Home ENGINEERING Physics Behind Tubeless Tires 3D Animation

Physics Behind Tubeless Tires 3D Animation


Tubeless tires are pneumatic tires that do not require a separate inner tube.Unlike pneumatic tires which use a separate inner tube, tubeless tires have continuous ribs molded integrally into the bead of the tire so that they are forced by the pressure of the air inside the tire to seal with the flanges of the metal rim of the wheel.

source/image(PrtSc): Lesics

In a tubeless tyre, the tyre and the rim of the wheel form an airtight seal, with the valve being directly mounted on the rim. If a tubeless tyre gets a small puncture, air escapes only through the hole, leading to a gentle deflation. Tubeless tires have a wonderful physics behind them. Let’s get into the engineering and physics of them in this video from Lesics:

Conversely, a tubed tire, with an inner tube, could burst like a balloon, leading to deflation of the tire which could result in sudden loss of control of the vehicle.


However, the “bursting like a balloon” scenario is highly unlikely due to fact that the inner tube is inside of the tire and will deflate at a rate proportional to the puncture hole size. In antique automobiles, made before the mid 1950s, the rims are not designed for tubeless tyres, and an inner tube is required to prevent slow leaks at the bead./wikipedia