A tire set comprising, as a set, a rear tire and a front tire, said front and said rear tires each comprising:
- a crossing groove crossing between tread edges;
- and
- a non-crossing groove adjacent to the crossing groove in a tire circumferential direction, and extending from one tread edge and not reaching an other tread edge,
- wherein the crossing groove has three bend portions, which are a first bend portion to a third bend portion in order from the one tread edge, and has four groove portions, which are a first groove portion, between the one tread edge and the first bend portion, to a fourth groove portion, between the third bend portion and the other tread edge, in order from the one tread edge, the first groove portion to the fourth groove portion being delimited at the first bend portion to the third bend portion,
- the non-crossing groove has a fifth groove portion extending at least in a region between the one tread edge and a position of 45% of a tread half width from a tire equatorial plane toward the one tread edge,
- the first groove portion, the second groove portion, and the fifth groove portion extend toward one side in the tire circumferential direction and the third groove portion and the fourth groove portion extend toward an other side in the tire circumferential direction, in a direction from the one tread edge to the other tread edge,
- a groove group made up of the crossing groove and the non-crossing groove adjacent to the crossing groove in the tire circumferential direction as a set is repeatedly provided in the tire circumferential direction so that adjacent groove groups are symmetric with respect to the tire equatorial plane,
- when, in a tread surface, a region of less than 10% of the tread half width from the tire equatorial plane toward each of the tread edges is referred to as a center region, a region of 10% or more and 45% or less of the tread half width from the tire equatorial plane toward each of the tread edges is referred to as a middle region, and a region of more than 45% of the tread half width from the tire equatorial plane toward each of the tread edges is referred to as a shoulder region,
- the first bend portion is located in the shoulder region nearer the one tread edge,
- the second bend portion is located in the middle region nearer the one tread edge,
- the third bend portion is located in the middle region nearer the other tread edge, and
- respective inclination angles of the second groove portion, the fourth groove portion, and the fifth groove portion with respect to the tire circumferential direction are each larger than an inclination angle of the first groove portion with respect to the tire circumferential direction,
- wherein a rotation direction of said rear tire is a direction from the other side in the tire circumferential direction to the one side in the tire circumferential direction, and
- wherein a rotation direction of said front tire is a direction from the one side in the tire circumferential direction to the other side in the tire circumferential direction.