Well they are 71 lbs in the 37" diameter
My toyos are 96lbs at 37" diameter!
25lbs more has to be a diesel guzzling difference
I am guessing that you are not comparing precisely the same tire (ply, etc...) tire for tire? If mileage matters most it appears you have demonstrated to yourself that the BFG's are the answer. Myself, I prefer the Toyo's and have been running them for many years with zero issue. These being 34" diameter tires so no clue on anything larger.
