TYRE WITH IMPROVED BOARDS Russian patent published in 2016 - IPC B60C15/06 B60C15/00 

FIELD: motor industry.

SUBSTANCE: invention relates to automotive industry. Tyre (10) comprises two beads (50) containing circular reinforcing structure (70) and carcass reinforcement (60), which is fixed on two sides to form the main section (62) and wrapped section (63). Each wrapped section passes radially outside to the edge (64) located at radial distance DEC, which is less than or equal to 10 % of radial height H of tire. Every bead comprises rib (120) from rubber composition with modulus of elasticity of more than 40 MPa, passing radially on radial distance DEE1 making from 10 % to 15 % of the height H. Every bead comprises extra outer band (130) from rubber composition, which has modulus of elasticity G′ smaller than or equal to 15 MPa and modulus G" of viscosity, such that: G" [MPa] ≤ 0.2 G' [MPa] - 0.2 MPa, passing between at least 20 % and 25 % of the height H.

EFFECT: technical result is reduced rolling resistance of tire at reduced cost.

5 cl, 11 dwg, 1 tbl