Patent ID: 9718313
Date: 2017-08-01
CPC Classifications: B60C

Claim:
1. A tire with a radial carcass reinforcement, comprising: a crown reinforcement, a tread radially capping the crown reinforcement and connected to two beads by two sidewalls, wherein the tread comprises at least two layers of blended elastomeric compounds that are radially superposed and have a voids ratio that is lower in the central part than at the axially outer parts, wherein a first layer of blended elastomeric compounds of the tread is made up of: a first blended elastomeric compound forming a part extending at least into the region of the equatorial plane, and at least two axially outer parts formed of a second blended elastomeric compound, wherein the first blended elastomeric compound has a macro dispersion Z-value higher than 65 and a maximum tan(δ) value, denoted tan(δ)max, lower than 0.150 at 100° C., and wherein the elongation at break in a tearability test of the second blended elastomeric compound at 100° C. has a value at least 10% higher than that of the elongation at break of the first blended elastomeric compound in a tearability test at 100° C.