TIRE Russian patent published in 2023 - IPC B60C11/12 B60C11/03 

FIELD: automotive industry.

SUBSTANCE: pneumatic tire (1) includes longitudinal grooves (30), lug grooves (40), running portions (20) formed by the longitudinal grooves (30) and lug grooves (40), and a longitudinal narrow groove (50) that extends into direction along the circumference of the tire and is located on the running section (20). At least one longitudinal groove (30) of the longitudinal grooves (30) forming a running portion (20) on which the longitudinal narrow groove (50) is located is offset in the transverse direction of the tire and extends in the circumferential direction of the tire, and forms a zigzag including a long section (32) and a short section (33) having relatively different lengths. The longitudinal narrow groove (50) has one or more curved sections (51) with varying direction of travel in a running section (20) including a long section (50a) and a short section (50b) of relatively different lengths.

EFFECT: improved performance characteristics when driving on snow and wet road surfaces without deteriorating performance characteristics when driving on ice.

11 cl, 7 dwg