Yep, people put 35" tires on something like that and then abuse it and wonder why it broke.

For something street driven like the build I'm talking about I'd probably run 35" tires since they're more common, maybe 37" tires now that they're popular. I'd pick something that you could find a spare for in any small or medium sized town on short notice and I'd still carry two spares anyways.

For my last few 4x4s I've carried two full sized spares and just rotated them in and out of use so they wear evenly and so that I don't end up with a nice looking spare that is dry rotted from being in the sun and never being used.

Believe it or not, using locking differentials helps reduce breakage too since it spreads power and traction out more evenly and reduces "shock loading" as well, which is what usually causes breakage in stuff like that.
Not saying I'd spend $1,000 on an ARB air locker or Eaton E-locker for a wimpy factory differential though.