The ornamental design for a foldable tailgateramp, as shown and described.
FIG. 1 is a perspective view of a foldable tailgate ramp showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 left side elevational view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of the foldable tailgate ramp in an unfolded position of use;
FIG. 9 is a perspective view of the foldable tailgate ramp in a partially folded position of use; and,
FIG. 10 is a perspective view of the foldable tailgate ramp in a completely folded position or use.
The broken lines showing a truck in FIGS. 8 through 10 are for the purpose of illustrating environmental structure and form no part of the claimed design.