Rear brake pads wear out faster than you might expect, and replacing them yourself can save you $100 to $300 in labor costs

Replacing rear brake pads is a job most car owners can do in an hour or two with basic tools — a jack, jack stands, a wrench set, and a brake pad spreader or old screwdriver. The pads themselves cost $30 to $100 per axle depending on your vehicle and the brand you choose. The real barrier is not difficulty but confidence: you need to know what you are actually looking at when you get under the car, and what order the steps go in.

The process is nearly identical whether your rear brakes are disc (a rotor and caliper, like the front) or drum (a wheel cylinder and shoes inside a drum). Disc brakes are more common on newer cars and are simpler to work on. Drum brakes require a bit more patience but follow the same logic. Either way, you will remove the wheel, take off the old pads or shoes, install new ones, and pump the brake pedal to reset the system.

Key Takeaways

  • Rear disc brake pads take about one hour to replace per axle and require only a jack, jack stands, a wrench, and a brake pad spreader or flathead screwdriver.
  • You must support the car on jack stands before working underneath it — a jack alone can slip and cause serious injury.
  • After installing new pads, pump the brake pedal several times before driving to restore pressure in the brake line.
  • Drum brakes follow the same principle but require you to remove the drum first and pay attention to the order springs and clips come off so you can reassemble them correctly.
  • If the rotor or drum is visibly scored, cracked, or thinner than the minimum thickness stamped on it, replace it at the same time to avoid brake noise and poor stopping power.

What you need before you start

Gather your tools and materials in one place before you lift the car. You will need a floor jack and at least two jack stands rated for your vehicle's weight (check your owner's manual or the door jamb sticker). You will also need a wrench or socket set that fits your wheel lug nuts, a wrench or socket for the caliper bolts (usually 10mm, 12mm, or 14mm), and a way to spread the caliper piston back into its bore — a brake pad spreader tool costs $10 to $20, but an old flathead screwdriver works in a pinch.

Buy new brake pads before you start. Write down your vehicle's year, make, model, and engine size, and take that information to an auto parts store. They will hand you the right pads for your car. If you are unsure whether your rear brakes are disc or drum, ask the parts counter — they can tell you from your vehicle information. You may also want to buy a small can of brake cleaner ($5 to $8) to remove dust and old brake fluid from the rotor or drum.

Lifting the car safely

Park on a flat, level surface away from traffic. Engage the parking brake and turn off the engine. Loosen the lug nuts on the rear wheel you are working on while the wheel is still on the ground — this is much easier than trying to loosen them after the wheel is in the air. Loosen them only a quarter turn; you will remove them fully after the car is lifted.

Position the floor jack under the frame or axle near the wheel you are removing. Consult your owner's manual for the exact jacking point — it is usually a reinforced spot on the frame just behind the rear wheel. Raise the car until the wheel is about six inches off the ground. Slide a jack stand under the frame on each side of the axle and lower the car onto the stands. The car should rest solidly on the stands with the jack still in place but not supporting any weight. Never work under a car supported only by a jack.

Removing the wheel and caliper

Now remove the lug nuts completely and pull the wheel straight toward you. Set it aside on a flat surface so it does not roll. You are now looking at the brake assembly — either a rotor with a caliper bolted to it, or a drum.

For disc brakes, locate the caliper bolts on the back of the caliper (the part that looks like a clamp around the rotor). These are usually two bolts, one at the top and one at the bottom. Use your wrench or socket to remove them. The caliper will swing out of the way. Do not let it hang by the brake hose — support it with a wire or bungee cord attached to the suspension so the hose does not stretch or tear.

For drum brakes, you will see a drum (a hollow cylinder) bolted to the wheel hub. Remove the bolts holding the drum and pull it straight off. If it is stuck, tap around the edge gently with a hammer to break it loose, or back off the brake adjuster screw inside the drum (visible through a hole in the backing plate) to give the shoes more room.

Replacing disc brake pads

With the caliper out of the way, you can see the old pads — they are flat metal plates with friction material bonded to them, sitting on either side of the rotor. Slide them out of the caliper bracket. They may be held in by a clip or pin; remove those as well.

