| 摘要 |
A pneumatic radial tire or run flat tire comprises a pair of bead cores (1), a radial carcass (2) of a rubberized cord ply, a belt (3) comprised of rubberized belt layers, a tread (4) disposed outside the belt in the radial direction, and a side portion reinforcing layer (5) extending along an inner surface of the carcass over the full region of the side portion and having a crescent shape in a radial section thereof, in which when the peripheral length of the side portion reinforcing layer (5) is divided into three equal parts along an inner surface of the tire, a thickness (T) of the side portion reinforcing layer (5) in a section in a radial direction of the tire is thickest in the vicinity of a 1/3 point (C) located outward in the radial direction. <IMAGE> |
