The design consists of the features of shape, configuration and pattern of the tread of the tire shown in solid lines in the drawings. The stippled lines in the drawings are for illustrative purposes only and do not form part of the design.Fig. 1 is a perspective view of the tread of the tire in accordance with the present design;Fig. 2 is a front elevation view of the design of Fig. 1;Fig. 3 is a side view of the design of Fig. 1;Fig. 4 is a top plan view of the design of Fig. 1; andFig. 5 is an enlarged fragmentary front elevation view of the tread of the tire of Fig. 1, which is repeated throughout the circumference of the tire.