[vectorit]

If I were you, I would not bother with the 16.5 wheels.
Look for a set of later model 16's, you will have more tire choices.

I am running 16.5's and pretty much the only choice for a tire is BFG AT's.
There are a couple other brands, but they are special order and may take a while to get. Even the BFG tires will have to be ordered, but being that it is a big name brand they usually have them the next day.