I just ran my Michelin Pilot Road 2's down the the cord. This is typically when I replace them in So Cal. 22328 Miles on them. That is the most mileage I have ever gotten from a set of tires. Over 135,000 miles on my 05 FJR. Bike is used primarily for commuting to the office. Attached are photos of the front and rear. Fronts look like they could keep going, no cupping at all.
https://s1224.photobucket.com/albums/ee375/Brydog153/
https://s1224.photobucket.com/albums/ee375/Brydog153/