Dunno about 17", but I think in the major cities you should be OK as long as you are happy with Pirellis!!
IIRR, the local economic community, MercoSur, has some sort of manufacturing deal with Pirelli and they were quite abundunt in the little of SA that we saw: Argentina and Chile (we saw a lot, but its still only two countries in a VERY big continent...).
Get yourself a list of matching Pirelli tyres for your rims and ask for those when you need to. Otherwise, if in places like Argentina, you can get folks like Javier and Sandra at Dakar Motos, in BA, to ship you tyres, but be sure you are within the same borders, as the taxes can be a killer..
Adventure: it's an experience, not a style!
(so ride what you like, but ride it somewhere new!)
Last edited by Warthog; 24 Jul 2008 at 08:29.
Reason: Because I got my wires crossed: should have been Pirelli, not Michelin!!