Abstract: A composite vehicular wheel having inner and outer sides, having a hub with a peripheral circumference, and a wheel rim having a tire attachment surface, and a recessed base with inner and outer ends and having a flange at its outer end at a substantially right angle to the base, the wheel rim being releasably attached along respective contact surfaces to the hub, and means on the outer side of the flange for attaching the wheel rim to the hub, the peripheral circumference of the hub conformingly matingly adjoins an axially disposed transitional surface on the inner side of the recessed base of the wheel rim, the transitional surface having a flat hump and extends from the inner side of the flange of the recessed base to an edge of the tire attachment surface.