TIRE

Excellent rolling resistance performance and wet grip performance are exhibited. [0002] Provided is a tire 1 in which a tread portion 2 includes a plurality of circumferential grooves 3. The circumferential grooves 3 include shoulder circumferential grooves 3A and a middle circumferential groove 3B. A groove depth D2 of the middle circumferential groove 3B is less than a groove depth D1 of the shoulder circumferential groove 3A. In a groove bottom 5B of the middle circumferential groove 3B, a circumferential sipe 7 and a circumferential width-increased portion 9 extending inwardly from the circumferential sipe 7 in the tire radial direction, are formed.