Chris is absolutely correct. about 1.5" more toward the outside on the truck. Note the pic. Tires sticking out



This is why I listed the "bs". Wheel size and the BS is what (to some degree) limits or dictates tire size allowable. I liked these wheels even though they do not have the most desirable "bs". In my case (these wheels), I would have to lift the truck to get a tire any larger in width or diameter and they would stick out too far for my liking. 10.5 is as far as I think I am going. However, one could get fender flares and chop fenders. This is a better option in my opinion than rubbing steering components or frame rails.

I do not think 12.5 would fit. You "should" use a wider wheel for that tire size. Even if you could find a wider wheel with the correct "os/bs", I think they would rub.

Now, Mike's tires are most likely on the stock plane (same centerline as the original tire) where mine are about 1.5 outboard. - JL