Wondering if someone can help me understand the overhang calculation that many countries have outside of the U.S. I understand the 60% of the wheelbase part but I'm confused on if anything attached to the back of the camper is part of that calculation or is it considered a "projected load". For example, lets say the finished camper comes in at the maximum length of the 60% calc without a spare tire. Now lets add a spare tire to the back. Does that put the truck over the limit or is the spare tire considered "projected load".