A wheel construction including a rigid circular disk having a hole therethrough in the approximate center thereof. A bearing structure housed in a flexible sleeve is resiliently supported in the hole to facilitate a rotation of the disk about a defined axis of rotation. An annulus of moldable synthetic resin material is fixedly secured to the peripheral surface of the disk. The annulus has a rigid characteristic and the periphery thereof defines a tread mounting surface. An annular tread made of moldable synthetic resin material is fixedly secured to the tread mounting surface on the annulus. The tread has an outer diameter that is precisely concentric with the axis of rotation of the wheel. The materials of the tread and of the annulus are compatible with each other such that the tread becomes bonded to the annulus upon a molding thereof around the peripheral surface of the annulus. In one embodiment, the rigid circular disk is composed of a pair of identical metal stampings which are held together solely by the annulus.