I'm not trying to be lazy or cheap. I just look at the fact that it is all 1/4" wall steel tube. I don't know how much it will take to bend it, but I think that it will take a bigger hit than the truck frame will handle. The ends are only 12" long and somewhat close to the tires in my view, so I don't know how much momentum could happen from the tire to the tube.
But even if I put a tube out to the ends, it would only be hooked to a piece of flat plate at the end of the mounting plate, and it would have to be firmly bolted to the truck to install it. The plates bow out slightly unless bolted to the truck frame.
FWIW- My bumper wraps around like yours and I don't have anything supporting those legs. I haven't had any problems and neither did the PO of the bumper and it's seen plenty of action. My front tube bumper is another story however, I need to fix that still.






