Tesla Model X Shudder Due to Wheel Imbalance

To diagnose this cause, inspect the wheels and tires for balance issues. A wheel imbalance typically manifests as a vibration that occurs at consistent vehicle speeds (e.g., 55-70 mph) regardless of whether the driver is accelerating, coasting, or braking. Use a road-force balancer to verify if the mass distribution of the wheel-tire assembly is within factory specifications.

Sources