| abstract |
A studless tire having good performance on ice and high wear resistance is provided. The ratio (E1 / E2) of the complex elastic modulus E1 at 0 ° C. to the complex elastic modulus E2 at 60 ° C. is 1.8 or less, the complex elastic modulus E1 at 0 ° C. is 20 MPa or less, and the amount of oil The tread rubber is 15 parts by mass or less with respect to 100 parts by mass of the rubber component, the centerline average roughness Ra of the worn surface of the tread rubber after traveling 3000 km on the asphalt road surface is 12 to 40 μm, and The studless tire is characterized in that a ratio (Rz / Ra) of ten-point average roughness Rz and centerline average roughness Ra is 15 or more. [Selection figure] None |