TIRE

An object of the present invention is to improve propulsion performance on a snow-covered road surface, and provided is a tire with a tread portion having a groove, wherein the cap rubber layer forming the tread portion contains 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 its rubber component, and 60 parts by mass or more of a filler with respect to 100 parts by mass of the rubber component, and is formed from a rubber composition having a loss tangent 10°Ctan δ measured under the conditions of temperature of 10°C, frequency of 10 Hz, initial strain of 5%, and dynamic strain rate of 1 % and in deformation mode; tensile of less than 0.28, and a glass transition temperature Tg (°C) of -40°C or lower; and the glass transition temperature Tg (°C) and the depth G(mm) of the groove satisfy Tg ≤ -0.5 × G - 35.