I think we both learnt the hard way, replace them early.
Stay away from old Contis!
I changed mine after a very scary experience. Happy now with Vredesteins.
Me too but these new Michelin (and other similar ) Cross Climate compounds sound interesting Vredestein also do a cross climate
Finding winter tyres to replace 165/80 -15" Contis on a 4/4 won't be easy. It's not a very common size these days. On black ice I doubt any summer tyre would cope.
Glad it's superficial damage to the car Phil. I had Nero's backend skip out on damp cold roads a couple of days ago...makes one a tad cautious when the temperature is low!