US Patent 10363780 Pneumatic tire

A pneumatic tire is provided in the tread portion with zigzag crown circumferential grooves 3 having pitch length Pc, zigzag shoulder circumferential grooves 4 having pitch length Ps, crown lateral grooves 5 inclined at an angle θc, and shoulder lateral grooves 6 inclined at an angle θs wherein Ps>Pc and θs<θc. Both ends of the respective crown lateral grooves 5 are connected to the zigzag groove segments 3a or 3b of the crown circumferential grooves 3 which groove segments 3a or 3b are inclined with respect to the tire axial direction to the opposite direction to the inclining direction of the crown lateral grooves 5. The number NS of the shoulder lateral grooves 6 is more than the number Nc of the crown lateral grooves 5.