How to Replace Brake Discs?

[EvangelineMarie]

The brake discs need to be replaced when the indicator light comes on; normally, the indicator light is off. Remove the two front wheel tires, and the round disc you see is the car's brake disc. The brake disc is mounted on the front wheel bearing. Remove the two 18mm screws on the brake caliper and take off the caliper. Align the holes on the brake disc with the bearing, then tap the inside of the brake disc to ensure it is fully secured on the bearing. Reinstall it in its original position, tighten the two fixing screws, and rotate the bearing to check for any abnormal noises.

[VanJayden]

I just replaced my car's brake rotors, and it's a step-by-step process. First, you need to jack up the car and remove the wheels to access the brake caliper. After loosening the caliper bolts with a wrench, carefully hang it up to avoid damaging the brake line. Then comes removing the old rotor—sometimes it's rusted in place and needs a few taps with a rubber mallet. Before installing the new rotor, make sure to clean the mounting surface thoroughly, or the rotor will wobble. When reassembling, pay attention to torque specifications, especially for the caliper bracket bolts—use a torque wrench. Finally, don't forget to pump the brakes a few times to reset the caliper pistons, and test the brakes at low speed before hitting the road. The key to the whole process is patience, as every bolt's tightness matters.

[VanLillian]

Changing brake rotors is actually quite a test of patience. You'll need to prepare tools like a jack and torque wrench, and remove the wheels first before you can proceed. The toughest part I've encountered are those rusted-seized bolts – even after spraying rust penetrant, you still have to wait half an hour before they'll budge. Before installing new rotors, remember to check if the bearing flange has any raised deformations, otherwise the brakes will shudder. The caliper pistons need to be pushed back using special tools – forcing them with pry bars can easily damage the seals. Most importantly, perform a test after installation: the steering wheel shouldn't vibrate during low-speed hard braking, otherwise you'll need to recheck the mounting surfaces. If doing it yourself, set aside at least half a day for the job.

[NevaehFitz]

Before replacing the rotors, prepare new discs, brake cleaner, and anti-seize compound. The sequence is crucial: first remove the wheel, then loosen the caliper, and use wire to hang the caliper to avoid stressing the brake hose. Rust removal is key! The hub contact surface must be thoroughly cleaned with a wire brush, otherwise the new rotor will cause brake shudder. Avoid touching the friction surface with bare hands during installation, as grease can lead to noise. Finally, tighten the caliper bolts to the torque specified in the manual—values vary significantly across models. Remember to pump the brakes several times to reset the caliper pistons, and perform 3-5 low-speed test stops before driving to ensure no abnormal noises.