No salt, the car has never seen a winter. It was one summer of driving and then washed waxed and covered until spring I took the cover off to charge the battery and I noticed the finish on the wheels. I took them off and brought them back to the dealer. I got my money back because they were...
The smallest tire for an F350 is a LT265/70Rx17E that was standard on all XL's Standard 4x4 for XLT's and Lariat's LT275/70Rx18E.
I pulled this info from the 06 ordering guide.
I had Eagle alloys on my Mustang in chrome for not even a year. They started to pit and flake at about 10 months. I will never buy another set of chrome Eagle's.