To improve installing performance with a wheel rim by forming an opening hollow part in a segment composed of a rubber elastic body installed in order on an outer peripheral surface of the wheel rim, and inserting an installing metal fitting with the wheel rim into this hollow part from an opening part.

Rubber elastic body segments S installed in a wheel rim for an off-road vehicle and a caterpillar belt (hereinafter referred to as a wheel rim, are juxtaposed at a right angle in the circumferential direction to the wheel rim, and are installed in large numbers by an installing metal fitting 10, and are composed of a hollow part 1 arranged in the center, a bottom surface part 2, a top surface part 3 and side surface parts 4 and 5. The installing metal fitting 10 is composed of an expanding part 11 and a bolt 12 as an installing means when the wheel rim is installed. This installing metal fitting 10 is inserted into the hollow part 1, the bolt 12 is inserted into an idle hole 6, and the bottom surface part 2 of the segments S is fixed so as to be pressed down by the expanding part 11 by being screw-fitted by a nut from the inside of the wheel rim.