Auto Repair Encyclopedia
Sometimes referred to as Replace Brake Pads and Rotors, Replace Brake Pad and Rotor, Brake Pad and Rotor Replace, Brake Pads and Rotors Replace, Brake Pads and Rotors Replacement, Brake Pads Replacement, Pads Replacement, Pad Replacement, Brake Pad Replacement
Brakes are located at each wheel to slow or stop the vehicle.
Brake pads apply pressure to the brake rotors to slow or stop the vehicle. The brake rotor (or disc) is comparable to the rim of a bicycle tire. As the brakes are applied, brake pads come into contact with the brake rotor to slow the vehicle down. As with a bicycle, the harder the brakes are applied, the quicker the vehicle stops.
Brake pad material wears out over time. Brake pads should be periodically inspected for wear, which is highly variable depending on vehicle weight and driver habits. Brake pads must be replaced before the friction material is worn away completely. If it isn't, metal-to-metal contact will occur between the brake rotor and the worn-out brake pad. If metal-to-metal contact occurs, the brake rotor will be damaged, and it will need to be resurfaced or replaced.
The brake rotor is attached to the wheel, which must be removed to gain access to the brake rotor. The brake caliper must then be removed. In some cases, the wheel bearings may also need to be removed. To maintain optimum brake-operating efficiency, replace brake rotors as a set.
About this Repair: Brake Pad and Rotor Replacement
Recommendations
Shops will often refer to brake pad wear as a percentage of material remaining. Ask the shop to be specific about how much of the pad is remaining. We recommend that brake pads are replaced when there is 20% or less material remaining.
We recommend braking gently for the first 40 to 50 miles of driving on new pads. This will allow them to adjust to the rotors and help prevent squeaking.
Why this happens
Worn brake pads can result in a loud squeaking or grinding noise while driving, especially at low speeds. Replacing your brake pads early may prevent the brake rotors from being worn or damaged beyond repair.
Brake pads will wear out more quickly as they age. The second half of a brake pad will wear away more quickly than the first.
