We sell them, living in the mountain range we do, the roads are average, so normal wear goes out the window. Our customers probably get on average 40k km out of them, id probably expect someone living in the city or urban areas to get a fair bit more out of them, probably upwards of 50k km.
Just make sure you keep good pressure in them, make sure your alignment is good and have them rotated and balanced every 10k km (mainly so any problems with alignment can be picked up early). The are a very closed tread with chamfered edges, the compound contains silica, so it provides pretty good wear resistance while offering good levels of grip in the wet and dry.
For the price, the toyos are probably the best tyre in the 205/65R15 bracket imho.
you can read about them here if you want
Technical Information Issue # 11