Method and device for locking tyres

Method for locking a tyre (10) to a wheel rim (12), comprising the steps of:

• mounting a tubular tyre locking means (14) on the wheel rim, which tubular tyre locking means (14) is arranged with a valve (26), which valve (26) is pushed through a hole in the rim (12),
• mounting a tyre (10) on the rim (12) such that the tyre (10) encloses the tyre locking means (14) and a pressure chamber (34) is obtained between the tyre locking means and the tyre,
• pressurizing said tyre locking means (14) via said valve (26) such that it expands, whereby the beads of the tyre (10) are pressed against the flanges of the wheel rim (12), characterised in the further steps of:
• inserting a hollow needle (30) through the tyre (10) and into said pressure chamber (34), which hollow needle (30) is connected to a pressurized air source,
• pressurising said pressure chamber (34) to desired pressure,
• removing said hollow needle (30), and
• sealing the hole caused by said needle.