A snow tire tread having a plurality of blocks separated by grooves and provided with sipe incisions dividing into several parts from a certain depth onwards, (complex sipes each having, when viewed in cross section, a rectilinear first part extending radially from the tread surface of the tread, and a second part extending the first part and comprising at least two branches each having an end. The tread has cavities each extending between the branches of a complex sipe and having a bottom situated at the same level as the ends of the branches. The cavities and the grooves of the tread are configured so that this tread has a voids surface ratio at the end of wear greater than or equal to 35%. Furthermore, the distance (D) between two branches of two adjacent complex sipes is at least equal to 2 mm.
BANDE DE ROULEMENT POUR PNEUMATIQUE NEIGE COMPORTANT DES INCISIONS ET DES CAVITES
TREAD FOR WINTER TIRE COMPRISING SIPES AND CAVITIES
WINTERREIFENLAUFSTREIFEN MIT EINSCHNITTEN UND HOHLRÄUMEN
03.05.2017
Patent
Elektronische Ressource
Französisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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