I love these tires, especially in the wet... they are a little 'wobbly' less responsive than I expected... but comfortable.... they seem to be wearing faster than I thought they should... although I did just take a 3000km journey... (haven't driven it in snow yet- so ignore that)
I have had these on my van for about 18 months, replacing a set of Cooper CS4's. These Pirelli's have better handling, smoother ride and less road noise. Performance on snow & ice is acceptable given it's not a dedicated snow tire. I have had them rotated and inspected regularly and they exhibit less wear than other tires I have used. I will have P4 Four Season tires put on my SUV when the time comes.