Since I first came here in 1978 in Mexico, I have heard of only two larger bikes of visiting riders being stolen. Maybe times are changing, but bike theft is the least of my worries and ride here almost everyday. Modern large bikes like a GS are not so criminal friendly. Vandalism, tip overs, and drunks wanting money for watching it for you are the most worriesome problems. Secure lock ups are available for almost any level of hotel. The hotel owner will likely help you if you are stuck and offer up a hallway or space of some sort or find you something usually within a block radius or so. There just isn't a huge market for stolen bikes or stolen bike parts here. Just don't leave your key in it. There was a bike jacking the other day in Mexico City, large capacity bike taken by two guys by force from the rider, and it was found within a day, just dumped in a field, no real damage. Small capacity pizza bikes, scooters, etc... are the most stolen bikes. Don't get careless with your GPS or other attachments and your gear. The contents of a tank bag or an open pannier are simply temptations. Same goes for a helmet and gloves or a jacket draped over the bike. I have known guys who never worried about any of their gear and made it to Tierra del Fuego without a theft, and I know others that have had a helmet stolen at a corner OXXO store. Worry less, ride more, carry bike and health insurance and enjoy yourself.