Abstract: A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction in a tread surface of a tread portion, wherein when the circumferential main groove is segmented into an outer side in a tire radial direction and an inner side in the tire radial direction by drawing an imaginary segment line parallel with a straight line connecting each of groove opening edges at a position of ½ of a groove depth in a meridian cross-section, a cross-sectional area SU on the outer side in the tire radial direction and a cross-sectional area SD on the inner side in the tire radial direction satisfy the relationship 0.15?SD/SU?0.60.

Abstract: A tire according to the present disclosure is a tire including, in a tread surface, a tread land portion partitioned by a partitioning groove or by the partitioning groove and a tread edge. The tread land portion includes a sipe extending from a surface of the tread land portion inwardly in a tire radial direction. The sipe includes a widened portion with a larger sipe width than a position adjacent in a sipe longitudinal direction. The cross-sectional area of the widened portion in cross section perpendicular to the tire radial direction is larger on inside than on outside in the tire radial direction.

Abstract: A tire has a tread portion bound with an intended tire rotational direction. The tread portion includes a first tread edge and a second tread edge. The tread portion is provided with first oblique grooves extending obliquely toward a heel side in the tire rotational direction from the first tread edge toward a tire equator side, second oblique grooves extending obliquely toward the heel side from the second tread edge toward the tire equator side, and first circumferential grooves each connecting a respective pair of the first oblique grooves adjacent to each other in a tire circumferential direction. The first oblique grooves have the tire equator side end portions intersecting with the second oblique grooves. The second oblique grooves have the tire equator side end portions intersecting with the first oblique grooves. The first circumferential grooves have groove widths each increasing toward the heel side in the tire rotational direction.

Abstract: A circumferential narrow main groove extending in a circumferential direction in a tread of a pneumatic tire. The circumferential narrow main groove includes a narrow portion opening to a road contact surface of the tread and a widened portion having a wider groove width than the narrow portion. The widened portion is at a groove bottom. A groove width ratio (W2/W1) of a maximum groove width W2 of the widened portion to a groove width W1 of the narrow groove portion is in a range 1.5?(W2/W1)?4.0, and a cross-sectional area ratio (A2/A1) of a groove bottom-side cross-sectional area A2 to a groove opening-side cross-sectional area A1 in a meridian cross-section is within a range 1.2?(A2/A1)?4.0 when the circumferential narrow main groove is divided into two parts at 50% of a maximum groove depth of the circumferential narrow main groove. The cross-sectional area ratio changes along the circumferential direction.

Abstract: A tread for a heavy truck tire is provided that has a bottom surface (14), a shoulder rib (16), and a sacrificial rib (20) located outboard from the shoulder rib (16) in a width direction. A decoupling void (30) is located between the shoulder rib (16) and the sacrificial rib (20). First decoupling void sipes (32), second decoupling void sipes (100) and third decoupling void sipes (104) are in the shoulder rib (16), and one second decoupling void sipe (100) is between one first decoupling void sipe (32) and one third decoupling void sipe (104). The first and third decoupling void sipes (32, 104) are closer to the bottom surface (14) than is the decoupling void (30) in the thickness direction. The second decoupling void sipe (100) is not closer to the bottom surface (14) than is the decoupling void (30) to the bottom surface (14) in the thickness direction.

Abstract: A pneumatic tire includes circumferential grooves aligned in a lateral direction and extending in a circumferential direction, lateral grooves aligned in the circumferential direction and extending to cross the circumferential direction, communicating at ends with the circumferential grooves and defining a block-shaped land portion between the circumferential grooves, two narrow grooves aligned in the lateral direction and extending in the circumferential direction, communicating at ends with a lateral groove and dividing the land portion defined by each of the circumferential grooves and each of the lateral grooves into small land portions, the narrow grooves having a smaller groove width than the circumferential grooves and being formed with a bent portion in an intermediate portion, the bent portion being disposed inward in the lateral direction, and bend points of the bent portions being disposed at positions offset from one another in the circumferential direction.

Abstract: A non-pneumatic tire includes a rim part in which an insertion groove is formed and being connected with an axle; a tread part formed in a shape of surrounding an outer side of the tire in a circumferential direction thereof and being in contact with the ground; a spoke part formed between the rim part and the tread part and provided with upper arch bodies and lower arch bodies of an arch shape to absorb impacts transmitted from the ground to the tread part; a structural reinforcement part inserted into the inside of the tread part to perform load support and stress distribution of the spoke part; a conductive structure part formed between an outer surface of the rim part and an inner surface of the tread part, and having fiber plated using a metal salt.

Abstract: A tread (12) for a heavy truck tire is provided that has a bottom surface (14), a shoulder rib (16), and a sacrificial rib (20) located outboard from the shoulder rib (16) in a width direction. A decoupling void (30) is located between the shoulder rib (16) and the sacrificial rib (20). A decoupling void sipe (32) is in the shoulder rib (16) and opens at the shoulder rib upper surface (18) and at the decoupling void (30). The decoupling void sipe (32) extends in the thickness direction and is closer to the bottom surface (14) than the decoupling void (30) in the thickness direction.

Abstract: A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.

