In this guide, we’ll break down the basics of brake pads—how they work, when to replace them, and how to perform a DIY brake pad replacement step-by-step.
What Do Brake Pads Do?
Brake pads are the friction material that presses against your vehicle’s rotors (the disc part of the braking system) to slow your wheels when you apply the brakes. They work as part of a hydraulic braking system, absorbing kinetic energy and converting it into heat.
Over time, that friction causes brake pads to wear down. If they get too thin, they won’t stop your car as effectively—and worn pads can even damage your rotors, leading to a more expensive repair.
Signs Your Brake Pads Need to Be Replaced
Knowing when to replace your brake pads can save you money and keep you safe. Look for these common signs:
- Squealing or screeching sound: Most brake pads come with wear indicators that make a high-pitched sound when the pad material is low.
- Grinding noise: If you hear grinding, your pads may be worn down to the metal—damaging your rotors.
- Longer stopping distances: Worn brake pads reduce stopping power.
- Brake warning light: Some vehicles have sensors that trigger a dashboard warning when it’s time for service.
- Visual inspection: You can sometimes see the pad material through the wheel. If it’s less than 1/4 inch thick, it’s time to replace them.
What You’ll Need
To replace brake pads at home, gather the following tools and supplies:
- New brake pads (check with Miller Auto to match your make/model)
- Jack and jack stands
- Lug wrench
- Socket wrench set
- C-clamp or brake caliper tool
- Brake cleaner
- Anti-squeal compound (optional)
- Shop rags or gloves
Step-by-Step Guide to Replacing Brake Pads
1. Park safely and lift the vehicle:
Park on a level surface, engage the parking brake, and use a jack to lift the car. Secure with jack stands.
2. Remove the wheels:
Use a lug wrench to remove the lug nuts and take off the wheel to access the brake caliper.
3. Remove the brake caliper:
Unscrew the caliper bolts and carefully slide the caliper off the rotor. Hang it with a bungee cord—don’t let it dangle by the brake line.
4. Remove the old pads:
Slide out the worn brake pads. Take note of how they’re positioned so you can install the new ones correctly.
5. Compress the caliper piston:
Use a C-clamp or brake tool to gently push the piston back into the caliper. This creates space for the new, thicker pads.
6. Install the new brake pads:
Slide the new pads into place. If your pads include anti-squeal shims or clips, make sure they’re properly positioned.
7. Reinstall the caliper:
Slide the caliper back over the new pads and secure it with the caliper bolts.
8. Reinstall the wheel and repeat:
Put the wheel back on, tighten the lug nuts, and repeat the process on the other side.
9. Lower the vehicle and pump the brakes:
After finishing all wheels, lower the car and pump the brake pedal several times to seat the pads.
Pro Tips from the Garage
- Always replace brake pads in pairs (both front or both rear).
- Check your rotors—if they’re grooved or warped, consider replacing or resurfacing them.
- Use brake cleaner to remove dust and debris before reassembly.
- Don’t skip the test drive! Drive cautiously and test the brakes in a safe area.
At Miller Auto Parts and Paint, we carry top-quality brake pads for all makes and models, along with everything else you need to get the job done safely and efficiently. Not sure what you need? Just ask one of our expert staff, we’re here to help you stop with confidence.
