Vet, I like that approach, simple and effective plus you don't have to figure exactly where the center of pressure of the tire is. I am planning on weighing my plane again but as I don't want to drain the tanks it will be done with full tanks and then subtract the fuel, this will surely put it over the capacity of my scale. It is also a huge load off my mind to know I can do this using only addition and subtraction and avoid any complicated multiplying and ratios