I have never heard anyone complain about one. The ST Owners forum is full of 100,000 mile examples and I have 2 close friends that each had one for years. Stable, comfortable, stone reliable, and great handling. I have the ST1300 and love it, but folks tell me the 1100's are easier to ride and more stable due to 2" more in length. If taken care of, he's going to get a lot of trouble free miles.
Gordon