I found this forum by accident and am learning stuff i never thought i wanted to know. Im getting ready to build a spare tire holder for my off road landcruiser. The metal will be 2" square tubing. The weight it will be holding is a 100 pound rim and tire... Here is a rough picture. Any recommendations on how thick the metal should be? The hitch i believe is a class 2. Very rough pic. Now, im going to be doing hard 4 wheeling with this setup. So i need to make sure its not going to sheer off. Any tips on metal thickness??