Studless tyre

摘要

A studless tyre that is excellent especially in performance on a snow or ice covered road, wherein non-metal staple fibres having an average fibre diameter of 1 to 100 mu 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 fibres 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 tyre measured at 25 DEG C satisfy the equation 1.1≤E1/E2≤4, and hardness of the tread rubber measured at -10C is 45 to 75 degrees.