I just put a set of Falken WILDPEAK A/T3W, LT235/75r15, tires on my 1996 Geo Tracker, for summer time off road use. I run in alot of sharp lava rock, and wanted something with strong, stiff sidewalls.
It's the only 15" tire, I know of, that is load rated 10 ply/E/80 psi. Hard ride off road, but I don't think any worries about sidewall punctures. Each tire is rated at 2755 max load.....that is more than the whole rig, loaded, weighs!
Andy3
