The present invention provides a spoked wheel including a rim having a continuous series of circumferential sections each of which has opposed ends and is connected at each of its ends to an adjacent section by means of a hinge that allows the two adjacent sections to pivot with respect to each other substantially in the plane of the wheel. The wheel also includes a hub that rotates with the rim and a plurality of spokes extending between the hub and the rim and supporting the rim on the hub. Each of the spokes having an end that is pivotally attached to the rim. At least one of the spokes is movable with respect to the hub in the plane of the wheel to change the angular spacing between adjacent spokes and alter the shape of the rim between a circular shape and a non-circular shape.