| abstract |
Edge separation in a turned-up end portion ( 5 E) of a carcass ply ( 5 ) is suppressed. In a pneumatic tire comprising a bead core ( 4 ) embedded in a bead portion ( 3 ) and a carcass ply ( 5 ) turned up and locked around the bead core ( 4 ), a rubber sheet ( 10 ) is prepared using a wet masterbatch containing natural rubber and/or polyisoprene rubber and carbon black, and the rubber sheet ( 10 ) is arranged on at least one of front and back sides of the turned-up end portion ( 5 E) of the carcass ply ( 5 ). |