| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire that improves wet performance in a worn condition and improves both wandering performance and maneuvering stability. SOLUTION: The tire has a rib/lug tread pattern having at least one main groove 1a, 1b, 1c extending in a circumferentially continuous zigzag, and lug grooves 4a and 4b extending from a tread shoulder side to a tread center portion. The zigzag main grooves 1a to 1c define shoulder ribs 3a and 3b so that the width of the shoulder ribs 3a and 3b along the tire axis is largest at places provided with the lug grooves 4a and 4b, and at least one of the main grooves 1a to 1c has a twisted structure with a zigzag angle increasing to the circumference with wear on the tire. |
