| 摘要 |
The present invention provides a pneumatic tire that can exhibit high ice performance throughout a period of use of the tire, and can reduce a rejection rate without complicating production of the tire. The pneumatic tire includes: a plurality of land portions 4 partitioned by grooves 2 and 3 and formed in a tread surface 1a; and a sipe 5 formed in each of the land portions 4, wherein a plurality of first protrusions 7 are formed on only one of sipe inner wall surfaces 6 and 6 opposed to each other in the sipe 5, each of the first protrusions 7 continuing in a tire depth direction from the tread surface 1a to a sipe bottom 8 and protruding toward an opposite sipe inner wall surface, the first protrusion 7 is tapered toward the opposite sipe inner wall surface, a narrow portion 7a is provided between the tread surface 1a and the sipe bottom 8, and a second protrusion 9 protruding toward the opposite sipe inner wall surface is formed between narrow portions 7a of adjacent first protrusions.
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