To make a steering stability and a comfortability to ride compatible at a high dimension.

The pneumatic tire is provided with a tread part 1; a side wall part 2; a bead part 3; and a carcass 5 which troidally extends between bead cores 4 disposed at the bead part 3 and of which a side part is radially and outwardly wound back around the bead core 4. A ratio (A/B) of a side height (A) against a tire cross section height (B) is made to 0.35-0.55. At least one layer of cord-reinforcing layer 7 comprising a cord extending to a direction forming 90° against a radial line segment is arranged from a neighborhood of the bead core 4 to a radial outward area.