Quote:
I expect the wheels are not rated for winter, summer, AT, M&S, etc. :-)

Which tires are they?



These are 100% winter tires, named Continental 4x4 WinterContact, V speed rating (approved up to 240 kph), 110V weight rating too.
Recommended especially for regions with not so much snow because the tire size might pose a problem when braking.
In regions with more snow, the 275/40 R20 is recommended but this is not a Conti tire but a Pirelli as far as I remember.

HERE is an english description of the Continental WinterContact.