Abstract: Provided in a tread portion of a tire are main grooves, lug grooves intersecting the main grooves, and land portions defined by the main grooves. A specific one of the land portions includes, in a ground contact surface, sipes and narrow grooves intersecting the main grooves, the narrow grooves having a depth of 1.50 mm or less. When extending from one side toward another side in the width direction, the sipes and the narrow grooves have different directions extending in the circumferential direction in the central region and have the same direction extending in the circumferential direction in both edge regions on an outer side from the central region in the width direction. The specific one of the land portions includes at least one land portion on the outer side in the width direction.

Abstract: A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe disposed in the land portion. The sipe is formed in a zigzag shape that has an amplitude in a width direction of the sipe while extending in a longitudinal direction of the sipe. A magnitude of the amplitude changes according to a position in a depth direction of the sipe. A depth of a maximum amplitude portion from an opening portion of the sipe in the depth direction of the sipe is located at a position 30% or more of a maximum depth of the sipe. The maximum amplitude portion is a portion where a magnitude of the amplitude is maximum.

Abstract: A pneumatic tire includes circumferential grooves, lug grooves, land portions defined by the circumferential grooves and the lug grooves, and a narrow groove in the land portions that extends in a circumferential direction. At least one of the circumferential grooves that defines the land portions in which the narrow groove is disposed has an amplitude in a width direction while extending in the circumferential direction to be formed in zigzag shape including long and short portions having relatively different lengths. The narrow groove has one or more bent portions where an extension direction changes in the land portions to include a long portion and a short portion having relatively different lengths. The long portion of the narrow groove has an inclination direction in the width direction with respect to the circumferential direction in a direction opposite to the long portion of the at least one of the circumferential grooves.

Abstract: In a tire, width direction edges of lands corresponding to edges of lug grooves include width direction bent portions bent in a circumferential direction. Width direction bent portions closest to a land center portion line and disposed on outer and inner sides in a width direction are outer and inner bent portions, respectively. The lands have a width w1 in the width direction from the outermost side position to the outer bent portion of the lands in the width direction and a width w2 in the width direction from the innermost side position to the inner bent portion of the lands in the width direction, the widths w1, w2 satisfying w2<w1, and a maximum width wb of the lands in the width direction and a width wc between the outer bent portion and the inner bent portion in the width direction satisfy 0.2?(wc/wb)?0.6.

Abstract: In a tire, an outermost circumferential groove is on the outermost side in the width direction, a center land portion and center lug grooves are on an inner side of the outermost circumferential groove in the width direction, the center lug grooves include an end opening to the outermost circumferential groove, a width-direction sipe and a circumferential sipe are on an individual side of both sides in the circumferential direction of a center lug groove of an individual pair of the center lug grooves adjacent in the circumferential direction, the width-direction sipe includes one end opening to the outermost circumferential groove to which the center lug groove opens and the other end terminating within the center land portion, and the circumferential sipe includes one end opening to the center lug groove and the other end terminating near the width-direction sipe or communicating with the width-direction sipe.

Abstract: Provided is a pneumatic tire that can be obtained without requiring complicated design and has improved noise performance. On the inner vehicle-mounting side, the circumferential pitch length of the tire has pitch variation comprising at least three pitch lengths and, if the number of pitches is n and the pitch lengths (Pi) are Pi1, Pi2, Pi3, . . . , Pin, in order from the greatest pitch length, the pitch lengths satisfy the relationships Pi1/Pi2?Pi2/Pi3? . . . ?Pin?1/Pin, and Pi1/Pi2.

Abstract: A pneumatic tire comprises circumferential main grooves extending in the tire circumferential direction and land portions defined by the circumferential main grooves. The land portions are each provided with a plurality of groove units which are sets including a first groove, a second groove, and a third groove. The first groove, the second groove, the third groove are disposed without meeting one another, and radially extend at intervals from each other ranging from 90 degrees to 150 degrees. Additionally, the first groove is a lug groove with the groove width ranging from 1.5 mm to 4.0 mm and has a semi-closed structure, opening to the circumferential main groove or the tire ground contact edge at a first end portion and terminating within the land portion at a second end portion.

Abstract: A pneumatic tire comprises at least four main grooves extending in the tire circumferential direction on the tread surface, circumferential land portions and shoulder land portions partitioned and formed by these main grooves, and designation of a mounting direction with respect to a vehicle, wherein a plurality of lug grooves is formed at intervals in the tire circumferential direction in each of the plurality of circumferential land portions, extending in the tire width direction, communicating with the main groove on the vehicle inner side, not communicating with the main groove on the vehicle outer side, and terminating within the circumferential land portion.

Abstract: A pneumatic tire comprises circumferential main grooves extending in the tire circumferential direction and land portions defined by the circumferential main grooves. The land portions are each provided with a plurality of groove units which are sets including a first groove, a second groove, and a third groove. The first groove, the second groove, the third groove are disposed without meeting one another, and radially extend at intervals from each other ranging from 90 degrees to 150 degrees. Additionally, the first groove is a lug groove with the groove width ranging from 1.5 mm to 4.0 mm and has a semi-closed structure, opening to the circumferential main groove or the tire ground contact edge at a first end portion and terminating within the land portion at a second end portion.

Abstract: A pneumatic tire in which an inner liner including a film mainly made of thermoplastic resin is attached to an inside of the tire via a tie rubber sheet, on an inner side of a carcass layer, and which has a lap-splice portion where end portions of the film in a tire circumferential direction overlap each other in a tire widthwise direction with tie rubber therebetween. A section of the film on a tire cavity side in the lap-splice portion has a portion where the film is thin over part or entirety of the width in the tire widthwise direction before the lap-splice portion, or a film thickness in the lap-splice portion is smaller than a film thickness in a portion other than the lap-splice portion. Thus, the pneumatic tire has no crack developing around the lap-splice portion of an inner liner layer after running, and has excellent durability.

Abstract: A pneumatic tire is provided where, in a tread center portion, there are at least three pitch variations in terms of pitch length in the circumferential direction of the tire, and, taking n as the pitch count, the pitch lengths Pc Pc1, Pc2, Pc3, . . . , Pcn in order from longest to shortest satisfy the relationships Pc1/Pc2?Pc2/Pc3?, . . . , ?Pcn?1/Pcn and Pc1/Pc2>Pcn?1/Pcn.

Abstract: A pneumatic tire comprises at least four main grooves extending in the tire circumferential direction on the tread surface, circumferential land portions and shoulder land portions partitioned and formed by these main grooves, and designation of a mounting direction with respect to a vehicle, wherein a plurality of lug grooves is formed at intervals in the tire circumferential direction in each of the plurality of circumferential land portions, extending in the tire width direction, communicating with the main groove on the vehicle inner side, not communicating with the main groove on the vehicle outer side, and terminating within the circumferential land portion.

Abstract: A pneumatic tire is configured so that half-tread regions on both sides in the widthwise direction of the tire are provided with: a wave-shaped circumferential main groove group including outer circumferential main grooves and an inner circumferential main groove; land sections; and lug grooves, sipes, or lug groove and sipe combinations formed by combining lug grooves and sipes. The lug grooves are configured in such a manner that, in the half-tread region on the first side, wave-shaped crests are connected at both ends of the land section in the widthwise direction of the tire, and in such a manner that, in the half-tread region on the second side, wave-shaped troughs are connected at both ends of the land section in the widthwise direction of the tire.