The rim base (5) has a drop-base section (11).

The rim base (5) is part of the rim of the motor vehicle wheel (1) for retaining a tire between the outer flange (4) and the inner flange (7).

In one embodiment, the unitary wheel of this invention further comprise a one-piece wheel of 5° and 15° drop center rims, providing a generally circular steel blank from a sheet stock of pre-determined substantially uniform thickness.

In the motor vehicle wheel (1), the drop-base section (11) or at least a part thereof is located adjacent to the tire seat (8) associated with the inner flange (7).

A heavy load truck or bus tire for mounting on a 15° drop center rim has a rounded bead toe that eliminates mounting problems and saves on material.

A drop centre rim, preferably made of steel, is provided on the wheel hub and is combined with a disc brake, which is axially inwardly offset relative to the wheel plane and which preferably has compressed air actuation.