pneumático comportando uma estrutura de reforço de tipo carcaça e utilização de um pneumático

摘要

The invention relates to a tire comprising a carcass type reinforcing structure and comprising under the tread strip a crown reinforcing structure consisting of at least two layers of reinforcing elements. According to the invention, the carcass type reinforcing structure comprises at least two half-layers extending at least from the shoulders to the beads and each having an end under the tread strip and at least the surface of the tread strip consisting of a first polymer compound extending at least between the ends of each of the half-layers and of at least a second polymer compound having physicochemical properties that differ from those of the said first polymer compound and covering at least part of each of the half-layers.