First time I weighed the rig, I weighed each axle cumulatively on a commercial scale. So subtracting each successive axle gave me the weight of each axle. I have since had each tire position weighed when I went to a rally. The first time we weighed, it gave us a good idea of what we were pulling. The second time we weighed, we have an exact idea of both axle weight and side to side distribution of that weight.