| 摘要 |
The present invention relates to a pneumatic tire that achieves, without degrading the steering stability, the reduction in road noise due to tire vibration when a vehicle drives on a rough road surface. The present pneumatic tire is characterized in that a tread portion is formed by at least two layers consisting of cap rubber on a road-contact surface side and base rubber on a side adjacent to a belt layer, that hollow particles having a mean particle diameter of at most 500 mum are mixed in a volume ratio of 2% to 40% into the base rubber, and that a thickness of the base rubber is made to be at least 1.0 mm.
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