also having this dilemma. I’d like bigger tires on OBX 18” wheels. I think I could fit 275/70r18. The stock P rated tires are 41 lbs.I'm building similar to your build. One thing everyone should consider regarding swapping tires on the base (or any model) is the weight of the upgraded tire. I'm looking at BFG K02s in 2 sizes, LT235/85 R16 and LT265/75 R16. The 235s weigh 48 Lbs; the 265s weigh 53 Lbs. The stock tires weigh 37 Lbs. While that looks like a significant weight increase, I looked at the tires on the BD (26570 R17). Those are not E load range - they are SL. Those weigh 44 Lbs. I'm thinking the BD axles and base axles, brakes, etc are the same. The 17" wheels on the BD weigh about 6 Lbs more than the 16" base wheels. The tire weight gain of the KO2s shouldn't matter given the BD tire/wheel combination is pretty close. I understand going to a E load range tire will give a stiffer ride, but that's something I'm willing to accept for the slightly larger and better A/T tires over a passenger all season tire. My concern was to not add additional unsprung weight. Let me know if I'm missing something here.
Im stuck in E load land. I’m in between Toyo AT3s which are the lightest of the group at 49 lbs (but heard they are noisy at highway speeds). Next best tire is Cooper AT3 XLT which is resoundingly quiet and comfortable for an E, but those weigh in at 57 lbs. So that’s 16 lbs more per corner. How concerned should I be? That’s a big difference. Although I see Ranger guys and others choosing this tire so not sure what to think.The diameter goes from a 32.1 to a 33.2 so on paper it shouldn’t hit MPGs too hard, but I have no idea what to think about the added weight.
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