I went from P-rated tires to E LT tires on my F-150 (Falken Wildpeak AT/3W, which are similar to your BFGs). Lost 2-3 mpg and definitely lost some comfort. My F-150 rides the same as my F-350. Doesn't/didn't bother me one bit. But, just be aware that E rated LT tires on a 1/2 ton does have consequences.
Zero road noise. Definitely performs better on dirt roads, snow, and ice than my tamer P-rated tires.
Every time you use an apostrophe to make a word plural, a puppy dies.
TV: 2019 F-350 Lariat 4WD CCSB 6.7 PSD 3.55, 3,591 lb payload
Former RV: 2018 Rockwood Mini Lite 2504S
Former RV: 2007 Fleetwood/Coleman Utah
Former TV: 2005 F-150 King Ranch 4WD SCrew 5.4L Tow Package