Correct! 285/70R18 will be a tight squeeze in the spare tire well but can likely work with, a little deflating like you said.So much info in the forum so looking for confirmation on what I’ve read. I’m at 21k in stock tires and it’s time to replace them. ‘24 OT no lift/mods. Sounds like the largest tire that would fit are 285/70 18s. It should fit the spare tire well, barely, might need to deflate a little. Otherwise, 275/70 18s will for sure fit and are a slight upgrade over OEM. Correct?
Now to pick the tire itself- Nittto TG G3, Toyo AT3, wild peak AT4, or a new one I haven’t seen anyone mention Continental Terraincontact a/t. I don’t do any winter driving down here in GA and only off roading is the hunting trail in/out (minimal). 90% is country road driving.
IMO:
1st place - Toyo A/T III
2nd place - Nitto Terra grappler G3
3rd place - Falken Wildpeak A/T4W
Nothing wrong with any of the 3 but the Toyos consistently require the least weight to balance and are the closest to perfectly round of any A/T tire I've seen. The Nittos are very close in balance and runout but I prefer the tread design of the Toyos. The Falkens, a bit more aggressive than the Nittos but with the price being as close to the Toyos are they are, the Toyo wins in my mind every time.