That M1010 has rotted tires on it. It also has 4 tires, 3 with wheels, in the back. 2 are deuce wheels, 1 is for a 5 ton. THe other tire, not sure, but all together thats extra weight as well. 5 lug axles could be 3500 or 5000 lb axles. 6 lug could be 5000 or 5200. Brake drum diameter...