In a pneumatic tire, a belt cover disposed on an outer side in a radial direction of a belt layer includes a cover portion having a width equal to a width of the belt cover, and edge cover portions layered on the cover portion at two locations on both sides of the cover portion. Of the edge cover portions at the two locations, one of the edge cover portions is located on a radially inner side of the cover portion, and the other of the edge cover portions is located on a radially outer side of the cover portion. The belt cover is a single strip material having a band-like shape spirally wound about a tire rotation axis, and the cover portion at least partially includes a portion where circumferential portions adjacent in the width direction of the strip material that is spirally wound overlap in the radial direction.

Method for the treatment of single-filament polyethylene terephthalate cords for the reinforcing layers of a pneumatic tyre comprising (a) an adhesive solution coating step, wherein the single filament cord is immersed in an adhesive solution; (b) a drying step, wherein the cord covered in adhesive resin is held within a drying oven at a temperature of between 120 and 180° C.; and (c) a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 230 and 260° C. for a period of between 30 and 90 seconds. During the thermobonding step, the single filament cord is subjected to a tension of between 8 and 12 mN/dtex.

Provided is a pneumatic tire that has excellent fuel efficiency and rubber strength and combines high load capacity and space saving. A pneumatic tire mounted on a vehicle, comprises: a tread configured to come into contact with a road surface; and a belt layer located on an inner side of the tread in a tire radial direction, wherein an outer diameter of the pneumatic tire is 350 mm or more and 600 mm or less, the following relationship:

0.78≤RW/SW≤0.88 is satisfied, where RW is a rim width of a rim wheel to be attached to the pneumatic tire and SW is a tire section width of the pneumatic tire, and a rubber composition that contains: a rubber component containing a diene-based rubber; and a mercaptocarboxylic acid compound is used in the pneumatic tire.

A heavy-duty tire comprises a tread reinforcing belt comprising first to fourth belt plies each composed of belt cords inclined with respect to the tire equatorial plane. The first radial distance L1 between the belt cords of the third belt ply and the belt cords of the fourth belt ply is not more than the second radial distance L2 between the belt cords of the second belt ply and the belt cords of the third belt ply. The cord count E4 of the fourth belt ply is smaller than the cord count E3 of the third belt ply.

The present invention relates to a tire cord having excellent durability while being thin in thickness, a manufacturing method thereof and a tire comprising the same.

A radial pneumatic tire for a heavy-duty civil engineering vehicle aims to reduce the risk of tread separation of the pneumatic tire, during driving on sharp rocks, while ensuring good resistance to cracking of the crown reinforcement. The pneumatic tire has a protective reinforcement with two protective layers, the radially innermost protective layer having elastic metal reinforcements with a diameter D1 which are axially distributed according to an axial pitch P1, and the radially outermost protective layer has elastic metal reinforcements with a diameter D2 which are axially distributed according to an axial pitch P2. In the tire the following relations are satisfied:
D1>D2
P1>P2
P1>=1.2*D1 and P2>=1.2*D2
2.5<=(D1*P1)/(D2*P2)<=5.

A pneumatic tire comprises a carcass layer, a belt layer disposed on an outer side of the carcass layer in a tire radial direction, and a tread rubber disposed on the outer side of the belt layer in the tire radial direction. The belt layer formed by laminating an angle belt having a belt angle≧45° and ≦70° in absolute values, a pair of cross belts, having belt angles of ≧10° and ≦45° in absolute values and having belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a tire circumferential direction. A tread width TW and a total tire width SW such that 0.79≦TW/SW≦0.89. A width Ws of the circumferential reinforcing layer and a cross-sectional width Wca of the carcass layer such that 0.60≦Ws/Wca≦0.70.

A pneumatic tire having a dual reinforcing belt structure, which minimizes deformation of the tire tread section during high-speed driving, particularly deformation of the tire shoulder parts, suppresses a standing wave phenomenon, and enhances driving stability. The pneumatic tire having a dual reinforcing belt structure includes a tread section, a sidewall section and a bead section, in which the bead section is provided with a carcass in a turned-up manner, a plurality of belt layers are provided by lamination between the carcass and the tread section, and a reinforcing belt is provided on top of the belt layer, while the reinforcing belt is a dual reinforcing belt in which belts made of different materials are arranged.

An aircraft pneumatic tire includes a spirally wound belt layer in which a ribbon-shaped first strip material with a first belt cord including organic fibers and being covered with rubber is spirally wound; and zigzag belt layers in which a ribbon-shaped second strip material with a second belt cord including organic fibers and being covered with rubber extends and is wound in a circumferential direction while bending zigzag by being folded back at width directional end edges to an outer circumferential side of the spirally wound belt layers. The maximum width of the spirally wound belt layers is wider than the maximum width of the zigzag belt layers, and the width of the second strip material is wider than the width of the first strip material.

A bicycle-tire reinforcing ply comprising a woven fabric that comprises liquid crystalline polyester fiber yarns, wherein each of the fiber yarns comprises three or more single fibers having an average fiber diameter of 25 μm or larger, and the fiber yarns satisfies the following formula:

[No. of single fibers per fiber yarn]×[average fiber diameter (μm)]≤1700.