PNEUMATIC TIRE Russian patent published in 2022 - IPC B60C11/03 

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive industry. In pneumatic tire (1), outer second running section (32), central running section (33) and inner second running section (34) include a surface in contact with the road surface, which partially protrudes to the outer side in the tire radial direction from the tread profile reference line in the cross-sectional view in the tire meridian direction. Besides, width (Wg1) of outer shoulder main groove (21), width (Wg3) of inner central main groove (23) and width (Wg4) of inner shoulder main groove (24) are in the ratio Wg3 < Wg1 < Wg4; 1.05 ≤ Wg1/Wg3 ≤ 1.25 and 1.10 ≤ Wg4/Wg3 ≤ 1.30.

EFFECT: improved operation parameters on wet and dry surfaces.

15 cl, 11 dwg