Tire tread
FIG. 1 is a perspective view of a tire tread showing our new design it being understood that the pattern is repeated throughout the circumference thereof; 
     FIG. 2 is a front elevational view thereof; 
     FIG. 3 is a side elevational view thereof; and, 
     FIG. 4 is an enlarged fragmentary front view thereof. 
     In the drawings, the broken line showing of the tire sidewall and the solid line defining the peripheral boundary between the tire tread and the sidewall are for illustrative purposes only and form no part of the claimed design.