Jerry,
In addition to Soudguy's comments, another impotant factor is that generally Ag tires have a much lower load rating than comparable Industrial tires.
I have a NH TC33DA with turf tires and a loader. The Ag front tires have a load rating of 990# each, the Turfs at 1230# each, and the Industrials at 2000# each. For digging in and moving gravel and dirt the turfs were overloaded with the bucket full. This is with the rears loaded and a 550# box Blade for ballast. I have purchased a set of industrials for use during heavy loader work to get the full use of the loader capacity.
...Derek