why does my Toyota Corolla E170 (2013-2019) feel unstable at high speeds?

Solution

1. Preparation

• Ensure the vehicle is parked on a flat, level surface.
• Gather necessary tools and safety equipment.
• Wear safety glasses and gloves for protection.

2. Tire Inspection

• Sub-steps:
  1. Check tire pressure using a tire gauge; inflate to manufacturer specifications if necessary.
  2. Inspect tire tread depth using a tread depth gauge; replace tires if tread is below 2/32".
  3. Look for any bulges, cuts, or foreign objects embedded in the tires.

3. Suspension and Steering Check

• Sub-steps:
  1. Visually inspect all suspension components (e.g., struts, shocks, control arms) for signs of wear or damage.
  2. Check for any loose bolts or bushings that could affect stability.
  3. Examine the steering linkage for any signs of play or damage.

4. Wheel Alignment

• Sub-steps:
  1. Take the vehicle to a professional alignment shop.
  2. Follow the technician's recommendations to adjust the alignment angles (caster, camber, toe) to manufacturer specifications.

5. Wheel Balancing

• Sub-steps:
  1. Remove the wheels from the vehicle.
  2. Use a wheel balancer to check for any imbalances.
  3. Install wheel weights as necessary to achieve proper balance.
  4. Reinstall the wheels and torque to the manufacturer’s specification (usually around 76-80 ft-lbs).