Thank you mapguy. The only thing I have been interested in is to have a safe wheel and stay within the TT GVW and all other specs on the TT. Since I was told the 8 lug was ok to use on the existing axle, that is what I have done. I do not believe I have been overloaded. After traveling the 8000 miles loaded the axles and frame are all fine. Just the wheels were the issue. I do appreciate the info you linked me to. I have been across a number of scales and have tickets to show weights. All seemed within the 5200 lb.axle limits or right at the GVW.I have not bee trying to make the TT a 7000 lb. axle. Going from a 2600 lb. wheel to a 3500 lb wheel solved the problem.