A tire comprising, in a tread plan view: a pair of circumferential grooves formed respectively on opposite sides of a tire equator line and extending in a tire circumferential direction; and a plurality of lug grooves (30, 40) formed on an outer side of at least one circumferential groove of the pair of circumferential grooves in a tire width direction, wherein the plurality of lug grooves (30, 40) include primary inclined grooves and auxiliary inclined grooves alternately formed in the tire circumferential direction, each of the primary inclined grooves does not communicate with the circumferential groove on the tire equator line side and extends beyond a tread edge outward in the tire width direction, each primary inclined groove includes: a first gently inclined portion located on the tire equator line side; and a first steeply inclined portion located on the tread edge side and continuing to the first gently inclined portion, an inclination angle of the first steeply inclined portion relative to the tire circumferential direction is larger than an inclination angle of the first gently inclined portion relative to the tire circumferential direction, each of the auxiliary inclined grooves does not communicate with the circumferential groove on the tire equator line side, and does not reach the tread edge but terminates on the tire equator line side, each auxiliary inclined groove includes: a second steeply inclined portion located on the tire equator line side; and a second gently inclined portion located on the tread edge side relative to the second steeply inclined portion, an inclination angle of the second steeply inclined portion relative to the tire circumferential direction is larger than an inclination angle of the second gently inclined portion relative to the tire circumferential direction, wherein the tread edge is an edge, in the tire width direction, of the portion which comes into contact with the ground, in a state where the load on the tire is equal to the maximum loading condition and the internal pressure of the tire is equal to the standard internal pressure, and the tire being characterized in that between the pair of circumferential grooves, no widthwise groove extending in the tire width direction is formed, and a plurality of hole portions located at predetermined intervals in the tire circumferential direction are formed. a pair of circumferential grooves formed respectively on opposite sides of a tire equator line and extending in a tire circumferential direction; and a plurality of lug grooves (30, 40) formed on an outer side of at least one circumferential groove of the pair of circumferential grooves in a tire width direction, wherein the plurality of lug grooves (30, 40) include primary inclined grooves and auxiliary inclined grooves alternately formed in the tire circumferential direction, each of the primary inclined grooves does not communicate with the circumferential groove on the tire equator line side and extends beyond a tread edge outward in the tire width direction, each primary inclined groove includes: a first gently inclined portion located on the tire equator line side; and a first steeply inclined portion located on the tread edge side and continuing to the first gently inclined portion, an inclination angle of the first steeply inclined portion relative to the tire circumferential direction is larger than an inclination angle of the first gently inclined portion relative to the tire circumferential direction, each of the auxiliary inclined grooves does not communicate with the circumferential groove on the tire equator line side, and does not reach the tread edge but terminates on the tire equator line side, each auxiliary inclined groove includes: a second steeply inclined portion located on the tire equator line side; and a second gently inclined portion located on the tread edge side relative to the second steeply inclined portion, an inclination angle of the second steeply inclined portion relative to the tire circumferential direction is larger than an inclination angle of the second gently inclined portion relative to the tire circumferential direction, wherein the tread edge is an edge, in the tire width direction, of the portion which comes into contact with the ground, in a state where the load on the tire is equal to the maximum loading condition and the internal pressure of the tire is equal to the standard internal pressure, and the tire being characterized in that between the pair of circumferential grooves, no widthwise groove extending in the tire width direction is formed, and a plurality of hole portions located at predetermined intervals in the tire circumferential direction are formed.