Patent ID: 8251458

Claim:
An anti-sink rim system for a vehicle wheel for attachment to a wheel and tire assembly which is mounted to a vehicle, the anti-sink rim system comprising: a rim having a generally conical profile with an outer periphery and an inner portion joined to a support flange; the rim further comprising a rim support intermediate the outer periphery and the support flange; said support flange including openings therethrough which match and align with existing openings in a disk of the vehicle wheel, and including bolts which extend through the openings in the support flange and the existing openings to secure the support flange to the outer side of the vehicle wheel; a tire mounted to the rim, said tire having an outer diameter that is smaller than the diameter of the vehicle tire, said tire having inner and outer beads; an inner tube fitted inside of the tire such that a portion of the inner tube extends radially inward of the tire such that when the inner tube and tire are mounted to the conical profile of the rim the outer tire bead is seated on the rim support and a portion of the inner tube abuts the conical profile; whereby when the anti-sink rim system is mounted to outer side of a wheel and tire assembly of a vehicle, the inner tire bead is disposed between and in contact with the inner tube and the vehicle tire, and a portion of the inner tube is disposed between and in contact with the conical profile and the vehicle tire.