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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs, A/C Parts, Belts, Water Pumps, Drums & Rotors, Pads & Shoes, Calipers, Brake Hydraulics. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Wagner and BBK Performance. Valid online until 2:59 am EST on 4/30/17.

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What is a Bad Brake Noise?


What was That?!

Chances are you’ve heard a squealing noise while braking at some point in time. More often than not, this bad brake noise is a sign of trouble. However, brake noise comes in different varieties so it is difficult to tell exactly what each noise means. Brake noise can serve as an indicator that you have a little time left before it’s time for a brake replacement service. It can also mean your brakes have worn down completely and you’re ruining your brake rotors and other brake components. The two most common types of bad brake noise are squealing and grinding.

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What is a Bad Brake Noise?

Click to Hear a Typical
Brake Squealing Sound


Squealing or squeaking noises usually indicate that your brake pads require replacement. Some brake pads are equipped with wear indicators in the form of small steel clips which make a squealing sound when the pad has worn down. While squealing can indicate that you need new brake pads, it can have other implications and meanings. Squealing can sometimes be heard after getting a brake pad or rotor replacement service. This should go away in a day or two once the pads break in but if the sound continues, we recommend making an appointment at your local store for a brake system evaluation.

Glazing on the brake pads can also cause them to squeal. Glazing occurs when brake calipers stick, causing the brakes to stay partially applied, which results in excessive friction and heat. This heat causes the pad(s) to harden and crystallize, or glaze. Squealing can also be attributed to broken anti-rattle clips (clips that hold the brake pads in place) and/or worn-out brake pad insulation. In any case, it is recommended to have your brakes evaluated as soon as possible if you hear this noise.

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Click to Hear a Typical
Brake Grinding Sound


Grinding noises are an indication that something serious is wrong with your brake system. Sometimes, the noise could indicate that a small rock or a bit of debris has gotten inside the brakes, and the obstruction simply needs to be removed. Other times, however, a grinding noise can be heard when your brake pads have worn out completely, causing the steel backing of the worn-out pad to grind against the brake rotor. In this case, not getting the brake pads replaced immediately could do serious damage to the brake rotors, resulting in expensive repair costs. So if you do hear a grinding noise, get your car off the road and looked at by a professional immediately. Not doing so potentially puts you and your passengers in an unsafe situation. If you are in this situation and are concerned, Pep Boys offers a brake system evaluation as well as comprehensive brake replacement service packages.

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