The type of tyre can be instrumental...... I have a set of 37/12.50-20 Nitto Dune Grapplers off my 03 Durango that I want to fit on an 02 Duallie I'm looking at buying. They cleared on my 6" lifted Durango because they had rounded sidewalls but there's no way I could have got aggressive MTs on there with large knobly side lugs as they would have fouled on full lock no matter what offset wheel we used. Instead of lift I'm hoping for clearance by fitting a set of Fiberworx fenders. Have you considered changing the body ? What about a body lift ? I just don't want to alter the suspension after Ram spend so much developing it.