Tire and manufacturing method of tire

A tire comprising;

• a rubber portion formed from ribbon rubber which is spirally wound along a tire-circumferential direction, wherein
• the ribbon rubber includes:
• a parallel portion having a first end which is an end of the ribbon rubber and placed parallel to the tire-circumferential direction to configure a predetermined row of a tire-width direction, and
• an inclined portion having a first end connected to a second end of the parallel portion, the inclined portion being placed at a slant with respect to the tire-circumferential direction from the predetermined row of the tire-width direction to a row which is adjacent to the predetermined row, and
• the parallel portion includes a standard portion having the same cross-sectional area as a cross-sectional area of the second end, and a small portion placed close to the first end and having a cross-sectional area smaller than the cross-sectional area of the standard portion,
• wherein positions of the first end and the second end of the parallel portion are the same in the tire-circumferential direction, and
• a portion of the inclined portion is superposed on a portion of the small portion, and
• a rubber volume at a location where the inclined portion is located in the predetermined row of the tire-width direction is equal to an insufficient rubber volume of the small portion with respect to the standard portion having the same length.

A tire comprising;

• a rubber portion formed from ribbon rubber which is spirally wound along a tire-circumferential direction, wherein
• the ribbon rubber is alternately provided with parallel portions placed parallel to the tire-circumferential direction, and inclined portions which are inclined with respect to the tire-circumferential direction and placed between adjacent two rows of a tire-width direction, such that the ribbon rubber is spirally wound along the tire-circumferential direction,
• an end of the ribbon rubber in a length direction is an end of the parallel portion which configures a predetermined row of the tire-width direction,
• the ribbon rubber includes a standard portion placed at an intermediate portion in the length direction and having a uniform cross-sectional area, and a small portion placed on an end in the length direction and having a cross-sectional area smaller than a cross-sectional area of the standard portion, and
• at least the predetermined row of the tire-width direction and the row which is adjacent to the predetermined row are configured by the small portion.