There's been lots of discussion at work lately regarding wheels and tires for this thing. The current setup has Delta Trailcutter AT 4S tires, 31x10.5R15. I don't know the specs on the wheels. I'll measure next time I pull one off (safe to say wider and more offset than stock. The current 15" barely clears the rear drum brakes! The spare is a different size, 265/70-16. The rolling diameters aren't far off, so it would probably work if needed in a pinch. I like the all-around tread design that isn't too noisy on the street. I'll be honest, and say that I'm happy to give up some traction in gnarly off-road situations I will likely encounter only now and again for a bit more peace and quiet on the slab which I will be dealing with more often.
Issues as I see it:
-The current mismatched sizes become a potential problem once I upgrade to something other than an open rear differential. Also not ideal for a five-tire rotation.
-I don't love the chrome/polished finish. I don't hate the general bullet-hole/phone-dial style of the wheels, but I'd prefer a different finish. Some have suggested that they are "Boomer-spec Jeep wheels." 🤣
-I'm not lacking for footprint. I've almost never broken traction outside of two instances, one while dumping the clutch on gravel with revs up in first gear, and once while stomping on the brakes hard at low speed on soaking wet asphalt during a downpour. Both were a 'chirp' for a fraction of a second. I could use a rotating weight reduction. Lighter weight would help me here. Narrower would also help pep it up with slightly reduced rolling resistance.
-Current and future tall/skinny AT tire availability looks better for 16" than 15"
My coworkers are all more experienced at this stuff than me, even if it is 80's/90's G-Wagens, Jeeps, or Tacomas instead of Landcruisers. I've also asked a few of our local-ish dealers who do a lot of 70-Series Toyota stuff. The consensus is tall and skinny tires are the way to go. The wide steamroller brodozer crap is just that.
There seems to be lots of tire selection in 235/85-16. The 31" diameter is pretty good.Slightly taller by an inch or less wouldn't hurt (I don't think.)
I'm leaning towards a forged JDM five or six-spoke alloy like Volk TE37XT, or 4x4 Engineering Bradley V Takumi. This should give the right restomod look with a performance boost. Not cheap, so the purchase will likely have to wait. The finish I have in mind is gold or a lighter bronze.
I'm still a relative n00b at this stuff, so I'm open to suggestions or comments.