Patent ID: 6805176
Filing Date: 2004-10-19
Classification: B60C,Y10T

Abstract:
A tire/wheel assembly in which a run-flat support member is inserted in a cavity of a pneumatic tire, the run-flat support member including a circular shell in which an outer circumferential side thereof is used as a support surface and an inner circumferential side thereof is opened to have two leg portions, and elastic rings supporting the ends of the two leg portions on a rim,wherein the outer circumferential surface of the circular shell in a cross-section cut in a tire width direction has a shape with a plurality of convex portions aligned in a tire width direction, and the convex portions have a plurality of different kinds of radii of curvature wherein the convex portion, amongst the plurality of convex portions, disposed on an outer side of a vehicle body when fitted to the vehicle is formed to have a radius of curvature smaller than that of any other convex portion and the convex portion located on the outer side of the vehicle body has a radius of curvature within a range of 0.6 to 0.9 times the radius of curvature of th other convex portion.