| 摘要 |
A pneumatic tire comprises a tread portion having a plurality of block-shaped or rib-shaped lands defined by a plurality of tread grooves, wherein each edge portion of the same block-shaped or rib-shaped land located at a boundary between a ground contact region and a side wall of the block-shaped or rib-shaped land is subjected to chamfering convexly outward in a radial direction of the tire at a curvature varied in accordance with a distance from a given position of the block-shaped or rib-shaped land.
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