PNEUMATIC TIRE Russian patent published in 2014 - IPC B60C11/12 B60C11/04 B60C11/11 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Proposed tire comprises multiple circular main grooves extending in tire circumference and multiple running surfaces separated and composed by said circular main grooves in tread zone. Multiple running sections have multiple sipes. At least 90% of sipes located in inner side area represent are 2D sipes and at least 90% of sipes in outer side surface are 3D sipes. Tread zone comprises top and bottom rubber layers. Rubber hardness H1_in at -10°C and rubber hardness H2_in at 20°C of rubber top layer 151_in in inner side area, and hardness H1_out at -10°C and hardness H2_out at 20°C of rubber top layer 151_out in outer side area are related by relationships H1_in<H1_out and H2_in<H2_out.

EFFECT: better stability on dry and snowy surface.

18 cl, 9 dwg