why is my Volkswagen Passat B8 (2015-2022) shaking at high speeds?

Solution

1. Preparation

• Gather tools and necessary replacement parts.
• Park the vehicle on a flat surface and engage the parking brake.

2. Tire Inspection and Balancing

1. Check Tire Pressure: Use a tire pressure gauge to ensure all tires are inflated to the manufacturer's recommended pressure.
2. Inspect Tires: Look for any signs of bulges, cuts, or abnormal wear.
3. Balance Tires:
   • Remove the wheels using a socket set.
   • Place each wheel on a balancing machine and adjust weights as needed to achieve balance.
   • Reinstall the wheels and torque to the manufacturer’s specifications (usually around 80-100 ft-lbs depending on the model).

3. Suspension Check and Repair

1. Visual Inspection: Inspect all visible suspension components for signs of wear or damage, focusing on control arms, struts, and bushings.
2. Replace Worn Parts:
   • If any components are worn, replace them with OEM parts.
   • Use a torque wrench to tighten components to manufacturer specifications.
3. Test Drive: After repairs, take the vehicle for a test drive to ensure the shaking has been resolved.

4. Wheel Alignment

1. Check Alignment: Use an alignment machine to check the toe, camber, and caster angles.
2. Adjust Alignment:
   • Make necessary adjustments to bring the alignment within manufacturer specifications.
   • Recheck alignment after adjustments.