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.

A belt cover layer is disposed in a tire, spanning between shoulder regions, and is formed by winding one belt cover material in a helical shape around a rotation axis on an outer side of the belt layer in a radial direction, the belt cover layer includes a lap winding portion between the shoulder regions, in which parts of circumferential portions, adjacent in a width direction, of the belt cover material wound in a helical shape are lap-wound in the radial direction, a width of the lap winding portion in the width direction is 3-30% of a width of the belt cover layer in the width direction, and in portions of the belt cover layer in the shoulder regions, the circumferential portions, adjacent in the width direction, of the belt cover material are wound with out being lapped in the radial direction.

A hooping reinforcement of a tire for a heavy duty civil engineering type vehicle is disclosed. The crown reinforcement (3) of the tire (1), radially on the inside of a tread (2), comprises a protective reinforcement (6), a working reinforcement (5) and a hooping reinforcement (7). Said hooping reinforcement (7) has an axial width at most equal to the smallest axial width (L61, L62) of the two working layers (61, 62), and comprises at least two hooping layers (71, 72) that are formed from strips each made up of elastic metal reinforcers. Each hooping layer (71, 72) is made up of an axial juxtaposition of contiguous turns of the strip (8), which are circumferentially wound around the working layer (51). Each strip (8) is at least 35 mm and at most 250 mm thick, and its distributed breaking tension is at least equal to 100 daN/mm.

In a tire, a tread includes a cap layer, an intermediate layer formed such that a loss tangent of the intermediate layer at 30° C. is less than a loss tangent of the cap layer at 30° C., and a base layer formed such that a loss tangent of the base layer at 30° C. is less than the loss tangent of the intermediate layer at 30° C. The intermediate layer is disposed outwardly of the base layer and the cap layer is disposed outwardly of the intermediate layer, in the radial direction. An outer end of the intermediate layer is disposed outwardly of an outer end of the base layer and an outer end of the cap layer is disposed inwardly of the outer end of the intermediate layer, in the axial direction. A difference between an axial width of the cap layer and an axial width of the base layer is not less than −10 mm and not greater than 10 mm.

A tire 2 has a nominal aspect ratio of 65% or less. The tire 2 includes a tread 4, a pair of sidewalls 6, a pair of chafers 8, a pair of beads 10, and a band 40. The band 40 includes a full band 44 having ends 44e opposed to each other across an equator plane, and a pair of edge bands 46 located outward of the ends 44e of the full band 44 in a radial direction. An outer surface of each chafer 8 has a fitting recess 62 into which a flange F of a rim R fits.

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 tire (10) for a vehicle comprises a radially outermost working layer (41) which comprises at least one undulation (412) in line with a central rib (251) of the tread (2). The undulation (412) is radially on the outside of the points of the working layer (41) in line with the bottom face (243) of the circumferential groove (24) closest to the undulation (412) and has an amplitude of at least 1 mm. The undulation (412) is vertically in line above at least one local reinforcing layer (6) comprising reinforcing elements that are mutually parallel and make with the circumferential direction (XX′) of the tire an angle of which the absolute value is at most equal to 5°.

A tire for use under heavy loads and high speeds includes a tread, a crown reinforcement, a carcass reinforcement with at least one ply wound about a pair of bead cores, and a cut/puncture resistant breaker layer disposed radially adjacent the crown reinforcement and radially inside the tread. The cut/puncture resistant breaker layer is formed of monofilaments inclined at between about 0 degrees and about 10 degrees relative to an equatorial plane of the tire.

The outer diameter of the pneumatic tire is 350 mm or more and 600 mm or less, and the tire width is 125 mm or more and 255 mm or less. An aspect ratio of the pneumatic tire is 40% or more and 75% or less, a rim diameter of a rim wheel is 10 inches or more and 22 inches or less, and a rim width of the rim wheel is 3.8 inches or more and 8 inches or less. The pneumatic tire satisfies the relationship of 0.78≤RW/SW≤0.99 and 0.56≤RD/OD≤0.75. The carcass has a plurality of carcass cords arranged at intervals, the carcass cords are formed of prescribed organic fibers, and the breaking strength of the carcass cords is ≥2.2 kN/cm.

Provided is a pneumatic tire. A belt cover layer including organic fiber cords spirally wound along the tire circumferential direction is provided on the outer circumferential side of a belt layer in a tread portion. The belt cover layer includes at least one full cover layer covering the entire width direction of the belt layer, and the number of layers in the shoulder region is two or less. Polyethylene terephthalate fiber cords of which the elastic modulus at a load of 2.0 cN/dtex at 100° C. is in a range of 3.5 cN/(tex•%) to 5.5 cN/(tex•%) are used as the organic fiber cords constituting the belt cover layer. The ratio Sh/Ce of a rising amount Sh in the shoulder region and a rising amount Ce at a tire equator position during traveling at 240 km/h is 0.85 to 1.15.