A method of manufacturing a pneumatic tire comprising a belt which is wound with a belt-under diameter D outside a carcass ply in a tire-radial direction, includes preparing a strip-like rubber-coated cord member where a plurality of belt cords which are arranged approximately parallel are coated with rubber and a width of the cord member in a lateral direction is D sin . The cord member is cut at the cord angle with respect to a longitudinal direction to cut out a belt forming member having a parallelogram which includes circumferential direction sides extending in a tire circumferential direction in a wound state and formed as cut portions and inclined sides extending parallel to the belt cord and defined as both side portions of the cord member. The belt forming member is wound into a circular cylindrical shape and joined the inclined sides which face each other to each other.

A method of manufacturing a pneumatic tire includes preparing a belt forming member formed of belt cords arranged parallel and covered with rubber. In a development state, the belt forming member is formed into a parallelogram, so that in a state wound with the belt cords extending in a direction inclined at a cord angle , the belt forming member is formed into a circular cylindrical configuration where a belt-under diameter D is not smaller than 940 mm and not larger than 960 mm and a belt width W is not smaller than 270 mm and not larger than 310 mm, and the cord angle , the belt-under diameter D and the belt width W satisfy a relationship of 0.577 DW/tan<1.07D. The belt forming member is wound and joined at a joint portion where the inclined sides are brought into contact with each other.

A belt layer of a pneumatic tire includes a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, and a reinforcement belt. A cord angle of the second main working belt differs from that of the first main working belt in a direction with respect to a tire-circumferential direction. A cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees. A width of the reinforcement belt is equal to or wider than 50% of a tire-section width and not wider than either narrower one of the first and second main working belts. A width of a shoulder land portion is between 10% and 15% of a tread width which is a distance from a center of the tread portion to one end of the tread portion.

A pneumatic tire comprises a carcass layer, a belt layer radially outward of the carcass layer, and a tread rubber radially outward of the belt layer. A belt cord angle of a belt layer large angle belt is 45-70, opposite sign belt cord angles of cross belts are 10-45, and a reinforcing layer belt cord angle is within 5 of a circumferential direction. A reinforcing layer width Ws and a carcass cross-sectional width Wca satisfy 0.60Ws/Wca0.70. The reinforcing layer is radially outward of the cross belts which are radially outward of the large angle belt. A wider cross belt width Wb2 of the pair and Wca satisfy 0.79Wb2/Wca0.89. Wb2 and Wca satisfy 0.79Wb2/Wca0.89. Relationships 0.79Wb2/Wca0.84 and either 0.82TW/Wca0.92 or 0.79TW/SW0.89 are satisfied, where TW is a tread width and SW is a total tire width.

A pneumatic tire according to an embodiment includes a belt ply containing steel cords arranged to be inclined with respect to a tire circumferential direction, and a bending stiffness of the belt ply calculated by multiplying a bending stiffness per cord of the steel cords by a cord end count is 10 N/25.4 mm or more and less than 30 N/25.4 mm. A circumferential strength of the belt ply calculated by multiplying a product of a breaking load per cord of the steel cords and the cord end count by cos , where represents an inclination angle of the steel cords with respect to the tire circumferential direction, is 13.5 kN/25.4 mm or more.

A pneumatic tire comprises a carcass layer, a belt layer radially outward of the carcass layer, and a tread rubber radially outward of the belt layer. The belt layer is formed by laminating a large angle belt having a belt-cord angle of 45-70, a pair of cross belts having belt cord angles of 10-45 with opposite sign belt cord angles, and a reinforcing layer having a belt cord angle satisfying 5 relative to a circumferential direction. A reinforcing layer width Ws and a carcass cross-sectional width Wca satisfy 0.60Ws/Wca0.70. A wider cross belt width Wb2 of the pair of cross belts and the carcass width Wca satisfy 0.79Wb2/Wca0.89. Relationships 0.79Wb2/Wca0.84 and either 0.82TW/Wca0.92 or 0.79TW/SW0.89 are satisfied, where TW is a tread width and SW is a total tire width.

A pneumatic vehicle tire having a strength member ply comprising steel monofilaments having a cross-sectional area of 98 mm.sup.2 to 125 mm.sup.2 per meter of strength member ply, the steel has a carbon content of at least 0.86% by weight. To improve rolling resistance the monofilaments have a brass coating having a copper content of 61% by weight to 70% by weight and a zinc content of 30% by weight to 39% by weight, in that the monofilaments have a linear density of 92 g/100 m to 105 g/100 m, and the monofilaments each have a tensile density Td of 34 MPa/(g/100 m) to 39 MPa/(g/100 m). The strength member ply has an areal strength AS of 109 Nmm.sup.2 to 166 Nmm.sup.2, and the rubber material has a breaking elongation of 300% to 450%.

A tire can include beads, a carcass, sidewall layers, a tread, a belt, and a band. A carcass ply of the carcass can include a ply body and a pair of turned-up portions. An end of each turned-up portion can be located axially inward of an end of the belt. A ratio of a thickness from the carcass to an outer surface of the tire along a first normal line to a thickness from the carcass to the outer surface of the tire along a second normal line can be not less than 1 and not greater than 2.