Abstract: A unitary wheel and tire assembly for a wheelchair having an axle that includes a wheel portion and a tire portion. The wheel portion is molded from a first material and has a hub for rotative mounting to the axle of the wheelchair, a plurality of spokes extending at their innermost ends radially outwardly from the hub, and a circumferential rim connecting the plurality of spokes at their outermost ends. The circumferential rim has a radially outwardly opening annular channel extending completely therearound with a plurality of spaced-apart tabs extending radially outwardly therefrom with throughbores therethrough.