I have the Thule Spare Me spare tire rack for my 2011 JK 2dr, and I absolutely love it! I have made multiple trips back and forth to Oklahoma from Michigan, and that rack has stayed very solid for my bike! It is a bit price, but I love the mounting location and it is a very solid construction! You can also add on the ski rack to the bike rack, unfortunately for an additional cost, but once again, very solid! I also love how secure everything is with it as the rack, both ski and bike and to the rack to the tire itself, all have keyed locks to secure the rack to the tire and a lock to go around the bike to secure it and to lock the skis to the rack as well! And, you don't have to take the bike off to gain access to the truck area, you can open the tailgate with the bike attached! And it is adjustable for multiple tire sizes too! I think this is one of the best options for the JK's! Check out my post on this rack on my build page for more info on it here, posts 10 and 12:
http://wayalife.com/showthread.php?30999-WxNerd2015-s-Never-Ending-Build