I put Michelin Alpin (Tire Racks recommendation) on my R172 SLK55 - absolutely the worst winter tires ever! I had Blizzaks on my SLK 32, and a 2009 CTSV, and Perelli Winter Sports on my 2015 Mustang with the performance option 19" - all amazing winter and ice tires converting (even the SLK32) my rear drives into better than Jeep snow and ice performance. Last week we had a 1" snow in Minneapolis that was icy - may as well been driving with summer tires - scary! I'm having them taken off (a $1400 mistake) and replacing with Blizzaks - which are not an exact fit but close enough. I will never again take a website supplier 'recommendation' again.