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I'm sure this has been posted somewhere here before, but after several evenings of searching I've had no luck. So I would really appreciate it if you can provide me with some answers or point me in the right direction.
I own a US-spec 2017 C63s Coupe with a set of 19/20 staggered set of summer tires, and I'm looking to build a set of "beefiest" winter tire/rims that I can effectively fit on this car. Tirerack only gives me the option of going with stock (staggered) and the local felgenoutlet.de doesn't have the MY2017-2020 specs loaded. After some combing through the forums, I was able to find one European tire site that lists the different combos. Can anyone confirm if these winter tire/rim sizes are correct for my US-spec? If these tire sizes are accurate, I'm looking to purchase using the 4 x 19" data listed in below table. Or can anyone verify if even an 18" set will fit my coupe (without changing speedometer readings)? My initial guess is that an 18" is a no-go.