I mean if we want to be technical, a super swamper in the same size range as a 395/85r20 xzl is around 170lb vs 190 ish for a xzl. Add a quality 20x12 I don’t see them being that far apart.
Really not that bad. As long as you don’t have runflats, the wheel tire combo is around 300lb plus adapters. Ad runflats and your closer to 580.
65lb wheels are really not a “stupid” amount. What do you think a set of American force dual lies weigh?
I’m not sure what manufacturer you’re using, and I can only compare cornpro 14 to 25k because that’s what I have. But my 25k is 2000 pounds heavier then the 14, and I can legally put over 10k more on the 25k. Trailer weighs in at 6800.