PNEUMATIC TIRE FOR HIGH-LOADED CARS Russian patent published in 2019 - IPC B60C11/03 B60C11/13 

FIELD: manufacturing technology.

SUBSTANCE: pneumatic tire includes a tread pattern that includes a pair of longitudinal main grooves, central wide groove extending in the central zone between a pair of longitudinal main grooves, and central lug grooves located in a first central zone and second central zone on both sides of the central wide groove in the transverse direction of the tire. Each of the central lug grooves has a linear profile and extends into the central wide groove. Central lug grooves and a pair of longitudinal main grooves have a smaller groove width than shoulder lug grooves located in the shoulder area. Central lug grooves of the first central zone and central lug grooves of the second central zone run parallel to each other and extend into the central wide groove in different positions in the circumferential direction of a tire. Wide central groove has a constant groove depth that is less than the maximum groove depth of a pair of longitudinal main grooves and central locking grooves.

EFFECT: improved warming resistance and improved resistance to grabbing stones.

11 cl, 6 dwg, 3 tbl