why does my Porsche 911 992 (2019-Present) make a grinding noise when braking?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Use wheel chocks for added safety.

2. Raise Vehicle and Remove Wheels

• Sub-steps:
  • Loosen lug nuts slightly while the vehicle is on the ground.
  • Raise the vehicle using a jack and securely place jack stands underneath.
  • Completely remove the lug nuts and take off the wheels.

3. Inspect and Replace Brake Pads

• Sub-steps:
  • Remove the caliper by loosening the caliper bolts (typically 13mm or 15mm).
  • Carefully slide the caliper off the rotor and suspend it using a bungee cord to avoid stress on the brake line.
  • Remove the old brake pads from the caliper bracket.
  • Inspect the caliper bracket for any debris or rust; clean if necessary.
  • Insert new brake pads into the bracket, ensuring they are seated properly.

4. Inspect and Replace Brake Rotors (if needed)

• Sub-steps:
  • Check the rotors for any visible damage, scoring, or excessive wear.
  • If replacement is necessary, remove the rotor by unscrewing the retaining screws (if equipped) and sliding the rotor off the hub.
  • Install new rotors by aligning them with the hub and securing with screws.

5. Reassemble Braking System

• Sub-steps:
  • Reattach the caliper over the new brake pads and rotor.
  • Tighten caliper bolts to the manufacturer’s specified torque (typically around 25-35 Nm).
  • Reinstall the wheels and hand-tighten the lug nuts.
  • Lower the vehicle back to the ground and torque the lug nuts to the manufacturer’s specifications (usually around 100-120 Nm).

6. Final Checks

• Sub-steps:
  • Pump the brake pedal several times to seat the pads against the rotor.
  • Check brake fluid level and top up if necessary.
  • Conduct a final inspection to ensure everything is secured and no tools are left in the engine bay.