The tires are BFG All Terrains 265/75r16 mounted on American Racing AR172 Baja 16x8" wheels with 4.5" backspace and 0mm offset.
I do have plans to take the running boards off but haven't gotten around to it yet. The tires don't rub the running boards so it didn't make the list of immediate concerns before our first trip in a few days.
Now to answer the "What is the max sire tire a 2wd will fit?" question. Some people say 265/75r16s fit fine, other say they don't. Some are comfortable with a little bit of trimming while others are not. Having tried to stuff big tires under other vehicles before I can say there is definitely a varying level of comfort when it comes to trimming. Hopefully this helps some people understand what may be required to fit this size.
The rear tires fit fine but I wouldn't be comfortable going much wider without spacing them out a bit. They may start to get a little close to the inner wheel well.
Before
After
The front got a little trickier. I had to trim a very slight amount from the lower bumper plastic. The area in question is when the plastic curls back under the vehicle so I did this pretty half assed since no one will see it and plastic doesn't rust.
And here it is in relation to the tire.
The pinch weld also needed a bit of trimming. You can peel up the wheel well liner and put it back down when you're done trimming. This is what I cut off.
Sometimes I find it easier to use a hand tool than find an extension cord.
And here is the tire installed with the wheel well liner back in place. It's still very close but the wheel liner is sticking out a little further than the actual pinch weld. If it were to rub it would just rub on the plastic and push it back a bit. So far I haven't been able to hear any rubbing and haven't been able to see any marks on the liner. I also used a hammer to gently tap back the actual fender. It's very slight and perhaps wasn't necessary but if nothing else folding the tab back in a bit helped hold the liner tighter. Also of note is the running boards do not interfere with the tires at all. As the wheel arcs the running boards are outboard enough that it's a not issue.
Before
After
If your comfortable with a very minor amount of trimming of non cosmetic areas I would say 265/75r16s fit without a doubt.