Wheel help with Quadrasteer

I'm trying to find 20" 8-lug wheels for my 04 XL 2500 with Quadasteer. I'm told the rear track is wider than non-quadsteer models so I'm nervous about buying wheels when the dealers are not sure if they stick out past the fenders or not. Has anyone put aftermarket wheels on a quadrasteer Yukon or truck? Thanks

Unfortunately you cannot change the rear wheels or tires at all on the Quadrasteers.

There is less than 1/2" of clearance back there at two points of contact. There are no aftermarket rims or tires available as of yet. When they do become available, they will be made to ONLY fit the Quads, and nothing else. Get ready to shell out the $$$$$.

Hope this helps.