New 19.5 Vision wheels and tires

I emailed Alcoa and never got a response with codes on rims and researched the 17 x 8 forged aluminum wheels that were in original upgrade package on the lot. Some folks on cummins and dodge forums thought they were rated at least 3400 lbs. Alcoa who supplied some Dodge trucks like the power wagons were rated at 3750lbs. I could not confirm this so i upgraded to 19.5 visions rated at 4500 lbs.