hi
you can get the shrinko 180/60 16 for instance germany from
www.reifendirekt.de for 140 euro.
on ebay.com there are providers that sell the 180/60 and the 130/70 16 shrinko and sell it worldwide.
the set is cheap (220 US Dollar), but there is 100 Dollar extra for shipping.
I am sure there are much more possibilities to get this tire.
two points left:
1) I do not see that see that the smaler shinko 180/60 (compared to other 180/60) does fit in the paso without any modification. the two guys in this forum who uses these tires did make different modifcations (e.g., mike just grinted some of the tire sidewall away :-); popones worked with spacers
2) you can still get the shrinko 747 (180/60) that the two guys mentioned use. however, there is a new model called 757 now on the official skrinko webpage. does anyone know anything about differences or does anybody use this tire on a paso?
all the best hardo