PNEUMATIC TYRE Russian patent published in 2016 - IPC B60C11/04 B60C11/11 B60C11/03 

FIELD: motor industry.

SUBSTANCE: invention relates to automotive industry, in particular, to non-studdable tire with tread asymmetric pattern, designed for all operating conditions. External central main longitudinal groove passes in zigzag pattern and consists of alternating small and large pieces. Large pieces of grooves are inclined at angle from 5 to 30° relative to tire lengthwise direction. Inner central main longitudinal groove is widest among main lengthwise grooves. Outer mid transverse grooves are widest among transverse grooves. Distance Li from straight line width of the inner central main lengthwise groove to tire equator is less than distance from central line zigzag amplitude Lo from external central main lengthwise groove to tire equator.

EFFECT: technical result is improved running characteristics of tire on dry and wet road surfaces without deterioration of on snowy and icy roads.

8 cl, 3 dwg, 1 tbl