The first 2 years, the tires were awesome. Tires are now a little under 1/2 tread remaining and on their 4th winter and starting to show their age with decreased winter performance.
As soon as the tires hit the 1/2 mark last Fall, the first set of wear strips started making the tires noticeably noisier. It wasn't the tread, but the indicators that made them noisy. Since they don't owe me anything, I'll likely replace them before next winter. I actually drive them year-round, but I don't drive this vehicle a lot in the summer or on long trips.
Overall, these tires have been a great value for my purposes.