Provided is a pneumatic tire having at least one carcass layer as a skeleton extending in toroidal shape over a pair of bead portions, at least one belt layer and a tread disposed on an outer side in the radial direction of a crown portion of the carcass. In a tire section in the widthwise direction in state where the tire is assembled to an application rim, ratio BD/BW of radius difference BD between radius at a center portion and radius at an end portion in the widthwise direction of an innermost layer of the belt layer, to width BW of the innermost layer, ranges from 0.01 to 0.04, and ratio TD/TW of radius difference TD between radius at a center portion and radius at an end portion of the tread in the widthwise direction of a tread ground surface, to tread ground-contact width TW, satisfies BD/BW<TD/TW.

This invention relates to tacky finishes and to the textile materials and articles treated with the tacky finishes. The tacky finishes provide improved processing features for end-use articles that contain such finishes. The tacky finish may be combined with other adhesion promotion finishes in the treatment of textile materials. The textile materials and articles may be used as rubber reinforcing materials, such as automotive tire cap ply, single end tire cord, carcass reinforcement and side wall reinforcement. End-use articles that contain the treated textile materials include rubber-containing materials such as automobile tires, belts, and hoses. This invention also relates to the methods for manufacturing the treated textile materials and articles.

Provided is a heavy load tire that includes: the first belt layer including a cord extending in the tire circumferential direction; the second belt layer including a cord extending to be inclined with respect to the tire circumferential direction; and the third belt layer including a cord extending to be inclined at an angle of 30 or less with respect to the tire circumferential direction in a direction opposite to that of the cord of the second belt layer. The first, the second, and the third belt layer are arranged in the stated order from the inner side to the outer side in the tire radial direction. The third belt layer has a width w.sub.3 that is 80% or more of a tread width w, and the second belt layer has a width w.sub.2. The width w.sub.2 and the width w.sub.3 satisfy the relation w.sub.2<w.sub.3.

The pneumatic tire includes a carcass layer, a belt layer disposed outward of the carcass layer in the tire radial direction, and a tread rubber disposed outward of the belt layer in the tire radial direction. Moreover, the belt layer is formed by laminating a pair of cross belts having a belt angle with an absolute value from 10 to 45 both inclusive and mutually opposite signs, and the circumferential reinforcing layer having a belt angle within a range of 5 relative to the tire circumferential direction. Moreover, the distance (Gcc) from the tread profile to the tire inner circumferential surface along the tire equatorial plane and the distance (Gsh) from the tread edge to the tire inner circumferential surface have a relationship satisfying 1.10Gsh/Gcc.

Provided is a pneumatic tire having at least one carcass layer as a skeleton extending in toroidal shape over a pair of bead portions, at least one belt layer and a tread disposed on an outer side in the radial direction of a crown portion of the carcass. In a tire section in the widthwise direction in state where the tire is assembled to an application rim, ratio BD/BW of radius difference BD between radius at a center portion and radius at an end portion in the widthwise direction of an innermost layer of the belt layer, to width BW of the innermost layer, ranges from 0.01 to 0.04, and ratio TD/TW of radius difference TD between radius at a center portion and radius at an end portion of the tread in the widthwise direction of a tread ground surface, to tread ground-contact width TW, satisfies BD/BW<TD/TW.

This pneumatic tire is provided with: a pair of carcass layers arranged so as to extend from the respective left and right beads of the tire across the tread; and a plurality of crossing belts arranged on the outside of the carcass layers in the radial direction of the tire. The pair of carcass layers is arranged so as to overlap each other in the tire width direction. The overlapping width (Wc) of the carcass layers is in the range of 0.5 mmWc40 mm.

A pneumatic tire includes: an annular structure that is cylindrical and metal where at least an outer side surface in the radial direction is a rough surface; a tread rubber layer that will become a tread portion provided along a circumferential direction of the annular structure on an outer side of the annular structure; and a carcass portion including fibers covered with rubber, provided on at least both sides in a direction parallel to a center axis of the cylindrical structure including the annular structure and the tread rubber layer.

A crown reinforcement of a tyre includes at least one crown triangulation belt having a given width value (R). The belt essentially includes elementary widths each having a given width value (B). Each of the elementary widths has a flattened cross section and forms an angle () with a circumferential direction of the tyre, the angle () being between 10 and 80. Adjacent elementary widths, which are positioned directly next to each other, are separated by a groove of a given width value (j) and are connected to each other by one or more weak bridges.

A method of making a tire comprising the steps of providing a core; forming a first layer of ply by winding a strip of one or more rubber coated cords onto the core in a geodesic pattern extending from a first shoulder to a second shoulder opposite said first shoulder and being tangent to the bead at a location between said first shoulder and said second shoulder.

A pneumatic tire 1 includes: a tread 2; sidewalls 3; a carcass 5; and a belt 6. A distribution of a thickness Tg(y) of the tread in a region extending in an axially outward direction of the tire, is represented by equation Tg(y)=AaCt(y). A represents a thickness of the tread at a crown center 17. Ct(y) represents a distribution of a displacement of the tread surface in a radially inward direction of the tire , in a region from the crown center to an end portion of the belt. a represents a coefficient selected from a range of values that are greater than or equal to 0.10, and are not greater than 0.35. A displacement Cc(y) of the carcass 5 in the radially inward direction of the tire, in a region extending in the axially outward direction of the tire from the crown center, is represented by equation Cc(y)=(1a)Ct(y).