| 摘要 |
PROBLEM TO BE SOLVED: To improve the offroad performance while making left and right wheels in common. SOLUTION: Outer lateral grooves 3, 3 extended from an external tread edge To are connected by first to fourth outer longitudinal connecting grooves 6A-6D. Inner lateral grooves 5, 5 extended from an internal tread edge Ti are connected by inner longitudinal grooves 7. An angleθ0 of a groove center line X0 of the outer lateral groove 3 is 40-60 deg., an angleθ5 of a groove center line X5 of the inner lateral groove 5 is 70-100 deg., and anglesθ1-θ4 of the groove center lines X1-X4 of the first to fourth outer longitudinal grooves 6A-6D are 20-50 deg., and these anglesθ1 toθ4 are different from each other. |
