why is my BMW X3 F25 (2011-2018) making a grinding noise while braking

Solution

1. Preparation

• Tools Required: Jack, jack stands, lug wrench, socket set, brake cleaner, safety glasses, gloves.
• Safely lift the vehicle and secure it on jack stands.
• Remove the wheel to access the braking components.

2. Inspect and Replace Brake Pads

• Sub-steps:
  1. Remove the caliper bolts using a socket set.
  2. Carefully slide the caliper off the rotor and support it without straining the brake line.
  3. Remove the old brake pads from the caliper bracket.
  4. Compare the thickness of the old pads with new ones to ensure replacement is necessary.
  5. Clean the caliper bracket and apply brake grease to the contact points of the new pads.
  6. Install the new brake pads in the bracket.

3. Inspect and Replace Brake Rotors (if necessary)

• Sub-steps:
  1. Check the rotor for grooves or scoring; if present, it may need replacement.
  2. Remove the rotor retaining screws (if equipped) and slide the rotor off the hub.
  3. Clean the hub surface to remove rust or debris.
  4. Install the new rotor, ensuring it sits flush against the hub.
  5. Torque the rotor retaining screws to the manufacturer’s specification.

4. Reassemble Braking Components

• Sub-steps:
  1. Reinstall the caliper over the new pads and rotor.
  2. Secure the caliper by tightening the caliper bolts to the specified torque.
  3. Replace the wheel and hand-tighten the lug nuts.
  4. Lower the vehicle and torque the lug nuts to the manufacturer’s specification.

5. Final Checks

• Pump the brake pedal a few times to seat the brake pads.
• Check brake fluid level and top off if necessary.