We have the original tires that came with our trailer still on. We have approx 19,000 kms on them now (includes the trip from factory to dealership) and they look as good now as when we picked up the trailer in May.
We will post a pic of them when we get our trailer back from servicing.
How are everyone else's tires doing? If you have changed them, what tire did you have installed? How are they holding up?
We will most likely have to change ours out sometime this winter during our snowbird road trip (another 14,000 kms).