| 摘要 |
PROBLEM TO BE SOLVED: To provide a run-flat radial tire which can suppress the occurrence of a buckling phenomenon at a tire side part at run-flat traveling.SOLUTION: A tire 10 has: a carcass 14; an inclined belt layer 16 constituted of belt plies 16A, 16B which are arranged outside a tire radial direction of the carcass 14; a tread part 20 in which a plurality of circumferential main grooves 21 are formed at a tread; and a side reinforcing rubber layer 24 which is arranged at a tire side part 22, located inside the tire rather than the carcass 14, extends to the tread part 20 side from a bead part 12, and reinforces the tire side part 22. When setting a distance from an end part 16AE of the belt ply 16A having a maximum width up to an opening edge 21AE of the circumferential main groove 21A along a tire width direction as A[mm], a width of the belt ply 16A as B[mm], and a groove depth of the circumferential main groove 21A as C[mm], a relationship of A/B>0.025×C+0.06 is satisfied. |
