The ornamental design for a tire, as shown and described.
FIG. 1 is a side perspective view of a tire showing our new design, it being understood that the tread pattern is repeated throughout the circumference of the tire;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a side elevational view of the right side thereof; and,
FIG. 4 is a side elevational view of the left side thereof.