Abstract: A tread portion of a pneumatic tire includes a pair of first main grooves extending in a tire circumferential direction formed at a position on either outer side in the tire lateral direction of a first land portion including a tire equatorial plane; a pair of second main grooves extending in the tire circumferential direction formed at a position outward from the first main grooves in the tire lateral direction; and first lug grooves formed in a second land portion between the first main grooves and the second main grooves, the first lug grooves opening to one of the first main grooves at one end and opening to one of the second main grooves at an other end. The first lug grooves have a groove width of 2 mm or greater and have the same inclination direction in the tire lateral direction with respect to the tire circumferential direction.

Abstract: In a pneumatic tire, a land portion includes a chamfered portion formed on an edge portion of the land portion on a ground contact edge side, and a lug groove and a narrow groove disposed correspondingly to the chamfered portion. The chamfered portion is formed on the edge portion on a ground contact edge side, and has a chamfered width that increases toward a circumferential direction in the road contact surface of the land portion. The lug groove terminates in the land portion on one end, and is opened to a central portion of the chamfered portion in a longitudinal direction on the other end. The narrow groove is opened to an edge portion of the land portion on an equatorial plane side on one end, and terminates in the vicinity of a maximum width position of the chamfered portion on the other end.

Abstract: In a pneumatic tire, an inner second land portion includes chamfered portions and lug grooves. The chamfered portions are on an edge portion on a tire ground contact edge side of the inner second land portion and widen chamfer widths on a road contact surface of the inner second land portion in a tire circumferential direction. The lug grooves terminate in the inner second land portion at one end portion and open to central portions in a longitudinal direction of the chamfered portions at another end portion. An outer second land portion and an outer shoulder land portion include closed lug grooves terminating in the outer second land portion at one end portion. The closed lug grooves extend in the tire width direction and penetrate a circumferential narrow groove. The closed lug grooves terminate in a ground contact surface of the outer shoulder land portion at another end portion.

Abstract: A pneumatic tire includes first and second main grooves, and first sipes and auxiliary grooves on second land portions between the first and second main grooves, the auxiliary grooves opening to the second main grooves and terminating in the second land portions. The auxiliary grooves bend at a bend point and include a first portion extending from an opening end to the bend point, and a second portion extending from the bend point to a terminating end. A groove width of the first portion gradually reduces from the opening end to the bend point. Second sipes have an end that opens to each of the second main grooves and another end that opens to each of the terminating ends. Third sipes have an end that opens to the first main grooves and another end that opens to the first portions. The sipes are parallel to each other.

Abstract: In a pneumatic tire, a land portion includes a chamfered portion formed on an edge portion of the land portion on a ground contact edge side, and a lug groove and a narrow groove disposed correspondingly to the chamfered portion. The chamfered portion is formed on the edge portion on a ground contact edge side, and has a chamfered width that increases toward a circumferential direction in the road contact surface of the land portion. The lug groove terminates in the land portion on one end, and is opened to a central portion of the chamfered portion in a longitudinal direction on the other end. The narrow groove is opened to an edge portion of the land portion on an equatorial plane side on one end, and terminates in the vicinity of a maximum width position of the chamfered portion on the other end.

Abstract: A pneumatic tire includes circumferential main and narrow grooves, shoulder and second land portions, and closed lug grooves. The circumferential main groove is in a region outer side in a width direction demarcated by an equatorial plane. The circumferential narrow groove is outward of the circumferential main groove in a width direction. The shoulder and second land portions are defined by the circumferential main and narrow grooves. The closed lug grooves extend in the width direction and penetrate the circumferential narrow groove. The closed lug grooves have inner terminating end portions in the width direction inside the second land portion and have outer terminating end portions inside the shoulder land portion. An extension length L1_min in the width direction of the shortest first closed lug grooves and an extension length L1_max in the width direction of the longest second closed lug grooves have a relationship 1.10?L1_max/L1_min?3.00.

Abstract: In a pneumatic tire, an inner second land portion includes chamfered portions and lug grooves. The chamfered portions are on an edge portion on a tire ground contact edge side of the inner second land portion and widen chamfer widths on a road contact surface of the inner second land portion in a tire circumferential direction. The lug grooves terminate in the inner second land portion at one end portion and open to central portions in a longitudinal direction of the chamfered portions at another end portion. An outer second land portion and an outer shoulder land portion include closed lug grooves terminating in the outer second land portion at one end portion. The closed lug grooves extend in the tire width direction and penetrate a circumferential narrow groove. The closed lug grooves terminate in a ground contact surface of the outer shoulder land portion at another end portion.

Abstract: A pneumatic tire includes first and second main grooves, and first sipes and auxiliary grooves on second land portions between the first and second main grooves, the auxiliary grooves opening to the second main grooves and terminating in the second land portions. The auxiliary grooves bend at a bend point and include a first portion extending from an opening end to the bend point, and a second portion extending from the bend point to a terminating end. A groove width of the first portion gradually reduces from the opening end to the bend point. Second sipes have an end that opens to each of the second main grooves and another end that opens to each of the terminating ends. Third sipes have an end that opens to the first main grooves and another end that opens to the first portions. The sipes are parallel to each other.

Abstract: A pneumatic tire includes first main grooves formed on outer sides, in the lateral direction, of a first land including an equatorial plane and extending in the circumferential direction; second main grooves outside, in the lateral direction, of the first main grooves and extending in the circumferential direction; auxiliary grooves formed on second lands between the first main grooves and the second main grooves, opening to the second main grooves, and terminating in the second lands; and first sipes inclined identically to the auxiliary grooves and crossing the second lands. The auxiliary grooves are formed into a shape bending at a bend point, and include a first portion extending from an opening end to the bend point, and a second portion extending from the bend point to a terminating end. A groove width of the first portion gradually reduces from the opening end to the bend point.

Abstract: A tread portion of a pneumatic tire includes a pair of first main grooves extending in a tire circumferential direction formed at a position on either outer side in the tire lateral direction of a first land portion including a tire equatorial plane; a pair of second main grooves extending in the tire circumferential direction formed at a position outward from the first main grooves in the tire lateral direction; and first lug grooves formed in a second land portion between the first main grooves and the second main grooves, the first lug grooves opening to one of the first main grooves at one end and opening to one of the second main grooves at an other end. The first lug grooves have a groove width of 2 mm or greater and have the same inclination direction in the tire lateral direction with respect to the tire circumferential direction.