Bias tire

A bias tire comprising:

• a pair of bead cores;
• a bead filler disposed outward of each of the pair of bead cores in a tire radial direction;
• and
• a carcass layer stretching between the respective pair of bead cores, wrapping around end portions of the respective bead cores, the carcass layer having opposite ends turned back to be fixed,
• in a cross section in a tire meridian direction, a cord on an innermost side of the carcass layer in a tire lateral direction having a curved shape projecting laterally outward at any position within a range of height from 0.9 times to 1.6 times a height of a flange of a rim on which the bias tire is assembled, and
• in the cross section in the tire meridian direction, a cord on an outermost side of the carcass layer in the tire lateral direction having a curved shape projecting laterally outward at any position within a range of height from 1.1 times to 1.6 times the height of the flange;
• wherein at a position at height 1.5 times the height of the flange in a cross section in the tire meridian direction, the radius of curvature R1 of the cord on the innermost side of the carcass layer in the tire lateral direction, and a radius of curvature R4 of a tire profile line, have a ratio R1/R4 that is 2.5 or less.

A bias tire comprising:

• a pair of bead cores;
• a bead filler disposed outward of each of the pair of bead cores in a tire radial direction;
• a carcass layer stretching between the respective pair of bead cores, wrapping around end portions of the respective bead cores, the carcass layer having opposite ends turned back to be fixed;
• the pair of bead cores is one of a plurality of the pairs of bead cores;
• a plurality of the bead fillers and a. plurality of the carcass layers are provided corresponding to the respective bead cores;
• cord directions of the carcass layers intersect each other between adjacent carcass layers;
• the plurality of the carcass layers is turned. back to be fixed while wrapping around the corresponding bead cores and the bead fillers corresponding to the respective bead cores;
• and
• in a cross section in a tire meridian direction, one of the plurality of bead fillers has a maximum height in the tire radial direction, the maximum height being from 0.17 times to 0.23 times a cross-sectional height of a carcass,
• in the cross section in the tire meridian direction, a cord on an innermost side of the carcass layer in a tire lateral direction having a curved shape projecting laterally outward at any position within a range of height from 0.9 times to 1.6 times a height of a flange of a rim on which the bias tire is assembled, and
• in the cross section in the tire meridian direction, a cord on an outermost side of the carcass layer in the tire lateral direction having a curved shape projecting laterally outward at any position within a range of height from 1.1 times to 1.6 times the height of the flange;
• wherein in a cross section in the tire meridian direction, the cord on the innermost side of the carcass layer in the tire lateral direction has a radius of curvature R1 at a position at height 1.5 times the height of the flange, and has a radius of curvature R3 at a position at length of one-third of a length along the tire radial direction from a maximum height position of the carcass layer to a maximum width position of the carcass layer, a ratio R1/R3 being from 0.5 to 0.9.