What advantage do tubeless tyres have over conventional tyres?

The tubeless tyres are far from being a new idea. Sev-eral types of such tyres were tried out on military vehicles during the Second World War, but they did not go into commercial production until 1955. Early efforts to produce a tubeless tyre failed mainly because natural rubber is porous. Butyl rubber, which came along during the war, solved this. It is a vastly better air container than natural rub-ber. A special lining on the inside edges fits snugly against the wheel-rim, making an airtight seal. The valve, which is supplied separately, slips through the hole in the rim and is sealed with special rubber washers. Tubeless Ares have several advantages that led to their widespread usage. In the conventional tyre, tube is under tension. Put a nail through it and it leaks like a child's bar-loon. The inside of the tubeless tyre is under compresston It tend to seize and hold a nail, and to hold air until the nail is with-drawn so that you can chcose your time to let the tyre go flat. Furthermore, the tube-less tyre generates less heat than a conventional.