why does my BMW 3 Series G20/G21 (2019-2024) shake when I accelerate?

Solution

1. Tire Inspection and Balancing

• Inspect Tires: Check all tires for uneven wear, bulges, or damage.
• Balance Tires: If any issues are found, have the tires balanced at a professional shop.

2. Wheel Alignment

• Check Alignment: If tires are worn unevenly, inspect the wheel alignment.
• Adjust Alignment: Use a wheel alignment machine to adjust the alignment to the manufacturer specifications.

3. Suspension Component Replacement

• Inspect Components: Look for worn or damaged suspension parts, including control arms and bushings.
• Replace Affected Parts: If any components are found defective, replace them with OEM or high-quality aftermarket parts.

4. Engine and Transmission Mount Inspection

• Visual Inspection: Examine engine and transmission mounts for cracks or excessive wear.
• Replace Mounts: If mounts are damaged, replace them with new mounts, ensuring they are torqued to the manufacturer's specifications.

Tools Required:

• Socket set
• Torque wrench
• Wheel alignment machine
• Tire balancer

Parts Required:

• Tires (if damaged)
• Suspension components (if worn)
• Engine and transmission mounts (if defective)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Always ensure the vehicle is securely lifted and supported before working underneath.
• Disconnect the battery if working on electrical components or mounts.