tanscrazydaisy, they have a snow traction symbol and usage suggestion. Here is a link to the Continental Site.
Continental marks DWS into their tread so as the tire wears it indicates what type of traction is still left. DWS...Dry, Wet, SNOW.
While these are not a dedicated winter tire they do perform very well. The original tire was the ProContact which was replaced with the Extreme and drove them for 100,000km and can say they performed very well in snow and ice, including a trip to Ottawa, London, Brantford in an Ice storms well into their life just as the S symbol was wearing away. I stayed on the road and had better control than the cars with dedicated winter tires. I now have the PureContact and find them a better in cold weather and on par with the Extremes on dry and wet in warmer weather. Based on the wear rating I expect to get about 110,000Km before I replace them. Also the PureContacts are quieter.
As I have said before these are an All Season Tire about as good as you can get All Season in the true sense of the term. Not a dedicated snow or Winter tire.
I have driven a Jetta Sportwagen with Dedicated Winter tires Conti ExtremeWinter Contact in a new condition. The little performance increase doesn't justify the change in IMHO. Now comparing it to the Michelins well jury's still out, but there is a difference in favor of the Michelin IceX3's.
As for my driving style....Spirited....would be best without getting myself in trouble.