If you are intending to ride
into Argentina they have made a change starting Jan 6th, 2013. We must now pay a reciprical tax of $160 USD online *_before_* entering.
To save you lots of hassle. Here is the link to the info page.
But under the log in you need to "sign in" to get the "entry code"
Or go to this link to fill in your info and get entry code then sign in and pay online. Print out payment receipt and take to border with you.
Pass along to all US, Canadian, or Australian riders in South America!!