on a '94 hi-lux 4x4, with no additional body lift done yet (it's already pretty high as it is), which would be a better option (would be used basically for some off-road terrain composed of usually dry "rocky" soil):

285/75R16 vs. 33X10.5X15 ?

the first one has a slightly wider footprint, but is the second one taller?
how much additional body lift should be done with these tires on?

also, if ever, where would these tires be available? regular shops usually carry only up to 265/70 or 31X tires.

thanks!