Use your brake pad spreader or screwdriver to push the caliper piston all the way back into its bore. This makes room for the thicker new pads. You will feel resistance; keep steady pressure until the piston bottoms out. Wipe away any old brake dust with a clean rag.

Slide the new pads into the bracket in the same orientation as the old ones — the friction material faces the rotor. If your pads came with a shim (a thin metal backing), make sure it is attached to the back of each pad. Reinstall any clips or pins that held the old pads. Swing the caliper back into place and reinstall the bolts, tightening them firmly but not with all your strength — usually 20 to 30 foot-pounds of torque.

Replacing drum brake shoes

With the drum off, you are looking at the brake backing plate and the two curved brake shoes inside. This is where the order of disassembly matters: take a photo with your phone before you remove anything so you can see where the springs and clips go.

Drum brakes have a return spring at the top connecting the two shoes, and usually a smaller spring or clip holding each shoe against the backing plate. Remove these springs and clips carefully — they are under tension and can fly across the garage. Slide the shoes out of the wheel cylinder (the small hydraulic piston at the top of the backing plate).

Transfer any springs and clips from the old shoes to the new ones, or buy a complete hardware kit with new springs if the old ones look rusty or weak. Slide the new shoes into place, making sure the wheel cylinder pushes against them. Reinstall the springs and clips in the same positions you photographed. This step is fiddly but not difficult if you take your time and refer to your photo.

Reassembling and testing

Reinstall the wheel and hand-tighten the lug nuts. Raise the car slightly with the jack to lift it off the jack stands, then remove the stands and lower the car fully to the ground. Tighten the lug nuts in a star pattern (top, bottom, right, left, then back to top) so the wheel sits evenly. Tighten them firmly — usually 80 to 100 foot-pounds, but check your owner's manual for your vehicle.

Before you drive, pump the brake pedal several times while the engine is off. You will feel the pedal get firmer as pressure builds in the brake lines. This is essential — without it, your brakes may feel spongy or unresponsive. Start the engine and test the brakes gently in a parking lot or quiet street before driving normally. New pads often feel slightly different for the first 100 miles as they bed in to the rotor or drum.

When to replace the rotor or drum at the same time

While you have the wheel off, inspect the rotor or drum. A rotor should be smooth and shiny; a drum should be smooth inside. If either one is visibly scored (scratched), cracked, or has a lip or ridge around the edge, it should be replaced. Rotors and drums also have a minimum thickness stamped on them — if the part is thinner than that number, it must be replaced.

Replacing a rotor or drum adds $50 to $150 to the job and takes an extra 20 minutes, but it prevents brake noise, vibration, and poor stopping power down the road. If you are unsure whether yours needs replacement, take a photo and show it to the parts counter or a mechanic — they can tell you in seconds.

Frequently Asked Questions

Do I need to bleed the brakes after replacing the pads?

No. Bleeding is only necessary if you opened a brake line or the system lost pressure. Replacing pads does not require bleeding. Pumping the pedal several times restores pressure and is all you need to do.

What if the brake pedal stays soft even after pumping it?

Check that you pumped it at least 10 times with the engine off. If it is still soft, check that the caliper piston is fully seated and that no air got into the line during removal. If the problem persists, you may have a leak or air in the system, which requires bleeding — a job best left to a mechanic or someone with bleeding experience.

Can I replace just one rear wheel's pads, or do I have to do both?

You should replace pads on both wheels of the same axle at the same time. If you replace only one side, the other side will wear faster and your braking will feel uneven. It takes only an extra hour to do both, and the cost of pads is small compared to the safety benefit.

How often do rear brake pads need replacing?

This varies widely depending on your driving habits and vehicle weight. Rear pads often last 50,000 to 70,000 miles, but some cars go 100,000 miles or more. Check your pads every 20,000 miles or whenever you rotate your tires — if they are less than a quarter inch thick, plan to replace them soon.

What is that clicking sound I hear after I replace the pads?

New pads sometimes make a light clicking or creaking sound for the first few hundred miles as they bed in. This is normal and usually goes away. If the sound is loud, grinding, or does not go away after 500 miles, have the brakes inspected — you may have installed them incorrectly or the rotor may be damaged.