PNEUMATIC TIRE Russian patent published in 2016 - IPC B60C11/04 B60C11/12 B60C11/11 B60C11/13 

FIELD: motor car construction.

SUBSTANCE: tread pattern comprises two first main lengthwise grooves, shoulder surfaces of contact with the road surface and shoulder grouser grooves, shoulder cutouts and narrow lengthwise grooves. Note here that said shoulder grouser grooves converge at the centre, in the area of the shoulder surface of contact with the road surface, without connection with the first main lengthwise grooves. Said grooves comprises the first and second areas located closer to the first main lengthwise grooves than the first areas and feature the depth smaller as compared with the first areas. Shoulder cutouts are coupled with the second areas to extend to the first main lengthwise grooves. The narrow lengthwise grooves extend in lengthwise direction of the tire and feature the width smaller than that of the shoulder grouser grooves. Said narrow lengthwise grooves intersect the second shoulder grouser grooves.

EFFECT: perfected balance between wear resistance on dry road surface, stable steering on wet surface and stable steering on ice.

12 cl, 10 dwg, 9 tbl