A pneumatic tire comprises a mesh reinforcing layer formed from a tape wound circumferentially of the tire plural turns while repeating a zigzag unit comprising two inclined portion so that a number N of the repeated zigzag units are arranged while shifting in the tire circumferential direction and partly overlapping with each other. The amount of positional shift between the circumferentially adjacent zigzag units is in a range from 0.7 to 1.3 times a value of 360/N in terms of the angle α around the tire rotational axis.

A pneumatic tire has a tread reinforcing layer comprising a net structure formed from a tape of rubber coated reinforcing cord(s). The net structure comprises first oblique segments and second oblique segments of the tape which intersect with each other, forming interspaces therebetween. The first oblique segment has a first axial outer part in which the angle of the tape with respect to the tire circumferential direction decreases toward one end in the tire axial direction of the net structure. The second oblique segment has a second axial outer part in which the angle of the tape with respect to the tire circumferential direction decreases toward the above-said one end of the net structure. The first axial outside part is connected to the second axial outside part directly or through a circumferential segment of the tape.

Provided is a pneumatic tire that has excellent durability and achieves both high load capacity and space-saving properties. This disclosure provides a pneumatic tire to be mounted on a vehicle, which includes a tread in contact with a road surface and a belt layer provided inside the tread in the tire radial direction, where the pneumatic tire has an outer diameter of 350 mm or more and 600 mm or less, and when the rim width of a rim wheel assembled to the pneumatic tire is defined as RW, and the tire cross-sectional width of the pneumatic tire is defined as SW, they satisfy the relationship of

0.78≤RW/SW≤0.88, and the pneumatic tire uses a rubber composition containing a rubber component containing 50% by mass or more of natural rubber and/or synthetic isoprene rubber, and syndiotactic 1,2-polybutadiene.

A pneumatic tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising: a zigzag belt reinforcing structure formed of a strip of one or more reinforcement cords, the strip of one or more reinforcement cords being inclined at 5 to 30 degrees relative to the centerplane of the tire extending in alternation to turnaround points at each lateral edge, wherein the zigzag strip of cords is formed from two different reinforcement cords made of different materials, and a low angle belt of the tire has a higher EPI than the zigzag belt.

Reinforcers of crown layers (211, 212) of a civil engineering vehicle are made of metal and wound, in the form of a strip (5) of width W, along a circumferential zigzag trajectory following a periodic curve (7), extending over a number N of periods P distributed over a number T of circumferences 2ΠR and satisfying the two relations N*(W/sin A)=2ΠR*t, where 0.6⇐t⇐1, and N*P=2ΠR*T, so as to form a bilayer (21). Additionally, for at least 40% of the strip crossovers (53) axially positioned, relative to the circumferential direction (XX′), at an axial distance L1 equal to not more than 0.25 times the amplitude L of the periodic curve (7), the circular bilayer portion (213), centred on the strip crossover (53) and having a radius R1 equal to twice the width W of a strip (5), comprises Ne outer strip crossovers and Ni inner strip crossovers, such that |Ne-Ni|/(Ne+Ni)⇐0.3.

Reinforcers of crown layers (211, 212) of a civil engineering vehicle are made of metal and wound, in the form of a strip (5) of width W, along a circumferential zigzag trajectory following a periodic curve (7), extending over a number N of periods P distributed over a number T of circumferences 2ΠR and satisfying the two relations N*(W/sin A)=2ΠR*t, where 0.6⇐t⇐1, and N*P=2ΠR*T, so as to form a bilayer (21). Additionally, for at least 40% of the strip crossovers (53) axially positioned, relative to the circumferential direction (XX′), at an axial distance L1 equal to not more than 0.25 times the amplitude L of the periodic curve (7), the circular bilayer portion (213), centred on the strip crossover (53) and having a radius R1 equal to twice the width W of a strip (5), comprises Ne outer strip crossovers and Ni inner strip crossovers, such that |Ne-Ni|/(Ne+Ni)⇐0.3.

A tire includes a carcass ply, a tread disposed radially outward of a crown region of the carcass ply, and a belt structure having an overall axial width substantially equal to a tread width interposed between the tread and the crown region in circumferential surrounding relation to the carcass ply. The belt structure includes a first belt layer and a second belt layer radially adjacent the first belt layer. The first belt layer includes a first reinforced composite with first reinforcement cords embedded in a first rubber matrix. The first reinforcement cords have a construction of 1100/4 dtex with a twist between 150 TPM and 250 TPM and a dipping tension between 100 mN/tex and 200 mN/tex.

A pneumatic tire has a tread reinforcing layer comprising a net structure formed from a tape of rubber coated reinforcing cord(s). The net structure comprises first oblique segments and second oblique segments of the tape which intersect with each other, forming interspaces therebetween. The first oblique segment has a first axial outer part in which the angle of the tape with respect to the tire circumferential direction decreases toward one end in the tire axial direction of the net structure. The second oblique segment has a second axial outer part in which the angle of the tape with respect to the tire circumferential direction decreases toward the above-said one end of the net structure. The first axial outside part is connected to the second axial outside part directly or through a circumferential segment of the tape.

A pneumatic tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising: a zigzag belt reinforcing structure formed of a strip of reinforcement cords, the strip of reinforcement cords being inclined at 5 to 30 degrees relative to the centerplane of the tire extending in alternation to turnaround points at each lateral edge, wherein the strip of cords is formed from two different cords made of different materials.

A pneumatic tire includes: a carcass; at least one layer of a belt; and a tread, the belt including an endless belt layer having provided therein treats, each of the treats being formed by covering a cord with rubber and extending in zigzag fashion in the tire circumferential direction, in which in the endless belt layer, a front surface a and a rear surface of each of the treats are reversed at both tire widthwise ends, and on at least one tire widthwise end of the treats, a treat reversal position is, at least partially in the tire circumferential direction, displaced in the tire width direction from another treat reversal position adjacent in tire circumferential direction.