PNEUMATIC RADIAL PASSENGER CAR TIRE (VARIANTS) Russian patent published in 2023 - IPC B60C9/22 

FIELD: car tires.

SUBSTANCE: group of inventions relates to pneumatic car tires of radial design, the nominal profile width of which is 175 mm, 185 mm, 195 mm, 205 mm, 215 mm, 225 mm. The breaker-tread part consists of a tread made of at least three types of rubber (running part, sub-groove layer, mini-sidewall) with a width of the tread according to the mould (A), the first layer of a steel cord breaker with a width (B) depending on the width of the tread (B = A + X), the second layer of the steel cord breaker with a width (C), depending on the width of the first layer of the breaker (C = B - Y), cut at an angle of 20-25° and superimposed crosswise in relation to each other, and one or two layers of a shielding textile layer with a width (D), depending on the width of the first layer of the breaker (D = B + Z), as well as the thickness of the sub-groove layer (E), which differs for summer tires and for winter tires thick.

EFFECT: improvement in the operational characteristics of the tire.

32 cl, 4 dwg, 7 tbl