MFOX, Hard to believe you have been a member of this forum since 2004 and you are asking a question like this. It is always all about the math. Use common sense first. a TT w/ a GVW of 7000 and a TT with a max tow of 7000 makes zero sense so don't waste time doing math when a simple 2 plus 2 equals 4 tells the story. And sorry, I am not a fan of the "if you can hook it up and make it move go for it crowd". Safety is always job #1. Folks with unsafe rig combo's should not be on the highway placing others in jeopardy.