Silverado kid:
I should probably add (better late than never :B) the information that I had aftermarket wheels installed on my 2003 Chevy dually soon after purchasing.
This may /or may not have slightly changed the spacing between the duals.
Still ran the factory 215/85R16 tires. I purchased the wheels through the Tires Plus store in Minot ND. At that time (2003) there were only two available mag wheel choices, Alcoa and I believe American Racing Wheels. I got the American wheels, although on hindsight I wish I had gotten the Alcoa's. ( darn American wheels were a chore to check pressure on the inside wheel due to the smaller openings in the outer wheel).
I ran factory Goodyear tires, until they decided to crack all the way around the bead in front. Replaced with Michelins same as yours and had no problems with rubbing in back with a 3000 pound pin weight fifth wheel in tow.
