Yes, school busses sometimes run 9R22.5 tires, also a lot of medium sized RV's do.
School bus axles are a lot to wide. The problem you run into with narrowing a really wide axle to fit an AD truck is the distance from the king pin to the spring pad can be to much. So you narrow the center considering the track with, and then the spring pads end up being a lot to narrow, and you don't have room to stretch them out any.
The Chevy 3500HD (just stronger than a 1 ton) has an I beam front axle almost the same as the P30, they use most of the same parts. This is the axle I used for my front, a 1994 model, but I would use a P30 if I do it again, the measurements work about a little better, and the steering is different, could probably use the stock manual box if needed.
An independent front axle truck is a whole different box of worms, I don't like that idea, and don't have any suggestions on that kind of swap.
I have a P30 front axle
http://good-times.webshots.com/photo/2024492560080251109VNDanJWhen I run out of things to do for my truck I will narrow it to replace the one I have, and change the steering around a little bit. This time I will narrow it just enough to fit the wheels in the fenders and look good. I think I may have narrowed the first one about 1.5" more than I should have.... I only had the 1 ton at he time, and was under the impression that the track width was identical to a 2 ton, which it is not.
Grigg
