I am running Nokian Hakka R3s on a BMW i3. I have had the tires for about 3 weeks now. The weather has been cold initially but has gone back to being very mild. This sort of weather is where dedicated winter tires can for want of a better expression slip up. Pleasingly the Hakka 3s are giving a level of grip well above my expectation in this mild and wet weather. In the dry too, this tire is performing more like an all season tire than a winter tire.
I deliberately put the pedal down on one occasion much harder than I would normally do and the tires started to lose grip. This however was the only time and it was a deliberate test. Otherwise on tight cornering and unexpected hard braking, the tires have performed admirably in both wet and dry conditions. In the cold weather they are even grippier and have given a preview of their winter capability. I can now confidently look forward to some harsh winter weather to see how they perform.
The other thing of note is that they are incredibly quiet and are head and shoulders above the summer Bridgestone
tires which are now off for the winter. I will revisit this review with my experiences in harsh winter weather but at present the Hakka 3 looks like a winner so far. Just be careful about pushing them too hard in mild and wet temperatures though.