PNEUMATIC TIRE
DRIVE
May 9, 2012
A pneumatic tire including a closed sipe 5 in a land portion 3 formed in a tread surface 1, provided with at least three cuts 4 extending in a radiation direction from an imaginary axis 2 that extends in a depth direction of the land portion 3, and that terminate in the land portion 3. The cuts 4 are provided with a spiral-like twist in the depth direction, centered on the imaginary axis 2, and a twist angle ¸ thereof is not less than 10° and less than 135°. Additionally, a length in the radiation direction of the cuts 4 or a width of the cuts is formed larger at a tread surface 1 side than at a bottom surface side.
Discussion in the ATmosphere