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.
rotor cause vibration without braking? So have a vibration coming from the front of my car. My car vibrates and steering wheel shakes while braking. Either my rotors are end of life or I need to re-bed them. I get that part, as I read a great article posted here titled are my rotors warped?.