Light suspension and poorly balanced bumper hitch will end up with the tail wagging the dog (YouTube towing fails). Your load leveler is effectively doing the same thing a fifth wheel hitch does which is put the load over or in front of the rear axle. The problem with load levelers is they are trying to buckle the hitch/frame behind the axle, so as to say pushing the front of the truck down by using the hitch to lift the rear. Within limits all is fine and the rig drives nicely. To put a number on what a modified truck can safely tow would be hard to do. In my opinion the manufacturer numbers are probably not too overly cautious. Remember every manufacturer spends millions of $$$ on r&d to make the trucks we use do what they are supposed to, deviate from that and it's a crap shoot. (Of course by that logic we shoul all scrap our latg cars and buy c7 vettes, vipers or ford gts)
All that said if you want to maximize your load capacity fifth wheel is best and be very cautious (again towing fails)
|