| 摘要 |
PROBLEM TO BE SOLVED: To provide a run-flat radial tire that can suppress a buckling phenomenon from occurring at a tire side part during run-flat travelling.SOLUTION: A tire 10 comprises: a carcass 14 extending across a pair of bead parts 12; an inclined belt layer 16 that is provided outside in a tire radial direction of the carcass 14 and constituted of at least one belt ply; a tread part 20 that is provided outside in the tire radial direction of the belt layer 16 and has a plurality of circumferential grooves 21 formed; and side reinforcing rubber 24 that is provided at a tire side part 22 and extended along an inner face 14A of the carcass 14 from the bead part 12 side to the tread part 20 side to overlap a belt ply 16A with the maximum width, where an overlapping width P between the belt ply 16A and the rubber in the tire width direction is set to have a length equal to 20% or more of a section height SH, and an upper end part 24B of the tread part 20 side is positioned closer to outside in the tire width direction than a groove bottom 21AB of a circumferential groove 21A provided outermost in the tire width direction. |
