TIRE FOR A HEAVY DUTY VEHICLE

摘要

A tire which is intended to bear heavy loads and the endurance of which is improved. The tire contains, in the bead region, at least one internal annular insert, the said insert having a rubber composition containing a polyisoprene elastomer, between 45 phr and 60 phr of a reinforcing filler containing from 43 to 55 phr of a reinforcing inorganic filler with a BET specific surface of between 155 and 185 m2/g, and a coupling agent for bonding the reinforcing inorganic filler to the elastomer.

主权项

1. A tire comprising:
two beads intended to come into contact with a wheelrim, a carcass reinforcement anchored in each bead to a bead reinforcing circumferential element, each bead comprising at least one internal annular insert,
wherein this internal annular insert consists of a rubber composition comprising:
an elastomer matrix based on at least one polyisoprene having a majority of cis-1,4-enchainments,between 45 and 60 parts per hundred parts by weight of elastomer, phr, of a reinforcing filler comprising from 43 to 55 phr of a reinforcing inorganic filler with a BET specific surface of between 155 and 185 m2/g,a coupling agent for bonding the reinforcing inorganic filler to the elastomer, anda vulcanization system.