Given
94%
while driving a
Subaru Legacy
(225/50 R17) on
a combination of roads
for 5,000
spirited miles
These tires blew me away. In my opinion, they are best for 'cooler' winter climates (-30C to 0C), although they still work completely acceptably above freezing (they just soften up a bit and seem a bit noisier). Their second strength is wet, especially things like puddles and slush or damp roads.
The snow and ice performance was good - much better than an excellent all-season, and even slightly better than some mid-range snows, but these weren't exceptional in deeper snow (they were better in packed snow than fluffy snow) or ice. But not bad at all.
But when you are on very cold roads, or in slushy environments or with plentiful puddles of salty water (likely super-cooled), these tires actually let you drive like on a summer day. I'm not kidding. I'm so happy with these. If you live in a city and don't do too much commuting to the back country, and live somewhere where it can get fairly cool, and the roads get reasonably plowed within a few hours to a day, and you if you like spirited driving in the winter, these are positively joyous.
Strangely, tire wire (at least for the first season) is almost undetectable, and the ride was very nice, and no noisier than my stock all-seasons (however, my stock all-seasons are a bit on the noisier side, so its a relative comparison). I honestly hope they don't mess with this formula at all, because I will definitely buy this again.