| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of enhancing durability performance of a tire while ensuring wet performance and dry performance of the tire. SOLUTION: In the pneumatic tire 1, a tire rotation direction is designated in one direction. In the pneumatic tire 1, a tread pattern is formed making a first main groove 2 extending to an opposite side in the tire rotation direction while bent or curved so as to become a projection to an inner side in the tire width direction making a point A existing in an area from a center line CL of a tread part to a virtual line l as an origin when the virtual line l corresponding to a ground-contact end of the tire is drawn, a second main groove 3 opened to the first main groove 2 at the point A and extending from the point A to an outer side in a tire width direction and an opposite side in a tire rotation direction, and a third main groove 4 extending to an outer side in the tire width direction and to an opposite side in the tire rotation direction without crossing to the first main groove 2 and the second main groove 3 and reaching to the virtual line l as basic tone. Further, at least one of the first main groove 2 and the second main groove 3 is arranged at a position not crossing to the virtual line l. COPYRIGHT: (C)2009,JPO&INPIT |
