On one of my worst commuting days in decades, the roads were so slick, that cars couldn’t make it up one of my hills, yet I could with my studded tires.
On the other hand, I have previously posted,
Originally Posted by
Jim from Boston
On one of the worst winter days I have ridden by bike on studded tires, I was able to stop three different times, to push hapless drivers spinning their wheels on icy roads to get onto less slippery patches.

Originally Posted by
Jim from Boston
When winter cycling
I particularly emphazise wearing a rearview mirror because of that added danger of cars skidding, both behind and oncoming, and usually on narrowed roadways.
… When I do ride in nasty weather though my wife does chide me,
"You just want to ride today so you can write about it on BikeForums." 