Abstract: The tread of a tire has an on-road pattern formed in its central area and including traction grooves. An off-road pattern is provided at each side of the tread central area, as formed on each tire shoulder. The off-road pattern has lugs and an annular wing adjacent to a curved recessed portion and is positioned radially inward from the bottom of the traction grooves so as to be held out of contact with the surface of the road during on-road operation. The on-road pattern is immersed in off-road terrain with the off-road pattern in contact with the surface of the terrain over an increased area to effectively engage mud, sand or the like.

Abstract: A tubeless pneumatic tire comprising a body made entirely of an elastic material and cords embedded in the body and having a length not extending from bead to bead. The opposite ends of the cords are disposed in a pair of annular projections formed on the inner surface of the tire and centered about the axis of rotation of the tire. An elastic deformable portion is provided between each of the beads and the corresponding ends of the cords.

Abstract: A cavity having the shape of the tire to be produced is defined by a mold comprising an upper element, a lower element and a core element which are fittable to and releasable from one another. The core mold element comprises three divided segments, i.e., a segment for forming the inner surface of the tire tread, and a pair of segments for forming the inner surfaces of the tire sidewalls including tire beads. The core mold element has two pairs of nipping portions for holding the opposite ends of tire cords placed on the tread inner surface forming segment. The nipping portions in each pair are movable toward or away from each other. The tire cords nipped at their opposite ends by the core mold element are held in place within the cavity by the cooperation of the upper and lower mold elements, and a molding material composed of rubber or an equivalently elastic material is filled into the cavity and cured.