The most common cause for a vehicle to shake when the brake is applied is a worn or warped rotor. Other causes include bad shock absorbers, worn bushings or degraded suspension components.Continue Reading
RepairPal experts state that distortions as small as three or four one-thousandths of an inch in size can cause the brake pedal to pulse, and make the whole vehicle shake. The rotor works by clamping down on the wheel and applying friction to slow the vehicle down. A tremendous amount of heat is generated during this process, and temperatures can exceed 500 degrees. Over time, the exposure to heat wears away at the rotor. To determine if a worn rotor is the cause of the vibration, the rotors are measured for uniform thickness and run-out.
A damaged rotor is repaired by machining it on a brake lathe. Resurfacing the rotor eliminates defects causing the vibration, but also thins the surface rendering it more vulnerable to heat exposure. If the rotor is too badly damaged to machine, the mechanic will replace it. While the sensation is unsettling, according to Autohub360, the issue is more of an annoyance than a safety hazard because the brakes themselves are not affected. If the mechanic does not find distortions in the rotors, the problem may be due to worn bushings or wear and tear to the suspension.Learn more about Brakes
Disc brakes need to be changed when the brake pad is worn down and begins to rub against the brake rotor, resulting in a squealing noise. The noise is caused by a wear indicator attached to the brake pad.Full Answer >
An uneven rotor surface is the most common cause of pulsation that drivers feel in their brake pedal while braking. Tomorrow's Technician explains that the surface of brake rotors, sometimes called brake discs, should not vary any more than 0.001 inches around the entire rotor. This means that even the slightest variation in the surface of a rotor or disc is felt by drivers when braking.Full Answer >
When the brake pads come in contact with the brake rotor to slow and stop a vehicle, the pressure and friction occasionally cause a vibration that produces a squeaking sound. These squeaks are often normal, but they may also mean that the brakes are starting to wear out.Full Answer >
Factors that affect the cost of brake repairs include the make and model of the vehicle, whether or not it needs brakes or just brake pads, and whether or not the callipers, rotors or brake discs require replacement too. Whether front or back brakes require replacement may also affect the price of repairs. Costs for brake repairs vary widely among service centers, which makes it a good idea to shop around to find the best price on repairs.Full Answer >