Patent ID: 7198085

Claim:
A tire/wheel assembly having a run-flat support body inserted into a hollow part of a pneumatic tire, the run-flat support body including: an annular shell having an outer peripheral side thereof as a support surface and having an inner peripheral side thereof formed into fork-shaped open legs; and elastic tings supporting the end parts of the fork-shaped open legs on a rim, wherein bent parts bent outward are formed at the end parts of the legs of the annular shell, in a cross section of the annular shell perpendicular to a circumferential direction, an inclination angle (α 1 ) of a line segment (L 1 ) relative to the direction perpendicular to the tire axis is to within +5°, the line segment (L 1 ) extending from the axially outer end (P 3 ) of each of the bent parts through a hump apex (P 1 ) on the rim, an area of the annular shell equal to a height (B) thereof is formed linearly, the height (B) being at least 35% of a cross-sectional height (A) from the radially inner end of the annular shell, an inclination angle α 2 ) of an extension line (L 2 ) along the inner surface of the linear area relative to the direction perpendicular to the tire axis is set to 15 to 30° axially inward, and the extension line (L 2 ) is set to pass between the hump apex (P 1 ) on the rim and a toe tip (P 2 ) of the tire bead.