FIELD: automobile industry.
SUBSTANCE: layout (200) of the tread blocks contains tread blocks (210, 220, 222, 224) and block elements (212, 214, 230) defining the groove pattern (310). The groove pattern (310) contains the first primary longitudinal groove (322), as well as the first (312) and second (314) primary transverse groove (312) extending from the primary boundary (B1) to the center line (CL). The first primary transverse block or block element (212) forms part of the side wall of the first primary longitudinal groove (322), part of the other side wall of the first primary longitudinal groove (322), the first primary end wall (E11) of the first primary longitudinal groove (322) and part of the side wall of the first primary transverse groove (312). The second primary transverse block or block element (214) forms part of the other side wall of the first primary transverse groove (312).
EFFECT: improved traction and tire response to control commands when driving on snow, ice and on an uncovered road.
14 cl, 9 dwg
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