Squeezed out 2 years and 20K miles on these things with a few track days and driving to / from Florida to end of Nova Scotia on road trips with these things. Plenty of tread left on the fronts and approaching the wear bars in the rear. The tire place was shocked I was changing them out already given how expensive they were but I didn't trust the rears for another driving season if I get caught in any rain.
Thought about going with the new Pilot Sport 4's but decided to stick with the OEM for the GT4 and just got all 4 corners mounted this week.
I'm sure if you do 10 track days a year or donuts in a parking lot these would wear out faster but frankly I'm shocked at how long they lasted for me. I was expecting under 8K miles.