Quote Originally Posted by SubaruNorway View Post
Why would you use snow chains if you already have winter tyres...?

Only trucks from south of Europe who are stupid enough to drive on summer tyres in Norway use that.
Winter tyres in a number of countries (including UK) just refers to a rubber compound that gives the same (or similar) level of grip at <5deg C on tarmac as a summer tyre would at >18. So on ice and compacted snow such a tyre is equally useless as a summer tyre. Not everyone has a set of studded black things in the garage!