The Tepui Ayer is one of the smallest closed footprint RTTs I've found

Size (Closed) 48" X 42" X 11" (WxLxH)
Size (Open) 48" X 84" X 39" (WxLxH).

I am also looking at the Cascadia Mt. Bailey because it is a bit bigger for my 6'3" frame

Size: 48"W x 96"L x 45"Ht. (Open) Actual sleeping footprint
Size: 48"W x 48"L x 15.5" Ht. (Closed)

Both weigh 95 pounds per se, which meets the 110lb dynamic weight rating of the VX roof racks. Keeping bedding inside, plus exterior lights, CB antenna, etc will add bits & weights to that to test the rating limit.

Based on the VX RTT sites I've seen/posted, the static weight of two people sleeping in one has been proven, and for me it only needs to support one, so I am confident with going forward with one of the units mentioned here.

I was hoping for space for the AutoHome Columbus because setup would be 30 seconds vs. ??? minutes to setup one of these soft-siders. (I've seen mention of around 7 minutes, which is no biggie unless the weather sucks. The hard shell is way more aerodynamic and will last decades in the elements as well...this is a rather permanent addition to my VX because I don't have storage to take it off! :P

-Doug