Also, most of the 5200 extra pounds are very low on this vehicle--just because they are at or just above the axil does not mean it makes it tip easier. If it did, ever car and truck on the highway would flip over at the first rush of wind. The weight has to be above the center of gravity to make it unstable, not just above the axil, does it not?
Not exactly, the center of gravity must be beyond the operational horizontal plane to tip a vehicle if I remember physics 101 correctly.