The invention relates to a tyre, having a radial carcass reinforcement, comprising a crown reinforcement, itself capped radially by a tread comprising at least three radially superposed layers of elastomeric compounds. According to the invention, a first layer (61) forming the radially outer part of the tread is made up of a first elastomeric compound having a maximum value of tan(δ), denoted tan(δ)max, strictly less than 0.150, a second layer (62) radially further towards the inside is made up of a second elastomeric compound, at least one third layer (63) radially between the two first layers is made up of a third elastomeric compound having a Vickers hardness at least 12 times greater than that of the first elastomeric compound and at least 12 times greater than that of the second elastomeric compound, in a meridian cross section of the tyre, the ratio of the area of the third elastomeric compound to the sum of the areas of said at least three layers being between 10% and 30% and the centre of gravity of the third elastomeric compound being situated radially between 30% and 70% of the tread pattern height of the tread.
PNEUMATIQUE COMPORTANT UNE BANDE DE ROULEMENT CONSTITUEE DE PLUSIEURS MELANGES ELASTOMERIQUES
TYRE HAVING A TREAD MADE UP OF MULTIPLE ELASTOMERIC COMPOUNDS
REIFEN MIT EINER LAUFFLÄCHE AUS MEHREREN ELASTOMERVERBINDUNGEN
2023-08-23
Patent
Elektronische Ressource
Französisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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