The ornamental design for a tiresignholder, as shown and described.
My sign holder is characterized as a motorized vehicle tire, or portion thereof, with a cutout to receive a sign, poster or framed art.
FIG. 1 is a perspective view of a tire sign holder, showing my new design; the broken lines are for environmental purposes only and form no part of the claimed design;
FIG. 2 is a front elevation view thereof, with the rear elevation being the same; the broken lines are for illustrative purposes only and form no part of the claimed design;
FIG. 3 is a side elevation view thereof, with both side being the same; the broken lines are for environmental purposes only and form no part of the claimed design; and,
FIG. 4 is an additional side elevation view thereof.