Ran these for four Newfoundland winters, putting roughly 70,000 km on them.
The sidewalls are cracked at this point, and my dealer suggested replacing them. This is a bit surprising, since they are an expensive tire! Treadwear was just average, although they wore evenly.
I did not find these to be all that great in wet weather (rain/slush) - they tended to hydroplane more easily than the Michelin LTX that were my summer tires. This was true even when new, with full tread depth.
In snow they were fine, no complaints.
Where these really shine is on dry cold pavement, where they are a very quiet and comfortable highway ride.
I'm going to try another brand this time, I need better wet weather performance.