I did exactly this swap on my unit two summers ago, went with 215/85R16 as I was looking for more height to help level out my rig, if you want less height 225/75R16 is an option. I went with BFG commercial T/T tires and they have been good but don’t be afraid of other name brand highway rib tires, those just happen to be readily available to me at the time of purchase. I suspect that if you go with the r250’s or XPS ribs that they may prove to be a better tire but I’ve got zero complaints to date and mine have travelled around 25,000km’s up to now.