This ornamental design for a fronttire, as shown and described.
FIG. 1 is a front perspective view of a tire, showing our new design, it being understood that the tread pattern is repeated throughout the circumference of the tire, the back perspective view being a mirror image of the front perspective view shown;
FIG. 2 is a right side view thereof;
FIG. 3 is a front view thereof, with the rear view being a mirror image of the front view; and,
FIG. 4 is left side view thereof.
The portions depicted in broken lines of uneven length define the unclaimed boundary of the claimed design. The portions in broken lines of even length depict portions of the tire that form no part of the claimed design.