My husband and I are currently in Ubon Ratchathani, making our way to Chiang Mai. We're riding new Honda XR 125s with Vietnamese plates, brought to Thailand on a 30-day temporary import. All the paperwork is in the name of the seller (Cuong's motorbikes in Hanoi) and we have a bill of sale and receipt showing we own the bikes. It was no problem to cross Vietnam to Laos and Laos to Thailand. We are looking to sell the bikes in Chiang Mai, but we are not sure if that's allowed since they are here on temporary import. The paperwork we received from Thai customs says that if we don't export them by the 30-day mark, we face fines of almost $1000 per bike, which we'd really like to avoid. However, we've read that it's possible but that the seller and buyer need to go to customs (or the border) together to sort it out. We've also heard that immigration and customs "don't talk to each other" - in other words, if we leave Thailand via plane, there's nothing in our immigration papers, stamps, or files to indicate we imported bikes, so they'd never know. That seems like an awfully big risk to take. Does any have intel on this?