Abstract: A laterally installing wheel including a rim in which a rim main portion and a side ring are disconnectably coupled to each other at a coupling portion of the rim main portion and the side ring, wherein the coupling portion is constructed such that a gap between the rim main portion and the side ring is inconspicuous from outside in the axial direction of the wheel. The coupling portion is provided at an axially inner portion of the rim. In a case where the coupling portion is provided at an axially outer portion of the rim, the coupling portion is located at an inconspicuous portion.

Abstract: The present invention is related to a demountable tire rim assembly having a spare inner wheel which permits running during the run flat condition. The demountable tire rim includes two complementary annular parts provided with reciprocal threaded coupling members on the perimeter of the annular parts which include threaded and non-threaded sectors which are structurally arranged to secure the annular parts together.

Abstract: A pneumatic tire and a mounting system therefor, having constructional features designed to provide optimized operational characteristics. The tire has a low aspect ratio .lambda. and a low height ratio .theta. conforming substantially to the relations .lambda.=0.236/.theta. and 0.32<.theta.<0.39. The mounting system includes a vehicle axleborne drum and a pair of ring members adapted to be securely fastened to the drum, each ring member defining a bead seat, a bead restraining flange and a sidewall-supporting extension, and the ring members being adhered to the tire at the beads and the lower sidewalls. A layer of a suitable sealant at the juncture between each ring member and the drum renders the joints airtight.

Abstract: A motor vehicle wheel comprising two mating, annular, permanently connected parts formed without cutting and composed of different, but congenerically similar, materials. The wheel is composed of an inner wheel part, which comprises the inner and greater part of the rim bed together with the wheel disc, and an outer wheel part which forms the remaining and smaller part of the rim bed. The two parts are connected together at their respective rim bed portions to provide a complete rim bed. The two wheel parts are provided with mating, generally annular, contiguous connection surfaces which may be of cylindrical, conical and/or serrated configuration and which are joined in an air-tight manner.

Abstract: A pneumatic tire and wheel assembly may be disassembled, so that the tire may be removed after deflation, simply by rotating a cylindrical removable outer rim so as to disengage a respective locking lug on the wheel from a corresponding recess on the removable outer rim. There are eight locking lugs spaced 45 degrees apart on the fixed rim of the wheel and corresponding recesses in the removable outer rims so that without removing the fixed wheel rim from the hub of the automobile it is possible simply by rotating and pulling to remove the removable outer rim after first deflating the tire and then it is possible to remove and replace the tire without the use of bead breaking or bead stretching equipment by inflating the tire back to normal pressure thereby locking the removable rim in place.