A tire comprising: a tread configured to come into contact with a road surface; and a belt located radially inward of the tread, wherein a plurality of circumferential grooves are formed on the tread so as to be aligned in an axial direction such that at least three land portions are formed in the tread, among the plurality of circumferential grooves, a circumferential groove located on each outermost side in the axial direction is a shoulder circumferential groove, among said at least three land portions, a land portion located on each outermost side in the axial direction is a shoulder land portion, the belt includes an inner layer and an outer layer located radially outward of the inner layer, each end of the outer layer is located axially inward of an end of the inner layer, a circumferential narrow groove is formed on each of the two shoulder land portions so as to continuously extend in a circumferential direction, a groove width of the circumferential narrow groove is smaller than a groove width (w) of the shoulder circumferential groove, the circumferential narrow groove is located between the shoulder circumferential groove and the end of the outer layer in the axial direction, wherein the tread includes a cap portion configured to come into contact with the road surface and a base portion located radially inward of the cap portion, and the base portion is located radially inward of the circumferential narrow groove, characterized in that a ratio (DX/ DY) of a distance in the axial direction from the shoulder circumferential groove to the circumferential narrow groove to a distance in the axial direction from the shoulder circumferential groove to the end of the outer layer is not less than 15% and not greater than 55%, a groove bottom of the circumferential narrow groove is formed by the base portion, and a loss tangent (LTb) of the base portion at 30°C is lower than a loss tangent (LTc) of the cap portion at 30°C, the loss tangent at a temperature of 30°C is measured using a viscoelasticity spectrometer under the following conditions according to the standards of JIS K6394: Initial strain = 10 % Dynamic strain = 2 % Frequency = 10 Hz and Deformation mode = tension. a tread configured to come into contact with a road surface; and a belt located radially inward of the tread, wherein a plurality of circumferential grooves are formed on the tread so as to be aligned in an axial direction such that at least three land portions are formed in the tread, among the plurality of circumferential grooves, a circumferential groove located on each outermost side in the axial direction is a shoulder circumferential groove, among said at least three land portions, a land portion located on each outermost side in the axial direction is a shoulder land portion, the belt includes an inner layer and an outer layer located radially outward of the inner layer, each end of the outer layer is located axially inward of an end of the inner layer, a circumferential narrow groove is formed on each of the two shoulder land portions so as to continuously extend in a circumferential direction, a groove width of the circumferential narrow groove is smaller than a groove width (w) of the shoulder circumferential groove, the circumferential narrow groove is located between the shoulder circumferential groove and the end of the outer layer in the axial direction, wherein the tread includes a cap portion configured to come into contact with the road surface and a base portion located radially inward of the cap portion, and the base portion is located radially inward of the circumferential narrow groove, characterized in that a ratio (DX/ DY) of a distance in the axial direction from the shoulder circumferential groove to the circumferential narrow groove to a distance in the axial direction from the shoulder circumferential groove to the end of the outer layer is not less than 15% and not greater than 55%, a groove bottom of the circumferential narrow groove is formed by the base portion, and a loss tangent (LTb) of the base portion at 30°C is lower than a loss tangent (LTc) of the cap portion at 30°C, the loss tangent at a temperature of 30°C is measured using a viscoelasticity spectrometer under the following conditions according to the standards of JIS K6394: Initial strain = 10 % Dynamic strain = 2 % Frequency = 10 Hz and Deformation mode = tension.