down a steep hill can result in glazing. Mechanical or hydraulic failure of the caliper can cause

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Brake Pad Friction Material Types

Resources Brake pads are manufactured with different friction material compounds. Each compound has advantages and disadvantages. Understanding these differences can help you purchase the right brake pad compound for your driving conditions and style. Organic Brake Pads Organic brake pad materials do not use metal. This type of brake pad is very gentle to brake rotors, causing minimal wear during their lifetime. These brake pads provide a softer or ‘cushioned’ feel through the brake pedal. They also tend to be less expensive. Because the compounds in organic pads are softer, they tend to wear out faster and need to be replaced more often. The organic pad material can coat the wheels and rims of the vehicle, leaving a black residue on the front wheels. Semi-Metallic Brake Pads Semi-metallic brake pad materials have been the mainstay of brake pads for many years. They offer a compromise between stopping capabilities and longer life. Because of the metal in the compound, these pads are not as gentle on the brake rotors, causing increased rotor wear. However, the rotor wear is balanced against the longer life and improved stopping capacity. Semi-metallic pads give a firm and controlled feel through the brake pedal. Though they

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