Most 285 tires wont work well on a 9" front. Some do. The PP wheels are barely wider at only 0.5" difference. Im not sure what ford was thinking. They arent the greatest wheels for performance, too narrow even at 9.5" and too heavy too. I guess they're pretty tough tho.Seems like it would be hard on the tires to have them mounted and removed so many times, wouldn't it?
This also brings up another question? Why are the rear wheels wider if the fronts can accommodate a tire the same size? As I understand it you can go as high as 285 all around on the factory PP wheels.