| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire for an automatic two-wheeled vehicle for travelling on an uneven ground, which can suppress a rise in an internal temperature in a side wall portion to exert excellent steering stability for a long term and effectively prevent progression of a crack that may occur on the outer surface of the side wall portion.SOLUTION: On the outer surface of a side wall portion 2 are provided a plurality of fin-like protruding portions 10, protruding from the outer surface and then extending toward a tire radial direction, at intervals in the tire radial direction. A surface of at least an end portion 10a in the radial direction of respective end portions inside and outside in the tire radial directions of the fin-like protruding portions 10 is formed by a cross-section in a tire width direction into an arc-like shape protruding toward the inner surface of the tire, and the arc-like surface of the outer end portion 10a in the radial direction is smoothly connected to an outer side surface 9a of a shoulder block 9 arranged outermost in the tire width direction of a tread portion 3. |
