why does my BMW X5 G05 make a grinding noise when braking

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery to prevent any electrical issues.

2. Remove Wheel

• Use a jack to lift the vehicle and secure it with jack stands.
• Remove the lug nuts using a socket wrench and take off the wheel.

3. Inspect Brake Components

• Inspect the brake pads for uneven wear; replace if they are below the minimum thickness (usually 3mm).
• Check the rotors for any grooves or excessive wear; machine or replace if necessary.

4. Replace Brake Pads

• If pads are worn, remove the caliper bolts using a socket set.
• Slide the caliper off the rotor and support it with a bungee cord (do not let it hang by the brake line).
• Remove the old brake pads and install new ones, ensuring the anti-squeal shims are correctly positioned.

5. Reassemble

• Reattach the caliper, ensuring it is securely fastened to the rotor.
• Reinstall the wheel and torque the lug nuts to the manufacturer’s specifications (typically around 80 ft-lbs for BMW).
• Lower the vehicle back to the ground.

6. Final Check

• Reconnect the battery.
• Pump the brake pedal several times to seat the pads correctly.