Tire

Abstract

A tire having a tread portion, which can suppress deterioration in braking performance of tires on an icy road surface after repeated running; and the cap rubber layer forming the tread portion is formed from a rubber composition containing 40 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber (SBR) having a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, containing silica and carbon black together with the rubber component, and having the loss tangent 30° C. tan δ of less than 0.25 measured under the conditions of temperature of 30° C., frequency of 10 Hz, initial strain of 5%, dynamic strain rate of 1%, and deformation mode: tensile; in the rubber composition, the carbon black content is more than 15 parts by mass with respect to 100 parts by mass of the rubber component, and the ratio of the silica content to the carbon black content is 1 or more; and the thickness of the tread portion is 15 mm or less.

Dependencies are inferred from the claim text.