my BMW X5 shakes when I brake hard what’s the issue

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to ensure safety while working on the brake system.

2. Remove Wheel

• Use a jack to lift the front or rear of the vehicle (as applicable).
• Secure with jack stands.
• Remove the lug nuts using a socket set and take off the wheel.

3. Inspect and Replace Brake Components

• Inspect Brake Rotors:

  • Check for warping using a dial indicator.
  • If warped, proceed to remove the rotors by unscrewing the retaining screws.
  • Replace with new rotors if necessary.

• Inspect Brake Pads:

  • Check the thickness of the brake pads.
  • If they are worn unevenly or below the manufacturer’s specifications, remove the caliper bolts and slide the caliper off the rotor.
  • Replace pads with new, ensuring they are installed evenly.

4. Reassemble Components

• Reinstall the brake caliper and torque the bolts to the manufacturer's specifications.
• Place the new rotor onto the hub, securing with retaining screws if applicable.
• Reinstall the wheel and hand-tighten lug nuts.

5. Final Checks

• Lower the vehicle and torque the lug nuts to the specified value.
• Reconnect the battery.
• Perform a brake system bleed if brake fluid was lost during the process.