My front tire is close to wearing out (on the left side of the tire) at about 11k miles. Maybe I can push it another 1-2k miles before the wear bar is flush with the thread.
Back tire has about 8k miles on it and seems to have plenty of thread left albeit it has been flattening out due to highway riding.
Overall really happy with the stock Michelin tires. They performed exceptionally on my trip to Alaska (rain, gravel, etc).