Rated at 1 ton, I've had at Least 2 tons of river cobbles on this truck more than once and it had to climb out of a river bed with those loads. It was sitting well on the overload springs. I put it down in Granny Low at little more than a fast idle (maybe 2500 rpm) and it simply crawled up the river bank and out of the canyon. It was slow but it never faltered. This is One Tough Truck!