A British thermal unit (Btu) is a standard unit of energy that is used in the United States and sometimes in the U.K.
There is another defect in tires that can cause a vibration called loaded road force variance. The tires and pass a visual inspection, a radial and lateral runout test, be perfectly balanced, but still cause a vibration. This is due to the internal defects in the tire.
Shake, Lateral â A side-to-side vibration of the body, seats, and steering wheel. Shake, Vertical â An up and down vibration of the body, seats, and steering wheel. Shimmy, High-Speed â A vibration that causes the steering wheel to oscillate when driving on smooth roads at high speeds.tatic balancing removes only the lateral (side to side, wobble) imbalance and the tire and wheel assembly could possibly have a radial (up and down) vibration. Torque Sensitive Vibration or Noise â A vibration or noise that is sensitive to different loads and torque, applied to the drive train of a vehicle.