Storming through and finding many threads on tires for the back of these things led to me to a couple different tires as my top choices. The Bridgestone BT014 150/60/18 and the Avon AV56 150/70/18.
I was really wanting to try the Avon since it seemed to be highly recommended, but no luck in finding one. It seems as though they discontinued that size when then switched to the AV56 Storm 2 series.

I can't seem to locate a BT014 either....
Please tell me where to find one of these(preferably Avon) as I don't want to have to resort to using a Shinko Podium if I can help it.
I would do the swingarm swap for a better choice in tires...but I'm not so sure I'll be keeping this bike long enough to make the swap worth my time.
Thanks!