Eight years ago my wife and I went to Thailand and rode on 2 three day motorcycle rides out of Chiang Mai in northern Thailand. It was wonderful. I highly recommend. Over there traffic does not seem to have many rules so you have to be constantly vigilant.
We went with Big Bike Tours (bigbiketours.com) and the tour leaders where great. We combined the tours with travel around Thailand on our own. Thailand is very scenic and the people friendly. I recommend Rick Steves’ book (ricksteves.com).
A funny story. Rick Steves pointed out that in Bangkok there are scammers that try to get you to take a tuk-tuk to somewhere else by telling you that the temple is closed. There is a sign in English at the entrance to the main temple that says “Beware of the Wiley Stranger who will tell you the temple is closed” Sure enough, when we arrived, there was a middle aged well dressed man that tried the scheme of us. We met the Wiley Stranger!