I see you bought a rack... Just thought I would add that I found my Yakima Doubledown rack fit on the back on my Wrangler clearing its large spare tire.. I didn't think it would when we bought the car - but was pleasantly surprised.
Can't open the rear door with it on of course... But works great on back of Wrangler when towing as a toad... Holds up to 4 bikes on the version i have as they state it - 3 is more likely the reasonable max with handlebars, etc...
It locks in the receiver securely with provided hitch pin/screw combination - and locks (think the lock was separate)
Use it on the back of RV if not towing - and back of the Wrangler when towing...
Sample link: Amazon.com: Yakima DoubleDown 4-Bike Hitch Mount Rack: Sports & Outdoors
(I have no affiliation with Yakima... just use and like the product...)