I've had these tires on my car about 2 years now and have driven them thru 2 Michigan winters with lake effect snows. I have put about 30,000 miles on them and rotated them only once. They are still perfectly balanced and have half their tread left. I have to say, this is the first set of tires I've ever had that I can say that about after that many miles. Treadwear is very impressive.
As for handling and traction, I have been happy with that as well. It's pretty easy these days to find a tire that is good in 3 seasons for traction. These are no different in that category. They have excellent dry traction, are responsive, and very predictable when pushed hard. Wet traction is just as excellent. It starts getting a bit harder to find tires that excel in heavy rains. To get a tire with excellent resistance to hydroplaning, you quickly leave the lower quality tires behind. These most definitely fit into the upper realm of quality in the wet. I've tried and it's almost impossible to get these things to hydroplane or feel like they are overwhelmed by the water.
What is most impressive is the way they handle in light snow, slush, and ice. You really wouldn't think they would be all that great, but somehow they manage to be really good in light snow, pretty good and very predictable on ice, and excellent in slush. For deep snow, forget about it though. The tread just doesn't have any of the chunky blocks needed when the snow gets serious. Better to go with a winter tire for snows like that. We are currently 1 inch away from being in the top 10 snowiest winters ever in southern Michigan and these tires have done an amazing job this year. Even with only half the tread remaining, they haven't let me down. I think next winter I will probably get dedicated snow tires, but have no problem recommending these for snowy areas. If you want the best in quality and 4 season performance, these are hard to beat.