Tyre with asymmetric belt structure and method of mounting said tyre on a vehicle

摘要

A tire has stiffening layer (8) lying between radial carcass (2) and a multi-layer crown (3). The stiffening layer is only on one side of the equatorial plane. The tire has marks to indicate the side having the stiffening layer so the tire is correctly mounted on a wheel. Each layer has parallel cables or filaments. The cables in adjacent layers of the crown are crossed. The cables in the stiffening layer are at 50 - 90 degrees to the circumferential direction. Independent claims are included for the following: (a) Non-symmetrical tires as above for a vehicle. The stiffening layer is 15-45% of the width of the crown and its furthest edge is at 35-50% of the crown width from the equatorial plane. (b) Mounting a set of tires as in (a) to a vehicle. (c) Modification of (b) omitting the 35-50% limit. Preferred Features: The stiffening layer is 20-35% of the width of the crown. The metallic cables or filaments in the stiffening layer have a combined average stiffness≥1GPa. The crown has textile cables. The angle of the cables in the stiffening layer and the adjacent layer of the crown are the same.