I really the Hutchinson as well and there one of the only DOT approved beadlock out there if that matters to you. But as Tank5 said there really heavy.
I allso like the Walker Evens Racing beadlocks and what I running on my 80. There all most half the cost of the Hutchinsons and much lighter...
A stock 80 wheel is zero offset and 41/2" back space on a 16×8" wheel and I see that's what your test wheel is.
Most 37 x12.50 x 16 tires have a tread width 10.50" to 11" and on the stock wheels they would rub on the frame at full stuff.
So whell I was looking for 17" I wanted a 31/2 to 33/4"...