RUN FLAT TIRE

摘要

A run flat tire having reinforced rubber layers (9a, 9b) disposed in the side wall parts has an annular swollen part (10) and an annular second bead (1b). The annular swollen part (10) is formed on the outer side, in the lateral direction of the tire, of a bead part (1) disposed on the outer side of a vehicle, and has an inner peripheral surface (11) facing the outer peripheral curved surface of a rim flange when a specified rim is installed on the tire. The annular second bead (1b) is disposed in the annular swelled part (10). Both the reinforced rubber layers (9a, 9b) disposed on both sides have a rubber hardness in the range from 65° to 82°. Belt layers (7) disposed on the lower side of the tread part (4) have longitudinal bending rigidity in the range from 0.9 to 2.1 × 10⁶ N.m².