FIELD: automotive engineering.
SUBSTANCE: pneumatic tire comprises two collars intended to come into contact with the rim, a carcass reinforcement anchored to each collar by a reinforcing collar around the circumference of the element. And each collar has in its composition an internal annular insert. Wherein, the specified internal annular insert is formed by rubber mixture that includes elastomeric matrix on basis of polyisoprene with predominance of 1,4-CIS-links of isoprene bonds, from 45 to 60 mass parts per hundred mass parts of elastomer, reinforcing filler, including from 43 to 55 mass parts per hundred mass parts of elastomer, reinforcing inorganic filler with specific surface, determined by BET method (Brunauer-Emmett-Teller), composing from 155 m2/g to 185 m2/g, binder to bind reinforcing inorganic filler with elastomer and vulcanizing compound.
EFFECT: increase the service life of tire.
17 cl, 1 dwg, 2 tbl, 1 ex
