Abstract: A pneumatic tire is provided with a tread pattern of left-right asymmetry having an outboard tread edge and an inboard tread edge, and a cap tread rubber having a hardness of from 60 to 75 degrees. An outboard crown land zone defined between middle and outboard main grooves is provided with a circumferentially extending crown sub groove and a crown narrow groove and outboard crown lateral grooves so as to form one row of central crown blocks having an axial width W1, one row of outboard crown blocks having an axial width W2, and one circumferentially extending crown narrow rib having an axial width W3, wherein the axial widths satisfy W1>=W2>=W3.

Abstract: A pneumatic tire is provided including a multiplicity of land portions 3A, 3B, 3C, 3D, and 3E formed by main grooves 2 extending linearly in the tire width direction partitioning the tread surface 1, and having a designated mounting direction on a vehicle. Among the multiplicity of land portions 3A, 3B, 3C, 3D, and 3E, lug grooves are not provided in a ground contact region R of the land portions 3A and 3E positioned on both shoulder sides. Lug grooves 4 inclining in the tire circumferential direction that have terminating parts in the land portions and opening to the main groove 2 on the vehicle inner side are formed at specified intervals in the tire circumferential direction in the land portions 3B and 3D inwardly adjacent to the land portions on both shoulder sides.

Abstract: A pneumatic tire including five land portions Q1, Q2, Q3, Q4, Q5 in a tread surface 1 by providing four main grooves G1, G2, G3, and G4 in a ground contact region R of the tread surface 1, wherein positions and groove widths of the main grooves G1, G2, G3, and G4 are specified together with only the land portion Q1 positioned outermost on a vehicle outer side when mounted on a vehicle being formed into a block row, and the other land portions Q2, Q3, Q4, and Q5 being formed into ribs, and a groove area proportion of the tread surface 1 is larger on a vehicle inner side than the vehicle outer side with a tire equator CL and center lines of the land portions Q2, Q3, Q4 as boundaries.

Abstract: To enhance uneven wear resistance with achieving higher levels of dry grip performance and wet performance, a tread surface 2 is provided with one circumferential main groove 3 in an outer region 2o thereof directed outward of a vehicle and with first and second circumferential main grooves 4 and 5 in an inner region 2i thereof directed inward of the vehicle, a central region Rc between the circumferential main grooves 3 and 4 is formed into a rib 10 extending continuously in the circumferential direction, an outer shoulder region Ro between the circumferential main groove 3 and TEo is formed into a row of outer blocks 12 defined by inclined main grooves 6, and the outer blocks 12 are provided with inclined sub-grooves 13 having an inclination direction different from that of the inclined main grooves 6, thereby dividing each of the outer blocks 12 into a first block portion 12A on a tire equator side and a second block portion 12B on a ground contact edge side.

Abstract: A tire tread intended to be fitted on heavy vehicles, comprising a plurality of elements in relief (30), this tread being divided in the axial direction into three parts, a central part (33) and axially on either side a first edge (31) and a second edge (32), the first and the second edge parts comprising elements in relief (30) arranged at a pitch Pe corresponding to the average circumference of the edge in question divided by the number of elements in relief on the edge in question, the elements in relief of each edge part having a line of leading ridges and a line of trailing ridges.

Abstract: The tread band of a tyre has two circumferential portions, a central one and an inner intermediate one, respectively, that are subdivided into centre and intermediate blocks respectively; an inner-shoulder circumferential portion has first and second inner-shoulder cuts, axially offset from each other and distributed in an alternated sequence, to confine a continuous inner-shoulder rest surface with an undulated course; and an outer intermediate circumferential portion has first and second intermediate cuts, and an outer-shoulder circumferential portion has first and second outer-shoulder cuts. The first and second intermediate cuts and the outer-shoulder cuts, respectively, mutually converge at an angle of about 20° and are axially offset from each other and circumferentially distributed in an alternated sequence, to delimit continuous rest surfaces, an intermediate and outer-shoulder surface respectively, with an undulated course.

