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my BMW 3 Series F30/F31 (2012-2019) shakes when braking, what could be the cause? - BMW 3 Series
Home/Cars/BMW/3 Series/F30/F31 (2012-2019)/my BMW 3 Series F30/F31 (2012-2019) shakes when braking, what could be the cause?

my BMW 3 Series F30/F31 (2012-2019) shakes when braking, what could be the cause?

BMW 3 Series F30/F31 (2012-2019)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
578 words

Problem Statement

The BMW 3 Series F30/F31 (2012-2019) exhibits shaking or vibration when braking, indicating potential issues with the braking system.

Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Always ensure the vehicle is securely supported on jack stands before working underneath it.
  • •Allow the brakes to cool before working on them to prevent burns.

Symptoms

  • •Steering wheel shakes during braking
  • •Brake pedal pulsates or feels uneven
  • •Vehicle pulls to one side when braking
  • •Increased stopping distance
  • •Unusual noises (e.g., grinding or squeaking) when brakes are applied

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Lug wrench
  • •Jack and jack stands
  • •Socket set
  • •Brake caliper tool
  • •Torque wrench
  • •Brake cleaner

Parts Required

  • •Brake pads
  • •Brake rotors (if needed)

Additional Information

Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
2 items

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Solution
1. Preparation
  • Gather necessary tools and parts.
  • Park the vehicle on a level surface and engage the parking brake.
  • Ensure the engine is off and the vehicle is cool.
2. Remove Wheel
  • Use a lug wrench to loosen wheel lug nuts slightly while the vehicle is still on the ground.
  • Raise the vehicle with a jack and secure it on jack stands.
  • Remove the lug nuts and take off the wheel.
3. Inspect Braking Components
  • Visually inspect the brake pads for wear; replace if less than 3mm thick.
  • Check the brake rotors for warping or grooves; replace if surface is uneven beyond specification (usually 0.5mm runout).
  • Inspect calipers for any signs of sticking or damage.
4. Replace Brake Pads and Rotors (if necessary)
  • Brake Pads:

    • Remove the caliper bolts with a socket set and slide the caliper off the rotor.
    • Remove old brake pads from the caliper bracket.
    • Install new brake pads, ensuring proper orientation.
    • Compress the caliper piston using a brake caliper tool to fit over new pads.
  • Brake Rotors:

    • Remove the rotor by unscrewing any retaining screws (if present) and sliding it off the hub.
    • Clean the hub surface with brake cleaner before installing the new rotor.
    • Install the new rotor and secure it with retaining screws if applicable.
5. Reassemble and Torque
  • Reattach the caliper over the new pads and tighten the caliper bolts to manufacturer specifications (typically around 25-30 Nm).
  • Re-install the wheel and hand-tighten the lug nuts.
  • Lower the vehicle and torque the lug nuts to the specified value (usually 110-120 Nm).
6. Final Checks
  • Pump the brake pedal a few times to ensure proper brake engagement.
  • Inspect brake fluid level and top off if necessary.