We are super psyched about how the suspension upgrades turned out on our 4106 restoration project. It was a HUGE undertaking… but the coach rides and handles amazing!!! 
Though it wasn’t without some challenges, we were able to outfit a complete set of Michelin 315 80R22.5 tires mounted in Alcoa 9” aluminum wheels all around the coach! We are not sure how many other GM enthusiasts have tried that wheel and tire combo.
The next step is going to be getting all of the old electrical wiring repaired and working correctly.