Changing brake discs is a crucial maintenance task that ensures your vehicle’s braking system operates safely and efficiently. In this guide, we’ll walk you through the steps to change brake discs, also known as rotors, providing you with practical information and tips to do it properly.

What Are the Steps to Change Brake Discs?

To change brake discs, you’ll need to gather the necessary tools, safely lift the vehicle, remove the wheel, and then proceed with removing and replacing the brake discs. Here’s a detailed step-by-step guide:

1. Gather Necessary Tools and Materials

   • Tools Needed: Jack and jack stands, lug wrench, socket set, screwdriver, C-clamp, and torque wrench.
   • Materials: New brake discs and brake pads, brake cleaner, and anti-seize lubricant.

2. Prepare Your Vehicle

   • Park on a Level Surface: Ensure the car is on a flat, stable surface.
   • Engage the Parking Brake: This prevents the vehicle from rolling.
   • Loosen Lug Nuts: Slightly loosen the lug nuts on the wheel where you’ll change the brake disc.

3. Lift the Vehicle

   • Use a Jack: Lift the car using a jack and secure it with jack stands for safety.
   • Remove the Wheel: Completely remove the lug nuts and take off the wheel to access the brake assembly.

4. Remove the Brake Caliper

   • Unscrew Caliper Bolts: Use a socket wrench to remove the bolts holding the caliper.
   • Support the Caliper: Use a bungee cord or wire to hang the caliper, ensuring it doesn’t hang by the brake hose.

5. Remove the Old Brake Disc

   • Remove Caliper Bracket: If necessary, remove the caliper bracket to access the disc.
   • Release the Disc: If the disc is stuck, gently tap it with a rubber mallet to loosen it.
   • Clean the Hub: Use brake cleaner to clean the hub surface where the new disc will sit.

6. Install the New Brake Disc

   • Position the New Disc: Place the new disc onto the hub.
   • Secure the Disc: Some discs have retaining screws; if so, secure them in place.

7. Reassemble the Brake Components

   • Reattach the Caliper Bracket: If removed, reinstall the bracket.
   • Compress the Caliper Piston: Use a C-clamp to compress the piston, allowing room for the new pads.
   • Install New Brake Pads: Place the new pads in the caliper bracket.
   • Reattach the Caliper: Secure it with the bolts and ensure everything is tight.

8. Reinstall the Wheel

   • Place the Wheel Back: Align the wheel and hand-tighten the lug nuts.
   • Lower the Vehicle: Carefully lower the car and then fully tighten the lug nuts with a torque wrench.

9. Test the Brakes

   • Pump the Brake Pedal: Before driving, pump the brake pedal to ensure the pads seat properly.
   • Test Drive: Take a short drive to ensure the brakes are functioning correctly.

Why Is It Important to Change Brake Discs?

Changing brake discs is essential for maintaining optimal braking performance and safety. Worn or damaged discs can lead to decreased braking efficiency, increased stopping distances, and potential brake failure. Regularly checking and replacing brake discs ensures your vehicle remains safe to drive and helps prevent more costly repairs in the future.

How Often Should You Change Brake Discs?

Brake discs typically need replacement every 30,000 to 70,000 miles, depending on driving habits, vehicle type, and road conditions. It’s essential to check your vehicle’s manual for specific recommendations and inspect the discs regularly for signs of wear, such as grooves, cracks, or excessive thinning.

What Are the Signs You Need to Change Brake Discs?

• Vibrations: Feeling vibrations in the steering wheel when braking.
• Squeaking or Grinding Noises: Unusual noises when applying brakes.
• Visible Damage: Deep grooves or cracks on the disc surface.
• Increased Stopping Distance: Noticeable decrease in braking performance.

People Also Ask

How Do I Know If My Brake Discs Are Bad?

Bad brake discs often show symptoms such as vibrations during braking, unusual noises like squealing or grinding, visible grooves or cracks, and a noticeable decrease in braking efficiency. Regular inspections can help identify these issues early.

Can I Change Brake Discs Myself?

Yes, you can change brake discs yourself if you have the necessary tools and mechanical knowledge. However, if you’re unsure or uncomfortable with the process, it’s best to seek professional assistance to ensure safety.

What Happens If You Don’t Change Brake Discs?

Failing to change brake discs when needed can lead to reduced braking performance, increased stopping distances, and potentially dangerous driving conditions. It can also cause further damage to other brake components, leading to more costly repairs.

How Much Does It Cost to Replace Brake Discs?

The cost of replacing brake discs varies depending on the vehicle make and model, the quality of the discs, and labor charges if done professionally. On average, replacement costs range from $150 to $300 per axle.

What’s the Difference Between Brake Pads and Brake Discs?

Brake pads are components that press against the brake discs to create friction and slow the vehicle. Brake discs, also known as rotors, are the surfaces that the pads press against. Both are critical for effective braking.

In conclusion, changing brake discs is a manageable task with the right tools and knowledge, but it requires attention to detail and safety precautions. Regular maintenance and timely replacement of brake components ensure your vehicle remains safe and reliable. If you’re interested in learning more about vehicle maintenance, consider exploring topics such as how to change brake pads or the importance of regular brake inspections.