Motorcycle tire for uneven terrain

A motorcycle tire for an uneven terrain, the motorcycle tire comprising:

• a tread having an outer surface that forms a tread surface, wherein the tread includes multiple blocks that extend outward in a radial direction;
• a pair of sidewalls that extend inward from ends, respectively, of the tread in the radial direction;
• a pair of beads disposed inward of the sidewalls, respectively, in the radial direction;
• a carcass that is extended on and between one of the beads and the other of the beads in a portion inward of the tread in the radial direction;
• and
• a pair of rubber reinforcing layers disposed inward of the carcass near ends, respectively, of the tread surface, wherein
• a profile of the tread surface is formed by:
• an arc C1 that is disposed at a center in an axial direction, and that projects outward in the radial direction;
• and a pair of arcs C2 each of which is disposed outward of the arc C1 and each of which projects outward in the radial direction,
• the arc C1 contacts with the arcs C2,
• a radius R1 of curvature of the arc C1 is less than a radius R2 of curvature of each arc C2,
• a ratio (R2/R1) of the radius R2 of curvature to the radius R1 of curvature is greater than or equal to 1.1, and not greater than 1.3,
• outer ends of the rubber reinforcing layers are disposed outward of the ends of the tread surface in the radial direction,
• inner ends of the rubber reinforcing layers are disposed inward of the ends of the tread surface in the radial direction,
• the rubber reinforcing layers are not disposed on an equator plane,
• when h represents a height, in the radial direction, from the inner end of each rubber reinforcing layer to the outer end thereof, H represents a height, in the radial direction, from a base line to a point of intersection of the equator plane and an inner surface of the tire, hu represents a height, in the radial direction, from the end of the tread surface to the outer end of the rubber reinforcing layer, and hl represents a height, in the radial direction, from the inner end of the rubber reinforcing layer to the end of the tread surface,
• a ratio (h/H) of the height h to the height H is greater than or equal to 0.5, and not greater than 0.7,
• a ratio (hu/H) of the height hu to the height H is greater than or equal to 0.1, and not greater than 0.15, and
• a ratio (hl/H) of the height hl to the height H is greater than or equal to 0.4, and not greater than 0.6.