No, they are about the same as tlt's with wideners. Britt's truck has gmade wideners and it is only 10.25" outside of tire to outside of tire. Let me go dig up a link that shows the two next to each other.
Pic
Another way to do it, is to run shallow offset wheels, like I do on my truck. You can be up to 12.5" wide in the 2.2 class. That is outside of tire to outside of tire.