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Up to 25% Off Online Orders of Select Parts & Accessories. Enter Promo Code MMJ25 in Cart.

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Receive Up To 25% Off Your Online Purchase Of Select Parts and Accessories Instantly

When items are added to the cart, the discount will automatically deduct off the price of the qualifying items. Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installation, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes select products, items already on sale and MAP priced brands & items. For full category inclusions and disclaimers, See Details Here. Valid online until 11:59 PM EST on 7/31/18.

Additional Promotions Not Included in the above:

Receive 20% Off Select Wagner branded brake parts with your online purchase.

Receive 10% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP10.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.



Depending on the type of car or truck you own, your front brakes may be very different from your rear brakes. There are two basic types of automotive braking systems: disc brakes and drum brakes. About the only feature they have in common is they both use friction to stop your vehicle. Let’s talk about some of the potential differences between your front and rear brakes.

Disc Brakes

Compared to drum brakes, disc brakes tend to be lighter and easier to service. That’s why the front brakes on your car or truck are likely to be disc brakes. While disc brakes are fundamentally more complicated than drum brakes, but these added complications come with a host of advantages.

There are three essential parts necessary for a disc brake to work:

The rotor is the “disc” portion of the brake, which is connected to the wheel and/or axel. When the vehicle is in motion, the rotor spins in place. The rotor must be perfectly smooth on both sides. It requires a minimum thickness to work properly. Most rotors can be machined down to the minimum thickness even after they have been used for tens of thousands of miles.

The caliper holds the brake pads in place and acts as the key mechanism between the rotor and brake pad. The caliper’s pistons must move inside their bores. The caliper transfers the force from your brake pedal to the brake rotor. Since the caliper holds your brake pads, it’s important for it to work as it should.

Brake Pads
The brake pads are built with one main purpose in mind: to press against the rotor when you depress the brake pedal. When in doubt, replace them. Most brake pads have wear indicators built into them. These indicators consist of small divots in the pad material that when worn completely away indicate the brake pads are on their last legs.

How They Work:

Disc Brakes
When you press on your brake pedal, pressure builds up in your brake lines. The pressure then acts on the cylinder inside the brake caliper. The pressure in the cylinder pushes on the caliper’s piston. The piston then acts on the brake pad, which makes contact with the rotor. The friction between your brake pads and the brake rotor is what ultimately causes your car to decelerate under braking.

Drum Brakes
Drum brakes are a little different from disc brakes. Depending on the age and type of vehicle you own, you may have a pair of drum brakes rather than disc brakes acting on the rear axle of your machine.

Rather than a rotor, drum brakes use a cylinder to stop your vehicle. The pads act on this cylinder, thus creating the friction necessary to stop your vehicle. As with disc brakes, drums have a minimum thickness specification. Drum brakes can often be machined to like-new condition, allowing you to avoid replacing them when they wear out. In general, drum brakes tend to last longer than disc brakes. This has more to do with the fact that they are often found on the rear of most vehicles that have them, rather than any sort of increased durability.

The Front Brakes Do the Hard Work
Up to 90% of your stopping power is contained within the front brakes. Even if your car or truck did not have any brakes on the rear, you would still be able to stop your vehicle effectively. Alternatively, if you chose to use just your rear brakes, you would find your vehicle stops much, much slower. You can test this out by attempting to stop your vehicle using just the emergency brake. Your vehicle will not stop nearly as quickly using the emergency brake as it will if you simply stomp down on the pedal on the floor.

Because so much force is applied to the front brakes when stopping, they tend to wear out much faster than the rear brakes. This is true whether you have disc or drum brakes on the rear of your vehicle.

Servicing Your Brakes

Regardless of whether you need rotors, drums, or brake pads we’ve got everything you need to service your brakes yourself. Or if you’d prefer to let the pros handle your brake service, Pep Boys has you covered.