A pneumatic tire rotatable about a rotation axis upon the pneumatic tire being mounted on a rim, the pneumatic tire comprising:
- a tread portion comprising grooves formed into a predetermined pattern design;
- a sidewall portion adjacent to a boundary portion of the tread portion in a tire lateral direction and comprising a surface on which a maximum tire width position is located;
- and
- a serration portion comprising a plurality of ridges shaped into lines in a plane orthogonal to the rotation axis, the plurality of ridges each comprising an end portion, and the plurality of ridges being arranged at intervals in a tire circumferential direction on the surface of the sidewall portion;
- the serration portion comprising first ridge groups and second ridge groups, the first ridge groups each comprising a plurality of first ridges arranged adjacent to each other in the tire circumferential direction, the plurality of first ridges comprising the end portions of which distances from the rotation axis gradually change, the second ridge groups each comprising a plurality of second ridges arranged adjacent to each other in the tire circumferential direction, and the plurality of second ridges comprising the end portions of which distances from the rotation axis gradually change;
- the first ridge groups and the second ridge groups being adjacent to each other in the tire circumferential direction;
- the end portion of a first ridge of the plurality of first ridges located farthest on a first side in the tire circumferential direction in each of the first ridge groups being located on one of an inside and an outside of the maximum tire width position in a tire radial direction, and the end portion of a first ridge of the plurality of first ridges located farthest on a second side in the tire circumferential direction being located on the other of the inside and the outside of the maximum tire width position in the tire radial direction;
- and
- the end portion of a second ridge of the plurality of second ridges located farthest on the first side in the tire circumferential direction in each of the second ridge groups being located on one of the inside and the outside of the maximum tire width position in the tire radial direction, and the end portion of a second ridge of the plurality of second ridges located farthest on the second side in the tire circumferential direction being located on the other of the inside and the outside of the maximum tire width position in the tire radial direction;
- wherein the end portions of the first ridges on the first and second sides of the maximum tire width position and the end portions of the second ridges on the first and second sides of the maximum tire width position are each discrete and disconnected from any other ridges;
- and
- the end portions of the first ridges and the end portions of the second ridges define an imaginary line arranged in a zigzag manner with the maximum tire width position as a center of amplitude.