I have gotten 25kmi on two sets of 215/50r16s but they were showing bands (not wear bands) when I was done with them. I am at 15kmi on 205/55r16 and I think these will be much closer to 20kmi life.
Unfortunately these tires are really bad in their last 5-10kmi. Unbalancable vibration, uneven wear, etc. However the performance of the 215s in their first 10kmi was better than any other street tires I have ever driven.
I am not very happy with the 205s, 10mm is quite a difference.
