No giant sucking sound, just the gentle hissing of an innertube losing air, threatening a flat tire that could send the American dream machine off the road.
On the tire with an innertube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim.
有内胎式轮胎气门是直接做在内胎上的,无内胎式轮胎的气门安装在轮毂上。
3
Pneumatic tires are of two types, those using an innertube and the tubeless type. The amount of air pressure used depends on the type of tire and operation.