If you look at the tire was just to the wear bars. I was very hard on that tire trying to wear it out or break it! I have seen Ken's (zooker13) Hankook tire with over 25,000 miles on it and it had more rubber left then mine. I was amazed at how thick this tire still was when I removed it from the ST. Compared to a MT you could have got more miles out of it. After my experiance with MT showing cords with that amount of rubber on it when I left for a RTE up north I get just a little nervous so that is why I changed it out.
Not second guessing you. I was just wishing for times three than my average rear MC tire. It's just a whole different ball game with how these tires wear. I didn't throw away many rear MC tires that were "only" to the wear bars. Usually they were through them into the cord before I trashed them.