The ornamental design for a tire, as shown and described.
FIG. 1 is the front elevational view of a tire, for which the other sides, include rear, top and bottom elevational views being identical thereto;
FIG. 2 is a left side elevational view thereof, the opposite side elevational view being identical thereto;
FIG. 3 is an enlarged fragmentary top elevational view thereof; and,
FIG. 4 is a perspective view of a tire showing the new design, it being understood that the pattern repeats uniformly throughout the circumference of the tread.