Abstract: A vehicle wheel and adapter allowing the wheel to be fastened by means of a single knock-off type hub nut to a disk brake hub or brake drum of a vehicle utilizing wheels of the type that are attached by a plurality of lug bolts or lug nuts includes a circular adapter plate provided with mounting holes to permit the adapter to be attached using existing lug bolts or lug nuts. The adapter plate has an axially forwardly protruding central coaxial tube section externally threaded on an outer axial portion thereof, and a plurality of longitudinally disposed, arcuate transverse section splines protruding radially outwards from an intermediate longitudinal portion of the tube section. A wheel hub having a tubular front section and a larger diameter, dish-shaped rear section has an internally splined intermediate longitudinal portion provided with grooves adapted to longitudinally slidably receive the splines.

Abstract: A vehicle wheel and adapter allowing the wheel to be fastened by means of a single knock-off type hub nut to a disk brake hub or brake drum of a vehicle utilizing wheels of the type that are attached by a plurality of lug bolts or lug nuts arranged in a circular pattern includes a circular adapter plate provided with mounting holes to permit the adapter to be attached using existing lug bolts or lug nuts. The adapter plate has an axially forwardly protruding central coaxial tube section externally threaded on an outer axial portion thereof, and a plurality of axially forwardly protruding engagement bars disposed radially outwards from the tube section. A wheel hub having a tubular front section and a larger diameter, dish-shaped rear section has a flat, circular inner wall provided with grooves adapted to insertably receive the engagement bars of the adapter plate. The tubular front section of the wheel hub has an inwardly and rearwardly tapered, frusto-conically shaped entrance opening.