| 摘要 |
<p>Provided is a heavy duty pneumatic tire which is configured so that the land sections in the center region of the surface of the tread are appropriately defined by various types of narrow grooves to allow the pneumatic tire to achieve high fuel economy and to have excellent water drainage characteristics. One example of this heavy duty pneumatic tire is configured in such a manner that a pair of circumferential main grooves (2a, 2b) extending in the circumferential direction of the tire is provided in the surface of the tread (1) so as to be located across the equator (E) of the tire, and as a result, the surface of the tread (1) is divided into the center region (3) and both side regions (4a, 4b). Three circumferential narrow grooves (6a-6c) extending in the circumferential direction (C) of the tire are provided in the center region (3) to define and form four center rib-shaped land sections (7a-7d). As a result of the configuration, when the tire makes contacts with the ground, the openings of the circumferential narrow grooves (6a-6c) close, and this causes the center rib-shaped land sections (7a-7d) which are located adjacent to each other across the circumferential narrow grooves (6a-6c) to make contact with and support each other.</p> |
