Yokohama, 742S, 7.50R16s on generic 6.50x16 rims with the stock Jeep backspace.
I had 33 KO2s... and 33 MTs, and 35s for a bit.
These are quieter, way smoother running, lighter, and way less expensive plus rated to go 30% farther than BFG KO2s..... or any other AT/MT. So my tire costs are cut in half. Plus mileage, best was 17mpg with 33s, now I get 22mpg. I did all the ego trips with lifts and LT tires, But I swear by this combination. And I have not lost any capability. In winter these skinny tires out perform any wide, tall LT. The only place an LT Floatation tire might excel is in soft sand.... or mud, I avoid that kind of mud.
On the gas mileage bump thing, I was breathing fumes at 300km before, now I go 400km before the low fuel light comes on. I'll never go back. These are so old school they remind me of my first 4x4s in the 1970s.