OK I just finished my heavy duty bumper install, the tubing I used was 90lbs + the original bumper welded under it " for the poop tube" + the hitch rack + I stacked 200lbs on it, my bikes only weigh 40lb.
with nothing on the back " no bumper at all" loaded to camp + an extra battery on the tongue except no water " my tank is in the front " my tongue weight was 820lb.
with my heavy bumper and everything on it, it unloaded the tongue from 820 to 700lb
I am super happy with it, was a little surprised at the tongue weight advertised at 575, so taking some off is a plus.
Now with a full tank of water I expect it to be very close to 800+.
Dar