| 摘要 |
PROBLEM TO BE SOLVED: To attain light weight of a tire without lowering run flat performance. SOLUTION: Side reinforcing rubber layers 11 taking charge of load supporting functions when the tire deflates is provided in a side wall part 3 and on a tire inner cavity side. In the side reinforcing rubber layer 11, a plurality of recessed groove-shaped recessed parts 21 having anglesθof 0 to 60°in a tire radial direction, extending to the tire radial inside/outside and separating in a tire peripheral direction are provided on an internal surface on the tire inner cavity side of a reinforcing base part 20 having a substantially crescent-shape in cross section. COPYRIGHT: (C)2005,JPO&NCIPI |