Abstract: A pneumatic tire 10 in which a plurality of circumferential main grooves 11 that extend in the tire circumferential direction are formed in a tread surface portion, and a plurality of land portion rows 14 are partitioned by the circumferential main grooves 11, in which in at least one of the plurality of the land portion rows 14 a circumferential auxiliary groove 15 extending in the tire circumferential direction and having a narrower width and shallower depth than those of the circumferential main grooves 11 is formed in a position avoiding the tire centerline CL, and among both side faces 15a and 15b defining the circumferential auxiliary groove 15, one side face on the tire centerline side extends along the normal direction of the tread surface portion or is inclined to the tire centerline side by 5° or less with respect to the normal direction, and the other side face on the side opposite to the tire centerline side is inclined to the side opposite to the tire centerline side by 10° to 30° with respect to

Abstract: A pneumatic radial tire has a carcass and a tread. The carcass has at least one carcass reinforcing ply and opposing bead portions. Each bead portion has a bead core and a bead apex radially. The apexes in each bead portion having the same radial height (HA), as measured from a bead base line (B). The tire has a bead reinforcing ply comprising aramid fiber reinforcing cords located in only one bead portion of the tire, with the bead reinforcing ply being adjacent to the carcass reinforcing ply.

Abstract: Provided is a pneumatic tire in which improvement is achieved in a wet performance and reduction in vehicle exterior noise while ensuring a dry performance.

Abstract: A pneumatic tire comprises a tread portion provided with annular regions each provided with axial grooves each extending from one of the axial edges of the annular region, wherein each axial groove is defined as having a groove width of from 2.0 to 6.0 mm and an axial length of not less than 40% of the axial width of the annular region. The annular regions are different from each other with respect to the number Nj of the axial grooves therein, and the greatest common divisor of the different numbers Nj of the grooved annular regions is in a range of from 10 to 40.

Abstract: Provided is a low profile pneumatic tire for an SUV, which is capable of having its enhanced rut performance with its dry and wet performances being reconciled with each other. The pneumatic tire according to the present invention has a nominal width of not less than 255, an outside diameter of not less than 720 mm, and an aspect ratio of not more than 55%. The pneumatic tire has a designated direction of sides thereof for mounting the tire on a vehicle. In its tread portion, the pneumatic tire includes five main grooves extending in the tire's circumferential direction, and six land portions defined by the five main grooves.

Abstract: It is a subject to improve wet performances and noise performances while restricting degradations in dry performances, and for solving this subject, the pneumatic tire is comprised of a tread grounding surface that is partitioned into four to five regions by three to four main grooves that extend successively in the tire circumferential direction. The main grooves are comprised of one large width main groove which groove width comprises 4 to 20% of a tread grounding width and which is apart from the tire equator by a distance corresponding to 5 to 30% of the tread grounding width further to one grounding end side, and small width main grooves that are disposed between the large width main groove and the other grounding end and which groove width is larger than 2.0 mm but smaller than that of the large width main groove. Both groove side edges of the large width main groove extends in a successive and linear manner in the tire circumferential direction without being interrupted.

Abstract: The tread of a multipurpose tire includes a central region and first and second shoulder regions. Circumferential grooves separate the central and shoulder regions. The central region includes first and second rows of blocks. The first and second rows are arranged between an equatorial plane of the tire and either of the circumferential grooves. The first row is separated from the second row by first and second grooves extending in first and second oblique directions relative to the equatorial plane. The first oblique direction is substantially perpendicular to the second oblique direction. Each first groove is connected to two second grooves at essentially T-shaped junctions. At least two blocks of the first row are separated from each other by a third groove substantially parallel to the second oblique direction. The third groove is connected to a first groove at an end of the first groove nearest the equatorial plane.

