The invention relates to a radial tyre comprising a crown reinforcement and a tread having at least two circumferential grooves. The tread is made up of at least three layers, a radially outer first layer made up of a first compound having a volumetric electrical resistivity (rho1) such that log (rho1) < 6; a radially inner second layer made of at least three parts, at least the axially outer parts made up of a second compound having an electrical resistivity (rho2) such that log (rho1) > 10; at least one part, radially extending the compound of said first layer, made up of a third elastomeric compound having an electrical resistivity (rho3) such that log (rho3) < 6; a third layer, which is radially the innermost one, made up of at least five parts, at least the axially outer parts made up of a third elastomeric compound having a maximum value of tan (delta), denoted tan (delta) max, < 0.080; at least two parts made up of the second compound, and at least one part, radially extending part of said second layer made up of the third elastomeric compound, made up of said third elastomeric compound.
Tyre comprising tread made up of several elastomeric compounds
2015-08-05
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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