Patent ID: 8875760

Claim:
A pneumatic tire provided with a plurality of vertical grooves extending in a tire circumferential direction in a tread surface and a sipe extending in a tire width direction in a land portion partitioned by the vertical grooves, wherein, in the sipe, protrusions are formed on a first sipe wall surface of mutually opposing sipe wall surfaces and recesses that engage with the protrusions are formed on a second sipe wall surface; the protrusions have a height in a direction perpendicular to the sipe wall surface, a height of protrusions positioned on an upper portion in a depth direction of the sipe is greater than a height of protrusions positioned on a lower portion, the protrusions comprise at least one of a hemispherical shape, a cylindrical shape with ends thereof having a hemispherical shape, or a cylindrical shape with ends thereof having a truncated conical shape, and a diameter of a base of the protrusions on the upper portion is substantially equal to a diameter of a base of the protrusions on the lower portion.