| abstract |
The invention relates to a rubber composition with improved rolling resistance, comprising at least: a diene elastomer containing mainly an isoprene elastomer; a reinforcing filler comprising between 5 and 60 phr carbon black having a specific surface area (BET) of less than 70 m²/g, known as coarse black, and between 0 and 30 phr carbon black having a specific surface area (BET) greater than or equal to 70 m²/g, known as fine black; a salt of an alkali metal, an alkaline earth metal or lanthanide; and a crosslinking system. |