| 摘要 |
PURPOSE:To satisfy running performance of tire on both paved road and unpaved road at the same time by specifying the set positions of straight channels on ground end sides and ground area ratio of division areas of a tread center and sholders divided by straight channels. CONSTITUTION:A tire is composed of four straight channels 1, 1, 1S, 1S provided along peripheral direction, plural numbers of subchannels 2 provided across the peripheral direction of the tire, and plural numbers of blocks divided with these main channels and subchannels 2, and the blocks are formed with Kerfs or slender channels 3. Ground end side straight channels 1S most neighboring to the ground end sides among the straight channels 1, 1, 1S, 1S are provided at the positions less than a third of whole ground width (TDW) of the tread from the ground end sides E on the tread. Ground area ratio of a center area WA pinched with ground end side straight channels 1S is made to be under 45%, and ground area ratio of sholder areas WS from ground end side straight channels 1S to the ground end sides is made to be over 65%. |
