The ornamental design for a pneumatictire, as shown and described.
FIG. 1 is a perspective view of a pneumatic tire showing my new design;
FIG. 2 is an front elevational view thereof; and,
FIG. 3 is a side view thereof.
The tread pattern is understood to repeat uniformly throughout the circumference of the tire. The dash-dot-dash lines delineating the claim boundaries and the broken lines depicting the unclaimed tire sidewall form no part of the claim.