| abstract |
The invention relates to a tyre sidewall having a rubber composition based on at least one blend of polyisoprene, natural rubber or synthetic polyisoprene, and polybutadiene BR, a reinforcing filler comprising carbon black and silica, a crosslinking system, characterized in that the reinforcing filler predominantly comprises carbon black, that the content of carbon black ranges from 20 to 30 parts per hundred parts of elastomer, phr, and the content of silica ranges from 1 to 7 phr and that the total content of reinforcing filler is less than or equal to 35 phr, the dispersion of the filler in the elastomeric matrix having a Z value greater than or equal to 75. |