Abstract: A tire for a vehicle wheel includes a carcass structure, a belt structure, and a tread band. The tread band pattern includes a central zone and two axially-opposite shoulder zones. The central zone is delimited between axially-inner circumferential grooves and includes at least two intermediate circumferential grooves and a plurality of first transverse recesses inclined relative to a circumferential direction of the tire. The first transverse recesses are connected to at least one of the intermediate circumferential grooves. The shoulder zones are each delimited between axially-inner and axially-outer circumferential grooves. The shoulder zones include a plurality of second transverse recesses inclined relative to the circumferential direction. The at least one of the intermediate circumferential grooves includes a substantially V-shaped cross-section.

Abstract: A vehicle tire having a non-uniformly profiled tread with respect to its center, with a circumferential extending superwide groove having a width of at least 30 mm provided in one half of the tread and two further circumferential grooves which are narrower in comparison thereto and which have at most a width of 15 mm being provided in the other tread half.

Abstract: A vehicle tire is described having at least one carcass ply extending between bead regions, a tread region (1) and a belt arrangement (3) disposed between the carcass and the tread as well as a tread profile provided in the tread region having at least one overwide circumferential groove (2) disposed in particular away from the middle and on the inner side of the tire, with the tire region disposed beneath the overwide circumferential groove, which has in particular a width of more than 30 mm, being formed with additional localised reinforcement in the axial direction.

Abstract: Tread profile of a snow tire for a vehicle in which at least two vehicle wheels are rotatably mountable outside of a longitudinal vehicle axis. The tread profile includes a plurality of profile block rows aligned in a circumferential direction and distributed in an axial direction from a first tire shoulder adapted to be positioned toward an outside of the vehicle in an operational state of the tire on the vehicle to a second tire shoulder adapted to be positioned toward an inside of the vehicle in an operational state of the tire on the vehicle.

Abstract: A pneumatic tire. A central circumferential main groove is disposed to extend along a tire circumferential direction, along a ground contact center line of tread of the pneumatic tire. Inboard side circumferential main grooves and inboard side lateral main grooves, which are continuous with the central circumferential main groove, are provided at an inboard side of the ground contact center line. Outboard side lateral main grooves, which are continuous with the central circumferential main groove, and outboard side slanted longitudinal main grooves, which are continuous with the outboard side lateral main grooves, are disposed at an outboard side of the ground contact center line. Thus, irregular wear of land portions is continuously suppressed and controlling stability is improved. Moreover, water at the ground contact center line, which water is difficult to drain, can be efficiently drained from the ground contact area due to less water resistance.

Abstract: A pneumatic tire 1 has a non-symmetric pattern in which a land ratio Lo of an outer tread surface portion To facing towards outside of a vehicle from a tire equator C is set to be larger than a land ratio Li of an inner tread surface pattern Ti facing towards inside of the vehicle from the tire equator C; concave grooves 9 extending substantially in a circumferential direction of the tire are formed in an outer tire side region Yo that is located between a grounding end Eo of the outer tread surface portion To and a maximum width position M of the tire facing towards outside of the vehicle.

Abstract: A vehicle tire includes a tread provided with a tread pattern, which is made up of circumferentially arranged design units having a plurality of pitch lengths Pi (i=l to j) including a minimum pitch length Pl and a maximum pitch length Pj. Each of the design units has at least one groove with side walls each having an inclination angle &agr;i in a cross section parallel to the tire equator, and the inclination angle &agr;1 in the design unit having the minimum pitch length P1 is less than the inclination angle &agr;j in the design unit having the maximum pitch length Pj, whereby the rigidity difference between the design units having different pitch lengths is decreased. Preferably, the angle &agr;i in a design unit having a pitch length Pi is not more than the angle &agr;i+1 in a design unit having the next longer pitch length Pi+1.

