Rubber composition for side walls, method of producing the same, and pneumatic tire

摘要

There are provided a rubber composition for side walls containing 100 parts by mass of a first rubber component consisting of 30 to 70 mass % of natural rubber and 70 to 30 mass % of epoxidized natural rubber, 20 to 60 parts by mass of silica, and 3 to 60 parts by mass of a second rubber component consisting of liquid rubber, as well as a method of producing the same and a pneumatic tire provided with a side wall rubber consisting of the rubber composition. The rubber composition for side walls has a higher content of source materials deriving from non-petroleum resources, and has excellent durability and an anti-crack-growing property.