TIRE Russian patent published in 2024 - IPC B60C11/13 B60C11/11 

FIELD: machine building.

SUBSTANCE: invention relates to automotive industry. Tire comprises, on tread surface (12), a plurality of shoulder main grooves extending in a circumferential direction of the tire; a plurality of lug grooves (351) passing in a direction crossing the shoulder main groove, and a plurality of blocks B formed by shoulder main grooves and lug grooves (351). Tread surface (12) of block B includes longitudinal narrow grooves (352), each of which passes along the tire circumference, and a plurality of slots provided on both sides of the longitudinal narrow grooves in the tire transverse direction to be separated from the longitudinal narrow grooves (352), which are arranged side by side in the tire circumferential direction and extend in the tire transverse direction. Longitudinal narrow groove (352) includes section (3521) with shallow bottom and section (3522) with deep bottom, which are characterized by different depth from tread surface (12). Section with deep bottom (3522) has depth from surface (12) of tread deeper than depth of section (3521) with shallow bottom and is provided in central section of block B in direction along tire circumference.

EFFECT: tire longer life.

9 cl, 6 dwg