The van came with a good set of tires
LUG PATTERN 8 X6.5
8.75 R16.5 LT
They have decent tread, the driver front looses a little air, enough to need to be filled about once a week.
So I will be looking at changing the tires, and perhaps the whole wheels to change from 16.5-inch rims to a more standard 17-inch (or 16-inch)