Tires for drive wheels of agricultural tractors or similar vehicles

A tire for drive wheels of agricultural tractors or similar vehicles having a tread with raised members which consist of large lugs spaced from one another and arranged in two rows each of which extends axially over approximately a different half of the tread, the lugs being alternately staggered in the circumferential direction of the tire and each consisting of two essentially rectilinear segments joined to one another and forming different angles with the circumferential direction of the tire, characterized by the fact that

• the tire comprises a radial carcass reinforcement whose meridian curvature, with the tire mounted on its rim and inflated normally but not flattened by a load, is at its maximum in the region of the shoulders of the tire and a tread reinforcement having an axial width at most equal to 0.9 times the axial width of the tire arranged radially outward around the radial carcass reinforcement and consisting of at least two plies having parallel cables in each ply which cross from one ply to the next forming about equal angles at the equator of less than 30.degree. with the circumferential direction of the tire, and
• the axially outward segment of the lugs projects axially from the corresponding edge of the tread reinforcement and forms an angle of from 85.degree. to 100.degree. with the circumferential direction of the tire and the axially inward segment of the lugs forms an angle less than 30.degree. with the circumferential direction of the tire about equal to the angles of the radially outward plies of the tread reinforcement, the axially inward segment, which is intended to touch the ground in the contact area of the tire before the axially outward segment, being connected to the axially outward segment by means of an intermediate segment, extending axially over a width equal to approximately 0.15 times the axial width of the tire.