I claim the ornamental design for a tire, as shown and described.
FIG. 1 is a perspective view of a tire, the tread design being repeated uniformly around the circumference of the tire, as shown schematically in solid lines;
FIG. 2 is a partial side view of a first side of the tire;
FIG. 3 is a partial side view of a second side of the tire; and,
FIG. 4 is a partial front elevational view of the tire showing the repeating tread pattern.