Originally, the tire was a 612, sold exclusively by Discount Tire for around $70. I still have one more new one left in my own stock. That model was discontinued and replaced by the ZE-912. Here is one of many links to it:
http://www.ebay.com/itm/NEW-TIRE-195...-/252476664909
As I have mentioned previously, I originally found this tire being used by Yellow Wolf and friends, some of the fastest Gold Wing riders in Western NC. For super-aggressive riders, this tire doesn't last all that long (mainly due to edge wear) but the performance and feel in wet or dry conditions is unbeatable, in my experience. The fact that this tire is not symmetrical is a non-factor since it goes left or right equally well. So, in summary, this tire would be for someone looking more for performance in any conditions than uber-long tread life.