Abstract: A runflat device, and a method of fitting a runflat device. The runflat device can include a chain of segments which is flexible enough to be manipulated for fitting, while also being laterally stable to ensure correct positioning and to avoid misalignment when tightening onto a wheel. The fitting method initially expands the runflat device within the cavity of the tire, retaining the runflat device securely in place against the inside of the tire's tread area. This advantageously leaves the beads of the tire unobstructed for fitting to a wheel.

Abstract: A runflat device can include a double sided beadlock. The runflat device can be fitted to any size and type of wheel, regardless of a shape and depth of a wheel well. The runflat device can be fitted using standard tools, and may be tightened by manipulation of a valve assembly.

Abstract: The present invention relates to a runflat device (2), particularly, but not exclusively, a combined runflat and double sided beadlock that can be fitted to any size and type of wheel (1) regardless of the shape and depth of the wheel well (10). The runflat device (2) can be fitted using standard tools and tightened through manipulation of a valve assembly (52).

Abstract: The present invention relates to a runflat device arranged to be disposed within a wheel well of a wheel having a rim (5) for securing a tire (1), the device comprising a valve assembly (7, 8, 9, 10) arranged to be secured to the wheel and a plurality of part-annular components, said runflat device arranged to be drawn onto the wheel by a retraction mechanism when air pressure is applied to said valve (7, 8, 9, 10).