Tyre inner tubes, the construction and general construction of tubeless tyres as tubeless tyres but the "tube" and the solution for one tyre, and tyre inner tubes inner tubes are independent, because the tyre inner tubes to play the "fetal brain trust" role Therefore, the combination of tyre and rim is not very close, once the tube was punctured sharp hard objects, the air will ring from the fetal mouth and the mouth of the binding site of a sudden loss of speed may slow roller off the tyre sidewall cord, scrap the whole tyre, speed fast, they often cause, such as roll-over, "speak unwarrantedly" and other serious accident.