In my pneumatic tire, a circumferential belt is formed by a spirally wound band strip, the tread includes at least three circumferential land portions, cords of the inclined belt layer are steel cords, the total cross-sectional area of the steel cords per 25 mm of width perpendicular to the extending direction of the steel cords is from 2.3 to 4.0 mm.sup.2, a gap is present in the tire width direction between each lap of the band strip, and the relational expression W/{(w+2d)+0.3w}1.0 is satisfied, where W is the width in the tire width direction of the circumferential land portion with the smallest width among the circumferential land portions, w is the width of the band strip in the tire width direction, and d is the width of the gap in the tire width direction between each lap of the band strip.

A tire includes a tire frame member made of a resin material; a top tread disposed outside the tire frame member in a tire radial direction; a belt layer disposed between the tire frame member and the top tread, the width dimension BW of the belt layer in a tire axial direction being in a range of from 85 to 105% of the ground width dimension TW of the top tread; and a belt reinforcement layer disposed at end portions of the belt layer in a tire width direction, the belt reinforcement layer having lower stiffness than the belt layer.

A tire includes a tire frame member made of a resin material; a top tread disposed outside the tire frame member in a tire radial direction; and a belt layer disposed between the tire frame member and the top tread, the belt layer constituting of a center area at a middle in a tire width direction and shoulder areas at both sides of the center area in the tire width direction, a width dimension BCW of the center area in a tire axial direction being in a range of from 85 to 105% of a ground width dimension TW of the top tread. In a case in which Hc represents stiffness of the center area, and Hs represents stiffness of the shoulder area, Hc>Hs.

A tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements. The tire additionally comprises, in each shoulder, at least one end of a layer of reinforcing elements that are mutually parallel in the layer and are oriented circumferentially, said end being axially outside said at least two working crown layers, the reinforcing elements of the carcass reinforcement having a diameter less than 1 mm and being made up of threads with a diameter strictly greater than 0.16 mm, and said reinforcing elements of the carcass reinforcement being advantageously non-wrapped metal cords that return a flow rate of less than 20 cm.sup.3/min in what is referred to as the permeability test.

A tire includes a circumferential tread disposed in a crown region of the tire and an undertread disposed below the circumferential tread. The tire also has a pair of bead regions, including a first bead region and a second bead region, and a body ply extending from the first bead region to the second bead region. The tire further has a pair of sidewalls, including a first sidewall extending between the first bead region and the circumferential tread and a second sidewall extending between the second bead region and the circumferential tread. The tire also has a sidewall antenna adjacent to the first sidewall. The sidewall antenna has a first end contacting the undertread and a second end contacting the body ply.

A method of manufacturing a pneumatic tire includes forming a green tire. Forming the green tire includes: a first step of forming a first belt portion by winding a first belt on an outer peripheral surface of an inner liner and, thereafter, forming a second belt portion by winding a second belt on the first belt portion thus acquiring a belt layer; and a second step of acquiring a reinforcing layer by winding a reinforcing belt on the second belt portion. The second step includes: a first parallel winding treatment where the reinforcing belt is wound one turn on a first circumference; a spiral winding treatment where the reinforcing belt is spirally wound in a tire width direction; and a second parallel winding treatment where the reinforcing belt is wound on a second circumference within a range of from 24030 with one turn set to 360.

A tire with a circumferential reinforcement layer formed by spirally winding rubber strips in the same direction from different positions arranged in the width direction of the tire. The rubber strips (12A and 12B) are arranged with spaces in a part or the entirety of the tire in the width direction; among those end portions of the rubber strips, at least medial end portions (12Bs and 12Ae) that are located on the equatorial plane side of the tire are arranged at positions where the medial end portions completely overlap with rib-form land portions (2a) in the width direction of the tire; and the width of the rib-form land portions overlapping with the medial end portions is defined as W and the width of the rubber strips is defined as G, wherein a relationship G<W is satisfied.

A pneumatic tyre for heavy load vehicle wheels, includes: a carcass structure, a belt structure applied in a radially outer position with respect to the carcass structure, and a tread band. The belt structure includes at least one reinforcing layer incorporating a plurality of reinforcing cords arranged substantially along the circumferential direction. The belt structure further comprises a first main belt layer and a second main belt layer wherein the first main belt layer includes a first plurality of metal cords inclined at a first angle and the second main belt layer includes a second plurality of metal cords inclined at a second angle. The metal cords of the first and second plurality of metal cords have a diameter not greater than 1.30 mm, and include a plurality of filaments having a diameter not greater than 0.30 mm.

A tyre includes a carcass structure including at least one carcass ply, a belt structure applied in a radially outer position with respect to the carcass structure, and a tread band applied in a radially outer position with respect to the belt structure. The belt structure includes two main belt layers and first and second reinforcing strips incorporating a plurality of reinforcing elements arranged substantially in the circumferential direction. The reinforcing elements include at least one high-elongation metal cord including a plurality of intertwined strands, and each strand includes a plurality of filaments. Each filament has a diameter not greater than 0.175 mm.

A pneumatic tire includes a cap ply disposed between a belt layer and a tread portion so as to wholly cover the belt layer in a tire width direction, and two edge plies disposed between the belt layer and the tread portion so as to respectively cover edge portions of the belt layer in a tire width direction. A first region and a second region are formed by dividing the tread portion in two by a tire equator plane. The first region has a first void ratio, and the second region has a second void ratio smaller than the first void ratio.