There is provided a studless tire that is excellent especially in performance
on a snow or ice road. A studless tire, wherein non-metal staple fibers having
an average fiber diameter of 1 to 100 m and an average length of 0.1 to
5 mm are dispersed in a diene rubber in such a way that the non-metal staple fibers
are oriented in a thickness direction of a tread, a complex elastic modulus E1
in the thickness direction of the tread and an elastic module E2 in a circumferential
direction of the tire measured at 25 C. satisfy the equation 1.1E1/E24,
and hardness of the tread rubber measured at -10 C. is 45 to 75 degrees.