The invention relates to a tyre (1) of which the tread (6) comprises at least three circumferential grooves (3), said tread comprising at least three radially superposed layers (61, 62, 63) of elastomeric compounds. According to the invention, a first elastomeric compound constituting the first layer (61) forming the radially outer part of the tread has a tan (delta) max higher than 0.110, a second elastomeric compound constituting the radially inner second layer (62) has a tan (delta) max at least 10% lower than that of the first elastomeric compound, the radially innermost third layer (63) of the tread is made up of at least two first parts and of at least three second parts axially, each one in contact with at least one of said at least two first parts, said at least two first parts axially centred on a radial plane passing through one of said at least three circumferential grooves being made up of the second compound and said at least three second parts being made up of a third elastomeric compound having a maximum value of tan (delta), denoted tan (delta) max, at least 10% lower than that of the second elastomeric compound.
Tyre comprising tread made up of several elastomeric compounds
2015-08-12
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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