Is your image that of a Conti Gatorskin? Looks just like mine so must be a Conti something. I don't bother rotating front to back. But maybe its more due to my laziness than anything else. The wear indicators are good. In general, I just replace them when the middle starts getting flat. It can be left on longer. However, I had multiple flats with screwed up tire casing the last time I did that. So not recommended.