Brake Squeal – What it Means

Source: Washington Times-Herald post aimed at providing the average consumer with information about their vehicle’s brake performance.

WASHINGTON, Ind. – The only noises many drivers ever want to hear coming from their vehicles are the sounds of their favorite songs blasting from their car stereos. But cars sometimes make noises that aren’t nearly as inviting as music.

Noises that seem to pop up when applying the brakes can be especially scary for motorists. No one wants to drive a vehicle with faltering or suspect brakes, so learning to distinguish between the two most common brake noises can be a wise move for drivers.

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Grinding brakes

The automotive retailer Pep Boys® notes that grinding noises indicate a serious problem with the braking system. According to, there are two major causes behind the grinding noise. If the grinding sound is audible when pressing on the brake pedal, this likely because the rotor disc is coming into contact with part of the caliper. This typically occurs because the pads or rotors are extremely worn down, causing the steel backing of the worn-out pad to grind against the rotor. In such instances, Pep Boys® recommends replacing the pads immediately.

If the grinding noise is audible while the vehicle is in motion, debris might be stuck inside the brakes. Drivers might be able to dislodge this debris by repeatedly moving their cars forward and backward in a safe place, such as a driveway. If that does not work, have the brakes serviced by a qualified mechanic.

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Many drivers are familiar with the high-pitched squealing sound that comes from their vehicles or those of fellow motorists. That squeal, while certainly not music to the ears, might be a good thing. That’s because Pep Boys® notes that some pads are equipped with small steel clips that serve as wear indicators. When pads have worn down, these devices produce a squealing sound to let drivers know it’s time to get new pads.

But squealing can be indicative of other things as well. Squealing noises are sometimes heard immediately after brake pads or rotors have been replaced. In such instances, the noise typically subsides within a day or two once the pads have been broken in.

Glazed pads also can create a squealing sound. When calipers stick, the brakes stay partially applied, producing excessive friction or heat. The heat causes the pads to glaze.

No one wants to hear noises coming from their brakes. However, such noises are often a car’s way of telling drivers that brakes need to be serviced..

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The Brake Report

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