The invention relates to a radial tyre comprising a crown reinforcement and a tread which is connected to two beads by two sidewalls, said tread comprising at least two radially superposed layers of elastomeric compounds. A first layer, which forms the radially outer part of the tread, is made up of a first elastomeric compound having a G* modulus > 1.8 MPa; a second layer, radially on the inside and in contact with said first layer is made up of at least three parts, the axially outer parts being made up of a second elastomeric compound having a maximum value for tan ([delta]), denoted tan ([delta]) max, strictly lower than 0.060, and at least one part axially in contact with an axially outer part being made up of a third compound having a G modulus value greater than 1.2 MPa and at least 5% lower than that of the first elastomeric compound and a maximum value for tan ([delta]), denoted tan ([delta]) max, comprised between 0.060 and 0.120.
TYRE COMPRISING A TREAD MADE UP OF SEVERAL ELASTOMERIC COMPOUNDS
2015-08-19
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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