A tire comprising a tread portion, wherein the tread portion includes a tread rubber forming a ground-contact surface, and a band layer disposed inward of the tread rubber in a tire radial direction, the band layer includes at least one band ply in which a band cord containing a polyester fiber is arranged, the tread rubber contains styrene and is composed of a rubber composition having a glass transition temperature Tg of not lower than -20°C, characterised in that the band cord has a stress σ1 at 2.5% elongation of not less than 0.05 N/tex and not greater than 0.18 N/tex and a stress σ2 at 5.0% elongation of not less than 0.09 N/tex and not greater than 0.33 N/tex, and a styrene amount S in 100 parts by mass of a rubber component of the tread rubber is not greater than 25 parts by mass, wherein each of the stress σ1 at 2.5% elongation and the stress σ2 at 5.0% elongation of the band cord is a value obtained by dividing the force at 2.5% or 5.0% elongation of the cord taken from the tire by the total fineness of the cord, the test method for these stresses σ1 and σ2 being based on "8.6 Test method for load at constant elongation" in JIS-L1017 "Test methods for chemical fibre tire cords", wherein the total fineness of the cord used in this case is calculated for the cord taken from the tire by a method based on b) of "8.3 Fineness based on corrected weight" in JIS-L1017, and wherein the glass transition temperature Tg of the rubber composition is determined by measuring a temperature distribution curve of tanδ under conditions of a frequency of 10 Hz, an initial strain of 10%, an amplitude of ±0.5%, and a temperature increase rate of 2°C/min, wherein a tanδ peak temperature corresponding to the highest tanδ value in the measured temperature distribution curve is regarded as the glass transition temperature Tg, wherein a rubber sample used when the glass transition temperature Tg is measured is taken from the tire after vulcanization such that the longitudinal direction of the sample coincides with the circumferential direction of the tire. the tread portion includes a tread rubber forming a ground-contact surface, and a band layer disposed inward of the tread rubber in a tire radial direction, the band layer includes at least one band ply in which a band cord containing a polyester fiber is arranged, the tread rubber contains styrene and is composed of a rubber composition having a glass transition temperature Tg of not lower than -20°C, characterised in that the band cord has a stress σ1 at 2.5% elongation of not less than 0.05 N/tex and not greater than 0.18 N/tex and a stress σ2 at 5.0% elongation of not less than 0.09 N/tex and not greater than 0.33 N/tex, and a styrene amount S in 100 parts by mass of a rubber component of the tread rubber is not greater than 25 parts by mass, wherein each of the stress σ1 at 2.5% elongation and the stress σ2 at 5.0% elongation of the band cord is a value obtained by dividing the force at 2.5% or 5.0% elongation of the cord taken from the tire by the total fineness of the cord, the test method for these stresses σ1 and σ2 being based on "8.6 Test method for load at constant elongation" in JIS-L1017 "Test methods for chemical fibre tire cords", wherein the total fineness of the cord used in this case is calculated for the cord taken from the tire by a method based on b) of "8.3 Fineness based on corrected weight" in JIS-L1017, and wherein the glass transition temperature Tg of the rubber composition is determined by measuring a temperature distribution curve of tanδ under conditions of a frequency of 10 Hz, an initial strain of 10%, an amplitude of ±0.5%, and a temperature increase rate of 2°C/min, wherein a tanδ peak temperature corresponding to the highest tanδ value in the measured temperature distribution curve is regarded as the glass transition temperature Tg, wherein a rubber sample used when the glass transition temperature Tg is measured is taken from the tire after vulcanization such that the longitudinal direction of the sample coincides with the circumferential direction of the tire.