An in-line skate wheel including a hub that positions and supports a bladder generally about the center line of the hub. The wheel hub comprises an inner surface forming a bore for receiving a wheel axle, an outer circumferential surface spaced from the inner surface and first and second edges. The hub also comprises a center line evenly spaced from the first and second edges of the outer surface. Contoured positioning tabs are located along the circumference of the outer surface and are alternately spaced on opposite sides of the center line to receive and retain the bladder therebetween in order to position it about the center line and support it during the use of the wheel.