Agricultural tire

An agricultural tire comprising:

• at least one carcass ply in which steel cords are used as carcass cords and which has a carcass body portion that toroidally bridges bead portions on both tire axial direction sides and has turn-up portions that are turned up on outer sides in the bead portions;
• at least two belt layers in which steel cords are used as belt cords and which are disposed on a tire radial direction outer side of a crown region of the carcass ply;
• and
• a tread portion that is disposed on the tire radial direction outer side of the belt layers,
• wherein
• a sum total of a surface area of a tire pattern is equal to or less than 40% of a product of a tire tread width and a tire perimeter,
• the tire has an aspect ratio of 65% to 75%, and
• when, in a no-load state in which the tire is mounted on a normal rim and no internal pressure is being applied to the tire, W denotes a distance from a tire equatorial plane to a tire axial direction outermost point of the carcass body portion, D denotes a tire radial direction height from bead base portions to the carcass body portion at the tire equatorial plane, R1 denotes a radius of curvature of the carcass ply in a range from the tire equatorial plane to a position P1 located 0.6 W away from the tire equatorial plane in the tire axial direction, R2 denotes a radius of curvature of the carcass body portion in a range from the position P1 to a position P2 located 0.7 D on the tire radial direction outer side from the bead base portions, and R3 denotes a radius of curvature of the carcass body portion in a range from the position P2 to a position P3 located 0.3 D on the tire radial direction outer side from the bead base portions, and R1, R2, and R3 are such that 0.07≦R2/R1≦0.11 and 0.5≦R2/R3≦0.7.