The softer rubber does make the tire wear faster, so I have them for the day I drive up, then take them off when I get back home. This article from edmunds says that snow tires from 20 years ago didn't perform well (failed after one emergency stop) in the dry conditions, but modern snow tires work great in the dry. The bridgestone article agrees that wear is the predominant concern for running snow tires year round. I have found some sources that say wet braking is worse with winter tires than with all seasons but the opposite is true for snow, so the question could come down do how much snow do you expect vs how much rain. I agree most storms bring lots of rain, but I would bet that per mile of road, snowy roads produce a significantly higher rate of accidents than wet.
When I leave for Tahoe in the early am, it is often colder than 40F so the mushy rubber is less concern for me in the "warm" parts of the drive. I have pushed my vehicle quite a bit in the dry with my snow tires and my experience matches up that overall performance isn't as good on dry pavement as my fancy summer tires, but the winter tires are safe and effective on dry pavement, and significantly safer on snow. If I had to put a number to it, I would say my braking in my Blizzaks is 85% as good as with my Pilot Sport 4S tires in similar (40ish F) weather, keeping in mind I run a performance summer tire in the PS4S.
Love the discussion! This is making me learn more about tire types I had only previously done small amounts of research into.
With top-quality winter tires on your car, truck or SUV, you're no longer at the mercy of the weather or drivers around you.
www.edmunds.com
www.bridgestonetire.com
And this is what all of us should aspire our winter driving to look like