my BMW 3 Series F30/F31 (2012-2019) has a grinding noise while driving

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery if working on electrical components.

2. Brake Inspection and Replacement (if applicable)

• Tools Required: Jack and jack stands, socket set, torque wrench, brake cleaner
• Remove the wheel:
  1. Loosen lug nuts with a socket set.
  2. Raise the vehicle with a jack and secure it with jack stands.
  3. Remove lug nuts and take off the wheel.
• Inspect brake pads and rotors:
  1. Check pad thickness; replace if below manufacturer's specifications (usually 3mm).
  2. Inspect rotors for scoring or warping; replace if necessary.
• Install new brake pads and rotors:
  1. Clean the rotor with brake cleaner.
  2. Install new rotors and pads, ensuring correct orientation.
  3. Torque lug nuts to manufacturer specifications (usually around 80 lb-ft).
• Reinstall the wheel and lower the vehicle.

3. Wheel Bearing Inspection and Replacement (if applicable)

• Tools Required: Torque wrench, bearing puller, socket set
• Lift the vehicle and remove the wheel as described in Step 2.
• Check for wheel bearing play:
  1. Grasp the wheel at the 12 and 6 o’clock positions and shake; excessive movement indicates a bad bearing.
• Replace the wheel bearing if necessary:
  1. Remove the brake caliper and rotor.
  2. Use a bearing puller to remove the old bearing.
  3. Install the new bearing, ensuring it is seated properly.
  4. Reassemble components in reverse order, torquing to specifications.

4. Driveshaft or CV Joint Inspection (if applicable)

• Tools Required: Socket set, pry bar
• Inspect the driveshaft:
  1. Check for any visible damage or excessive play in the CV joints.
  2. If damaged, remove the driveshaft by loosening the bolts and sliding it out.
• Replace the CV joint or driveshaft if necessary:
  1. Install the new part, ensuring proper alignment.
  2. Torque bolts to manufacturer specifications.