PNEUMATIC TYRE Russian patent published in 2018 - IPC B60C11/03 B60C11/13 

FIELD: motor vehicle industry.

SUBSTANCE: invention relates to the automotive industry and relates primarily to high-loaded tires. Pneumatic tire includes a plurality of central ground loosening grooves arranged at regular intervals in the circumferential direction of the tire, which cross the equatorial line of the tire and include a first rotatable portion of the groove and a second turning portion of the groove; a plurality of shoulder ground grooves arranged at regular intervals between a plurality of central ground loosening grooves in the circumferential direction of the tire, extending outwardly in the transverse direction of the tire, the inner end in the transverse direction of the tire being located externally at the end of the central ground groove in the transverse direction of the tire; a pair of longitudinal primary grooves with which the ends of the central ground loosening grooves are serially connected and the inner ends of a plurality of shoulder ground grooves in the transverse direction of the tire; and a longitudinal secondary groove with a wavy profile disposed along the entire circumference of the pneumatic tire, the first rotatable groove area of the central ground loosening groove of the central ground loosening grooves from the plurality of central ground loosening grooves adjacent in the circumferential direction of the tire, and the second rotatable groove portion of the other central ground groove are alternately connected to the longitudinal secondary groove, and wherein the longitudinal secondary groove includes a third rotatable groove portion and a fourth rotatable groove portion.

EFFECT: improvement in the performance of the tire by increasing of the resistance to heating in the region of the running area in the central zone of the tread.

13 cl, 6 dwg, 2 tbl