Agreed, until it hits < 20-25 degrees (glass-transition temp for most summer tires) or so, at which time most of the manufacturers say avoid driving at all lest you crack/split the tread. Here in Central Texas we do get some freezing/below freezing days but I just drive appropriately and if there's frozen precip I don't drive the SS. But, I'm definitely not putting tires with inferior lateral/longitudinal grip characteristics (All-Seasons) on my car just a for a few days of the year, I'd go dedicated Winter/Summer sets if I lived in a cold/snowy region.Summer tires (at least the Michelin PSS and P4S) perform just fine in well below freezing temperatures if we're not driving like it's the dead of summer on a race track. Would I want to drive them in the snow and ice? No, but all seasons are nearly useless in the snow and ice as well. I've driven in below freezing temperatures on PSS' for three winters. I've even driven it in the snow (fresh snow not after it sat overnight and froze to ice) twice because I had no choice and it did decent enough. I'm in GA so it generally doesn't stay in freezing temperatures all day long but it does happen.