A tire which comprises a tread portion having a tread surface that comes into contact with a road surface and a circumferential groove that extends in a tire circumferential direction, in a cross section taken along a direction orthogonal to an extension direction of the circumferential groove and along a tire radial direction (trd), a groove bottom of the circumferential groove having an arc portion that is formed in an arc shape, and a center of an arc constituting the arc portion being positioned outside of the groove bottom in the tire radial direction, the tire comprising: a circumferential belt layer located inside of the tread portion and extending in the tire circumferential direction; and a crossing belt layer located outside of the circumferential belt layer in the tire radial direction, wherein a region of the tread portion overlapping with a portion of the circumferential belt layer in the tire radial direction is a central region such that the overlapping portion has a 80% width of the circumferential belt layer in a tread widthwise direction (twd) with a centre thereof positioned at a tire equator line, and a remaining region of the tread portion is a terminal region, wherein the circumferential groove located in the central region is a central circumferential groove, and the circumferential groove located in the terminal region is a terminal circumferential groove, wherein a maximum curvature radius of the arc portion of the central circumferential groove is R1, a minimum curvature radius of the arc portion of the terminal circumferential groove is R2, a maximum depth in the tire radial direction from the tread surface to a groove bottom of the central circumferential groove is D1, a maximum depth in the tire radial direction from the tread surface to a groove bottom of the terminal circumferential groove is D2, and a relationship of R1/D1 ≤ 0.130 and a relationship of R2/D2 > 0.195 are satisfied. a circumferential belt layer located inside of the tread portion and extending in the tire circumferential direction; and a crossing belt layer located outside of the circumferential belt layer in the tire radial direction, wherein a region of the tread portion overlapping with a portion of the circumferential belt layer in the tire radial direction is a central region such that the overlapping portion has a 80% width of the circumferential belt layer in a tread widthwise direction (twd) with a centre thereof positioned at a tire equator line, and a remaining region of the tread portion is a terminal region, wherein the circumferential groove located in the central region is a central circumferential groove, and the circumferential groove located in the terminal region is a terminal circumferential groove, wherein a maximum curvature radius of the arc portion of the central circumferential groove is R1, a minimum curvature radius of the arc portion of the terminal circumferential groove is R2, a maximum depth in the tire radial direction from the tread surface to a groove bottom of the central circumferential groove is D1, a maximum depth in the tire radial direction from the tread surface to a groove bottom of the terminal circumferential groove is D2, and a relationship of R1/D1 ≤ 0.130 and a relationship of R2/D2 > 0.195 are satisfied.