SIDE PART REINFORCING LAYER AND RUN-FLAT TIRE

摘要

Provided is a run-flat tire having improved durability when punctured and showing increased running distance and speed. A side part reinforcing layer (11) for a run-flat tire comprising a rubber composition obtained by compounding 0.1 to 50 parts by mass of a reinforcing material of poly(p-phenylene terephthalamide) with 100 parts by mass of a rubber component containing 20 to 80% by mass of natural rubber and/or polyisoprene rubber and 80 to 20% by mass of polybutadiene rubber, and the run-flat tire (1) using the same.