OK, I drove on these tyres from Nov 22 to May 23 - approx 5K. Have switched back to my Goodyear Efficient Grip Perf 2. Summer tyre simply superior in warmer conditions.
Had a chance to drive the 4seasons in dry, wet, snow and ice.
They are amazing in the wet, cutting through water really well, like a pair of scissors!
In the dry they handled better than I thought they would. All the corners I take at speed in my summer tyres were handled well by the 4seasons, certainly for everyday driving. Just felt like I was driving on foam when pushed hard.
Drove on side streets when covered in ice. Reversing and turning on a slope not good at all, tyres spun frantically. Didn't feel confident in the ice at all, although a voice in my head kept telling me they must be better than summer tyres!
Had a good few days of snow where I live this winter (Perthshire). Couldn't wait to try them out! Felt much better than summer tyres, no surprise there, and they did grip when turning a sharp corner, although sometimes it took a brief second for the grip to kick in. Was disappointed that when stopping at junction my ABS kicked in and juddered, failing to stop in time. Just as well no traffic coming the other way.
Overall, for general driving in winter I'm happy with them and in November will get them back on my car. Not sure I'd want to keep them on during a hot summer, too spongy.
I also experienced my first puncture with the 4seasons; 3 days after I bought them my front passenger tyre was completely flat. Maybe not as robust as I'd hoped.
I've owned a set of CrossClimate+ before and was happy to keep them on all year, not so the 4seasons.
I would buy again, but I'll definately consider Michelin CC2 next time.