The ornamental design for a vehicleroofrackclamper, as shown and described.
FIG. 1 is a rear-top left side perspective view of the vehicle roof rack clamper, showing my new design wherein the rear-top right side perspective views is a mirror image thereof;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a left side perspective view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a left-bottom plan view thereof;
FIG. 6 is a right-bottom plan view thereof;
FIG. 7 is a right-side bottom perspective view thereof; and,
FIG. 8 is a right-side bottom perspective view thereof.
The broken line showing of portions of the vehicle roof rack clamper is included for the purpose of illustrating environmental structure and forms no part of the claimed design.