| 摘要 |
<p>Provided is a pneumatic tire with which thermal radiation in a tread part is promoted, and the temperature of the tread part is lowered. In a tread track, at least one circumference direction groove which extends along a tire circumference direction, and a plurality of width direction grooves which open in the circumference direction groove and have wider groove widths than the circumference direction groove, are formed upon a pneumatic tire. Concave parts are formed in the groove walls of the circumference direction groove facing the width direction grooves. At least one protrusion part is formed in the bottom of the circumference direction groove between adjacent concave parts in the tire circumference direction.</p> |
