NON-STUDDED TIRE Russian patent published in 2012 - IPC B60C11/11 B60C11/12 

FIELD: automobile industry.

SUBSTANCE: this invention covers tread design of an automobile tyre including tread 2 equipped with at least 6 bulge rows (R1-R4), where each bulge (B) is equipped with slots of min. 3.0 mm depth, while bulge rows include at least 2 rows of crown area (CR) located at crown area Ac stretching from center line (C) of a tire being its center, so that its width is 50% of tread width (TW), and at least 2 bulge rows of shoulder area (Sh) located at each external side from bulge rows of crown area (CR). Lateral grooves 4 equipped in a bulge row are inclined oppositely to the axis with lateral grooves provided in maximum adjoining bulge row.

EFFECT: improvement of tire stability during braking action at icy and snow road surfaces.

4 cl, 8 dwg