**** 17s prices! Prices for a 17in rim on a 37 is DRASTICALLY more expensive in a 17 compared to a 16. For example, Tirerack.com 365/75r16 KM2 (38x14.5x16) 372 a tire 38x14.5x17 KM2 532 a tire.
Interco the price is nearly the same between a 16 and 17 but the price difference between 15 and 16 is drastic.
Im gonna probably stick with 16s. I wouldnt mind 16.5 rims and military tires but I refuse to run them for one reason, WEIGHT. Weight hanging off your axles KILLS parts. My brother is running a 345/75r16 KM2 and aluminum rims weighing in at 102 lbs a tire/rim combo. I have not found an exact weight on the military tires some sites say 83 some say 115lbs. Who knows. On pirate they say a military surplus tire/rim combo is close to 150 lbs. 150 lbs is a lot of tire to carrying around on the front diff. That poor little turd couldnt hang with my POS 64lb duratracs on 20lb stock rims.
If I had a dana 60 and a 14 bolt then hell I would run the heaviest tires and not give a crap.
If you wanna keep stock rims look into the trxus MT, Irok radial, Maxxis creepy crawler, 345/75r16 KM2, 365/75r16 KM2, 385/75r16 Mud Grappler 395/70r16 Baja MTZ by mickey thompson. All those tires are 37s/38s and lighter. Honestly having a 16 in rim is a huge disservice, options are limited but I like the 16s and for now I will keep em. My next set will be a 37/38in tire and I am not concerned one bit, I have the strength to run em and the gearing to run em. Derian atleast you have a V8. I would look into a superchips tuner and do the 91 or 93 octane tune. My brothers superchips livened up his jeep. You do mud right? That is less stressful then rocks.