Tire

A tire comprising:

• a tread configured to come into contact with a road surface;
• and
• a belt radially inward of the tread, wherein
• four circumferential grooves are formed on the tread and aligned in an axial direction such that five land portions are formed in the tread,
• a ratio of the groove width of each of the circumferential grooves to a width of the tread is from 3% to 15%,
• among the four circumferential grooves, a circumferential groove on each outermost side in the axial direction is a shoulder circumferential groove,
• among the five land portions, a land portion on each outermost side in the axial direction is a shoulder land portion, a land portion located at a center in the axial direction is a center land portion, and a land portion located axially between the center land portion and the shoulder land portion is a middle land portion,
• no circumferential groove is formed on the middle land portion,
• the belt includes an inner layer and an outer layer radially outward of the inner layer,
• each end of the outer layer is axially inward of an end of the inner layer,
• a circumferential narrow groove is formed on the shoulder land portion so as to continuously extend in a circumferential direction,
• a groove width of the circumferential narrow groove is smaller than a groove width of the shoulder circumferential groove,
• the circumferential narrow groove is between the shoulder circumferential groove and the end of the outer layer in the axial direction,
• a ratio 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 from 15% to 55%,
• a ratio of the groove width of the circumferential narrow groove to a width of the tread is from 1.5% to 2.5%
• the tread includes a cap portion configured to come into contact with the road surface and a base portion radially inward of the cap portion,
• a loss tangent of the base portion at 30° C. is lower than a loss tangent of the cap portion at 30° C.,
• the base portion is radially inward of the circumferential narrow groove,
• a groove bottom of the circumferential narrow groove is formed by the base portion, and
• a ratio of a groove depth of the circumferential narrow groove to a thickness of the tread is from 80% to 90%.