From having driven my 300SD through now 10 michigan winters, I can see AWD is pointless vs. real good snow tires. Considering the 300SD has an open diff, its amazing. I have never gotten stuck with it, and I have driven through some crazy stuff! I attribute it to: snow tires, weight of the vehicle, and ground clearance/suspension of the vehicle.

With a limited slip or lockable diff it would truly make the 300SD unstoppable in most conditions. This past winter I had people who would over confidently follow me through snowy curves in their non-snow tire equipped vehicles, only to spin out and crash in my rear view mirror. As well as when I was following people and they would spin/slide off the road ahead of me, and I drove right on through with 0 issues.


Our 300E doesn't have snow tires (yet) and the few times I drove it in slick conditions it was horrid, as is my 190d (no snows also). The tire by far makes the largest difference of all.

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