High Performance Summer tires in a snowstorm?
Good luck.
Go to the TireRack site here , type in your vehicle & select any All Season tire you want.
Btw. my 2007 C 230 Sport has 225/45/17 in the front and 245/40/17 in the back for the summer.
In the winter I run 225/45/17 Snowtires front & rear.

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2007 C 230 Sport.