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As someone who has wiped out on snowy/sludgy cobblestones at least twice per season on 40mm Schwalbe G-One Allround, 40mm Schwalbe Marathon and even on winter-specific 42mm Michelin Star Grip (see first row) and is currently planning a new commuter build with some 65+mm of clearance to maximize contact area, do you think 62mm Continental Contact Urban (see big image) would be a good option? If tests and user reports are to believe they have exceptionally good wet traction on hard surfaces even approaching the freezing point thanks to their compound and nearly slick tread, but I can't find any reports about their snow performance. It doesn't snow often here, only a few times/weeks per season I'd say, but when it does snow it's usually not enough for a useable hardpacked surface and instead it's thin and becomes chewed up by traffic and sludged up by road salt so quickly it turns the cobbles into even more of a slippery nightmare which makes me think knobby tread as you'd expect from snow tires won't make a difference in my case and I may actually be better off treating the conditions the same as wetness and continuing to bet on slicks for maximum contact area.