Rubber composition for sidewall reinforcing layer or sidewall, and tire

Abstract

The present invention aims to provide a rubber composition for a sidewall reinforcing layer or a sidewall, which has sufficient thermal conductivity and low heat build-up property as well as excellent rigidity and run-flat durability. The present invention also aims to provide a pneumatic tire such as a run-flat tire, which has a sidewall reinforcing layer or sidewall that is produced using the rubber composition. The present invention relates to a rubber composition for a sidewall reinforcing layer or a sidewall, which contains a diene rubber and a coal-pitch based carbon fiber.

Dependencies are inferred from the claim text.