Abstract: A tire for vehicle wheels provided with a tread pattern includes at least one continuous central circumferential groove straddling an equatorial plane of the tire, at least two continuous lateral circumferential grooves having median planes substantially parallel to the equatorial plane of the tire, and a plurality of transverse grooves. These grooves delimit at least four circumferential rows of blocks, two central rows and two shoulder rows. Each block of the central rows is defined by a plurality of sides and at least four vertices, a pair of front vertices and a pair of rear vertices, in relation to a predetermined running direction of the tire. The blocks of the central rows include a first transverse notch having a first terminal end inside a respective block of the central rows and a first starting end communicating with the at least one central circumferential groove.

Abstract: A pneumatic tire having improved wet traction has two annular aquachannels. The tire has a wide, substantially square footprint, a distinctive tread pattern, and a new tread compound, and exhibits good QGL wet traction in addition to excellent hydroplaning properties. The tire also has good handling and wear properties.

Abstract: Vehicular pneumatic tire having an asymmetric tread formed in relation to a circumference of a running surface and process of making vehicular pneumatic tire. The vehicular pneumatic tire includes an outside region that includes an outside shoulder block row and an outside circumferential groove, an inside region that includes an inside shoulder block row and an inside circumferential groove, and a center region that is laterally delimited by the outside circumferential groove and the inside circumferential groove. A plurality of transverse grooves are arranged within the inside shoulder block row, and the plurality of transverse grooves further are arranged to extend into the center region. No more than about one-half of the plurality of transverse grooves are arranged to at least nearly entirely traverse the center region and are oriented to form an angle to a circumferential equator line of no more than approximately 30° over at least one-third of their longitudinal extensions.

Abstract: A pneumatic tire has a block pattern of a tread defined by a plurality of circumferential grooves extending in a circumferential direction of the tread and a plurality of lateral grooves each extending across the circumferential grooves and tread ends, wherein specified chamfered face, sipe or fine groove is formed in each block of all block rows to improve a self-aligning torque in the high-speed running of a vehicle.

Abstract: Disclosed is a pneumatic tire capable of effectively making even a contact pressure of land portions composed of blocks or ribs. In the pneumatic tire, the plurality of land portions defined by grooves are provided on a tread, curved chamfered portions are formed on end peripheries of the land portions, a relation between a groove width A of the groove on a tread surface, the groove being adjacent to the end periphery, and a curvature radius B on the chamfered portion is established as: B=kA, and a value of a constant k is set in a range of 0.2 to 0.3.

Abstract: A tyre for vehicles includes a carcass structure, a belt structure, and a tread. The tread includes a row of central blocks and a row of intermediate blocks arranged on each side of an equatorial plane of the tyre between a central longitudinal groove formed astride the equatorial plane and a pair of longitudinal lateral grooves. The blocks of the central rows are separated from the blocks of the intermediate rows by circumferential sipes and are circumferentially staggered by a first predetermined quantity relative to the blocks of the intermediate rows. Also, the blocks of the central rows arranged on a first side of the equatorial plane of the tyre are circumferentially staggered by a second predetermined quantity relative to the blocks of the central rows on a second side of the equatorial plane of the tyre.

Abstract: Tread profile of a snow tire for a vehicle in which at least two vehicle wheels are rotatably mountable outside of a longitudinal vehicle axis. The tread profile includes a plurality of profile block rows aligned in a circumferential direction and distributed in an axial direction from a first tire shoulder adapted to be positioned toward an outside of the vehicle in an operational state of the tire on the vehicle to a second tire shoulder adapted to be positioned toward an inside of the vehicle in an operational state of the tire on the vehicle.

Abstract: A heavy duty tire comprises a carcass extending between bead portions, and a belt layer disposed radially outside the carcass in a tread portion. The belt layer comprises a radially outmost ply and a radially inner widest ply having a belt maximum width BW in a range of from 85 to 105% of a tread width. The tread portion is provided with a pair of axially inner main grooves and a pair of axially outer main grooves, each extending continuously in the circumferential direction of the tire. The axially inner main grooves each is disposed on one side of the tire equator so that groove center lines thereof are positioned symmetrically about the tire equator, and an axial distance L2 from the tire equator to each said groove center line is in a range of from 14 to 20% a half of said maximum width BW.