If it was closer to window and not vertical (followed contour of rear window it would look more in place. You made a lot of room under the cargo area. Did you fill it with speakers?
yeah.. I'm BillyGoat.... tires (like that) belong anywhere but the roof (unless you're rocking Moab or some place that's wide open), drag and noise is very noticeable and a wide tire like that, you're limited where to can park if you do enclosed parking lots.
I have a Thule cargo rack on my Tahoe and there's been a few places I had to avoid cause the rack was too high..my truck isn't even pimped out with a lift kit.... going off road with it, it's like a branch magnet, grabbing every other limb that's close by.