why does my BMW 3 Series E90/E91 (2005-2012) shake when I brake?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Use wheel chocks for added safety.

2. Remove Wheels

• Tools Required: Jack, jack stands, lug nut wrench.
• Loosen the lug nuts slightly while the vehicle is still on the ground.
• Raise the vehicle with a jack and secure it with jack stands.
• Remove the lug nuts completely and take off the wheels.

3. Inspect and Replace Brake Components

A. Brake Rotors

• Tools Required: Torque wrench, brake cleaner.
• Check the rotors for warping using a dial indicator.
• If warped, remove the brake caliper and the rotor.
• Replace with new rotors, ensuring proper fitment.
• Torque the rotor bolts to manufacturer specifications.

B. Brake Pads

• Inspect brake pads for uneven wear or damage.
• If necessary, remove the old brake pads from the caliper bracket.
• Install new brake pads and ensure they are properly seated.

4. Check Suspension Components

• Inspect control arms and bushings for wear or damage.
• Replace any worn or damaged components to restore proper alignment.

5. Reassemble and Install Wheels

• Reattach the wheels and hand-tighten the lug nuts.
• Lower the vehicle from the jack stands.
• Once on the ground, torque the lug nuts to manufacturer specifications.