Abstract: Pneumatic vehicle tire having sidewalls and having at least one hatching area (1) or a hatched area element on at least one sidewall, wherein the hatching area (1) or the area element has a multiplicity of hatching ribs (2, 2?, 2?) running next to one another and having two lateral flanks (3a, 3?a, 3?a, 3b, 3?b, 3?b). The one lateral flank (3a, 3?a, 3?a) of the hatching ribs (2, 2?, 2?) has a surface finish which differs from that on the other lateral flank (3b, 3?b, 3?b) of the hatching ribs (2, 2?, 2?).

Abstract: In a tire, a main groove has a bend where the groove wall angle relative to the tread surface normal line changes in a meridian cross-section. In first and second blocks adjacent in a width direction with the main groove therebetween, an angle between a line extended from a ridge line formed by a bend of a first block side groove wall and a line extended from a lug groove wall defining the first block is larger than an angle between a line extended from the ridge line formed by a bend of the second block side groove wall and a line extended from a lug groove wall defining the second block, and an angle of the first block side groove wall to the tread surface normal line is smaller than an angle of the second block side groove wall to the tread surface normal line.

Abstract: A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction and a land portion defined by the circumferential main groove. The circumferential main groove includes a groove opening portion and a groove bottom portion each having a zigzag shape or a wave-like shape with an amplitude in a tire width direction. An outer maximum amplitude position of an outer edge portion in the groove opening portion is disposed to be offset in a tire circumferential direction with respect to an outer maximum amplitude position of an outer edge portion of the corresponding groove bottom portion.

Abstract: A tire includes a pair of shoulder main grooves and one or more center main grooves extending in a tire circumferential direction and four or more rows of land portions defined by the pair of shoulder main grooves and the one or more center main grooves. Each of the pair of shoulder main grooves includes a groove opening portion having a wave-like shape with an amplitude in a tire width direction. Each of the pair of shoulder main grooves includes a groove bottom portion having a zigzag shape with an amplitude in the tire width direction. The groove opening portion in each of the pair of shoulder main grooves has an amplitude A1_sh having a relationship A1_sh<A2_sh with respect to an amplitude A2_sh of the groove bottom portion.

Abstract: A tread pattern of a pneumatic tire includes three or more circumferential main grooves extending in a tire circumferential direction, a plurality of lug grooves provided in a land portion defined by two circumferential main grooves, and a sipe provided between adjacent lug grooves. The sipe is a composite sipe having a two-dimensional portion and a three-dimensional portion. Among open ends on both sides of the lug groove, an open end on an identical side to an end portion of the sipe at which the two-dimensional portion is provided is provided with a raised bottom portion.

Abstract: A utility vehicle tire having a tread with at least two circumferential channels (3), which are formed to a profile depth (T) and which separate central profile positives (1) and shoulder-side profile positives (2) from one another, the circumferential channels (3) having channel flanks (5a, 5b) toward the central profile positives (1) and the shoulder-side profile positives (2) having shoulder flanks (6) running toward the side wall. The channels have depressions delimited by a curved surface.

Abstract: In a pneumatic tire, a plurality of lands include a first land, the first land comprises a plurality of circumferential grooves that extend in a tire circumferential direction and that are arrayed in a tire axial direction, the plurality of circumferential grooves are respectively arranged at portions in the tire circumferential direction of the first land, the plurality of circumferential grooves include a first circumferential groove which is arranged in inwardmost fashion in the tire axial direction, and a second circumferential groove which is arranged in outwardmost fashion in the tire axial direction, and as viewed in a tire meridional section, an inner space area of the first circumferential groove is greater than an inner space area of the second circumferential groove.

Abstract: A pneumatic tire includes: a tire inner surface rubber layer constituting a tire inner surface; and an electrically conductive member, at least a part of the electrically conductive member being disposed on an inner cavity side of the tire inner surface rubber layer. The electrically conductive member includes a knitted fabric including a yarn, at least a part of the yarn having electrical conductivity, the knitted fabric having stretchability. The electrically conductive member is electrically connected to an electrical device provided in the tire. The electrically conductive member is disposed extending along the tire inner surface in a tire radial direction, and a direction in which the electrically conductive member extends aligns with a direction in which the knitted fabric has stretchability. The knitted fabric is configured by mixing a yarn having electrical conductivity and a yarn having non-electrical conductivity.

Abstract: A pneumatic tire includes a block group including shoulder blocks adjacent to each other with a shoulder lug groove therebetween and side blocks adjacent to each other with a side groove positioned on an extension of a shoulder lug groove between the shoulder blocks. Contour lines of side surfaces of the shoulder blocks on the outer side in the tire width direction and contour lines of the top surfaces of the side blocks extend on identical straight lines. Contour lines of the top surfaces of the side blocks, contour lines on a side away from the side groove between the side blocks, and contour lines of the narrow grooves formed on the side blocks each include straight portions extending along the tire radial direction on the side of the shoulder blocks and inclined portions extending in a converging manner toward the side groove between the side blocks.

Abstract: In a pneumatic tire, a tread portion includes a main groove extending in a circumferential direction, and land portions defined by the main groove. A center region is a region where a center land portion included in the land portions is closest to a tire equatorial plane. Shoulder regions are each a region between a position corresponding to 85% of a width of the belt layer in a lateral direction and an end portion of the belt layer in the lateral direction, and intermediate regions are each a region between the center region and a corresponding one of the shoulder regions. A relationship among a tire average thickness Gc in the center region, a tire average thickness Gsh in the shoulder regions, and a tire average thickness Gm in the intermediate regions is within a range of 1.05?(Gc/Gsh)?1.35 and satisfies Gc?Gm>Gsh.

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.