| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire simultaneously improving three performances, rolling resistance performance, compartment noise(R/N) performance, and straight running maneuvering stability performance. SOLUTION: Tread rubber has a center region rubber across a tire equator face and different types of both-side region rubbers continued thereto, the both- side region rubber has a composite rubber layer constitution of an outer rubber layer and a different type inner rubber layer, a dynamic storage elasticity EA' of the center region rubber has a larger value than the dynamic storage elasticity EB' of the outer rubber layer, and the inner rubber layer has the physical property tanδ0.1 or less.
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