1. (Units) a unit of heat in the fps system equal to the quantity of heat required to raise the temperature of 1 pound of water by 1Â°F. 1 British thermal unit is equivalent to 1055.06 joules or 251.997 calories.
Quick Answer. A major factor that usually causes tire noise is the air chamber inside the tire. The large void that is filled with air acts as a giant resonance chamber. Thus, the tires are something like donut-shaped drums that generate a low-frequency hum when tires are rolling.
The car is making a roaring sound while driving and when you turn the wheel to the right, the sound gets loader. There also a bit of a vibration in the gas pedal. We changed the driver side wheel bearing and there is no change. We also over inflated the tires to see if the noise was the tires and there was no change.