Fantastic Year Round Option
Let me start by saying my wife's GLC63 runs the scorpion version of these tires already and we've been nothing but impressed with the Weatheractive design. I figured the Cintuaro version would be likely just as good and I can happily report they are. Despite being mounted to 19" wheels, they're fairly smooth even over bumps which is great compared to the factory Michelin Pilot Sport 4's. They're a little more audible but I expected that given the tread design. It's really not obtrusive, just noticeable if you're paying attention to it. Dry grip is great for what they are, definitely not a performance tire but they still hold their own through corners. The winter grip is what's got my attention though. I've had a mix of slushy snow, dry snow, icy mix, and sub zero wet sticky snow over the past couple weeks. These haven't skipped a beat once. Seriously, the grip is great and communicate the conditions well through the wheel. I purposely pushed on them one night to see if I could break them loose intentionally; shocker, they broke loose, but it was a very linear type of grip loss. That's exceptional IMO because it gives you plenty of time to correct and recover as needed. TL;DR version? Just buy them. Seriously. You'll struggle to find another tire that can handle just about anything the weather can throw at it like this.