In all honesty, pushing the wheel out with a 0 to -10 offset aftermarket wheel will more than likely solve your issue. I dont rub with my 255's on the stock wheels but they sit really damn tight to everything. 255's on my aftermarket that have a -10 offset are sitting perfect. You could always do a quick CMC to address it. That would cost less than buying new wheels for sure.
@Berserker__taco, thanks! Not really excited to do a CMC. I think I will increase my coilovers first and see how close that gets me. Oddly enough, now that the tires have settled, it isn't actually rubbing on the cab mount anymore. Just the plastic which I can heat up and mold. We'll see what happens when I add another 150 lbs. of rock sliders.
Offset will not solve your issue. The negative offset in this case is better as it creates a smaller wheel sweep radius and actually pulls the tire in giving you more turn with less actual area needed for the wheel to move through. Moving out to a 0 offset will move it away from the one area it is rubbing now, but it may still rub in other locations (unless you're lucky!) as you've now increased the sweep radius, making the tire move through more area than before. Moving to a negative offset will only make the issue even worse.
The real solve here is to increase the caster in your alignment. If you go to a shop familiar with offroad vehicles, they can do an alignment for you to push the caster forward just enough to clear. However, when pushing the tire forward you are going to encroach on the front fender liner which may make you rub there.
With these pizza cutter sizes, you should be able to get zero rub with a small caster adjustment and without trimming while using an OEM wheel.
I know this because I'm running these tires and have hairline rub under specific conditions on cab mount and front fender liner with a -7 offset. I'm planning to drop down to a 0 offset and couple it with a caster adjustment to see if it solves my rub issue.
My guess is, if you look at the space between your front tire and front fender liner while turning left to right, you have a decent amount of space up there left to push the caster forward and still clear while alleviating your rub issue on the cab mount.
Would love to hear your feedback on those resuls.
Just to note, some people have said 0 offest works fine, but others still have rub issues. It's really a truck-by-truck basis. However, I've seen more reports of success on stock +25 wheels than 0.