Tire having tread with an internal closed cellular rubber transition layer

摘要

Pneumatic tire having a rubber tread configuration comprising a circumferential non-cellular outer rubber cap rubber layer (2) which contains a tread running surface, a circumferential internal, intermediate closed cellular rubber transition rubber layer (3) positioned between said outer tread cap non-cellular rubber layer and a circumferential tread base non-cellular rubber layer (4); the internal cellular rubber layer (3) is exclusive of said tread running surface and abridges and joins said outer non-cellular rubber cap layer and said non-cellular base rubber layer of said tread configuration.