State of the Art: Tubeless
With tubeless systems, you mount the tyre directly on the rim. By omitting the inner tube, tubeless tyres roll faster and smoother. In addition, the system is fundamentally more puncture-proof – especially at low air pressures. Tubeless has become widely accepted on gravel and mountain bikes. On road bikes, the demands on tyres and rims are different due to the high air pressures, but more and more riders are switching over. How do tubeless tyres work? Tubeless-specific tyres and rims fit together so precisely that they form an airtight chamber, and an inner tube is no longer necessary. To seal the spoke holes in the rim so that they’re airtight, you first have to apply a special kind of rim tape. You then screw the tubeless valve directly into the valve hole of the rim. Many combinations of high-quality tyres and rims already hold in air, but the system is only really complete with tyre sealant. You insert this fluid into the tyre either before assembly or through the valve afterwards. It not only ensures that the tyre is permanently airtight on the rim – it also seals areas with minor damage. Mishaps caused by thorns, for example, are now a thing of the past. The sealant should be refreshed every few months as it dries out over time. How long you can ride on one filling depends on the manufacturer. Tyre punctures that the sealant does not close on its own can be repaired with special repair kits. For this purpose, the wheel can remain in the bike and the tyre on the rim. In case a puncture cannot be repaired, we recommend that you always keep a spare tube with you, such as a tiny TPU tube, even if you’re riding with tubeless tyres.