Could someone please explain the pizza cutter theory? They do look cool as hell but a wider tire provides a wider contact patch right? wider contact patch should equal better traction + added floatation. Look at those artic trucks they disperse there load out as much as possible to stay on top of stuff.
You either want to try and "float" on top of the surface you are riding on, or have a narrow skinny tire that can dig deep enough to hit firm ground. Or have a tire that is somewhere in between.
At least that is what i was always told growing up
I have wheeled with the Super Swampers in the rocks and they are terrific. Bias ply so the side walls are tough as nails against the rocks.