The ornamental design for a decorative vehiclepipetip, as shown and described.
FIG. 1 is a top perspective view of a decorative vehicle pipe tip showing my new design;
FIG. 2 is a front elevation of the decorative vehicle pipe tip of FIG. 1;
FIG. 3 is a right side elevation of the decorative vehicle pipe tip of FIG. 1, wherein a left side elevation is a mirror image of FIG. 3;
FIG. 4 is a top plan view of the decorative vehicle pipe tip of FIG. 1; and,
FIG. 5 is a bottom plan view of the decorative vehicle pipe tip of FIG. 1.
A rear elevation of the decorative vehicle pipe tip constitutes no part of the claimed design. In the drawings, the broken lines depict unclaimed subject matter only and form no part of the claimed design.