UNIVERSAL TIRE Russian patent published in 2022 - IPC B60C11/00 

FIELD: machine building.

SUBSTANCE: invention relates to automotive industry. Tire comprises tread, at least one carcass layer located radially inside the tread, and at least one layer located radially between the tread and at least one carcass layer. Tread has surface with contact width CW. Tread is axially divided into three zones: two shoulder zones located axially outside the tread and consisting of a shoulder rubber composition, and a central zone located axially between two shoulder zones, formed from a centre rubber composition different from the shoulder rubber composition. At least one layer contains multiple reinforcing cords passing at angle A in range from 35 to 55 degrees relative to circumferential orientation. Glass transition temperature Tg of the centre rubber composition is at least 10 °C higher than the glass transition temperature of the shoulder rubber composition.

EFFECT: improvement of operational characteristics both on normal and on winter road surface at the same time.

8 cl, 3 dwg, 1 tbl