I did not. I wanted 20's this time around and the NV was not available in the HD with 20's. The load rating is 3640.
I'll be honest, not sure what factory 20" load rating is. I had method double standards on my 13 2500 with same load rating in 18" and it served me well.
Tires are 35x12.50/20 Nitto Ridge Grapplers. So far I like them. I was not prepared for the amount of crap these would throw on the truck. I can live with that, but after spending the weekend at a ski resort with nothing but gravel roads on the premises I now have several rock chips on my flares...just above the xpel line