PNEUMATIC TYRE Russian patent published in 2018 - IPC B60C11/13 B60C11/12 

FIELD: automotive industry.

SUBSTANCE: invention relates to the automotive industry. Pneumatic tire contains a plurality of circumferential main grooves and a contact portion bounded by two of the plurality of circumferential main grooves. Contact portion contains a plurality of first transverse grooves, a plurality of second transverse grooves that are wider than the first transverse grooves, and a plurality of grooves formed only in the opening portions of the first transverse grooves. Width Wg1 of the grooves, which are the first transverse grooves, and the width Wg2 of the grooves, which represent the second transverse grooves, have a ratio of 1.0 mm≤Wg2 – Wg1≤4.0 mm.

EFFECT: improved tire performance when driving in snow and noise performance.

17 cl, 10 dwg