The question of the legality of a foreign tourist, entering a South American country with a tourist visa, on a foreign plated motorcycle with a TVIP (Temporary Vehicle Import Permit) and then leaving the motorcycle in the country when the foreign tourist exits might vary from country to country.

The question of enforcement is unpredictable.

I will need a few days to do a proper study and will publish the results here.
I will look at motorcycles with current TVIPs that will be exited from the country prior to the expiration of the TVIP.
We can assume that leaving the country on a motorcycle with an expired TVIP will be problematic.

Speaking from personal experience Argentina does not enforce any laws regulating a foreign tourist leaving a foreign plated motorcycle with a valid TVIP in Argentina, while the foreign tourist exits Argentina. But, the motorcycle must be exited by the foreign tourist prior to the expiration of the TVIP.

To wit: Argentine tourist visas are generally issued for three months, but Argentine TVIPs are issued for as many as eight months.
Logic dictates that the foreign tourist will exit and return to Argentina prior to the expiration of any TVIP issued for more than three months.

Note: If the foreign plated motorcycle is involved in an accident while the foreign tourist is out of the country, the foreign tourist will still be held responsible for damages.

Again, from personal experience rosa del desierto and I left our Argentine plated motorcycles in Colombia only after contacting the Colombian DIAN (customs) and jumping through a series of hoops that included - documenting the injury that necessitated our leaving the bikes behind, photographing the bikes and the "storage" where they will be parked, identifying and providing a photograph of the Colombian who was responsible for storing the bikes, having a *specialized paper etching made of the serial numbers of the bikes and signing a document of responsibility for the bikes.
This process took more than a week and required a medical doctor's signature verifying rosa's injury plus a frustrating wait for authorization from the DIAN.

*the Spanish word for the etching is "impronta," I think.

For all other South American countries, I will to do the research and report what I find here as I find it. This could take a while.

Thanks for the question, sorry I can't be more helpful at this time.

xfiltrate

__________________
Motorcycle Parking Buenos Aires, Argentina
www.xfiltrate.com
Discover how to legally Buy, Tour and Sell a motorcycle in Argentina