Pardon the sensational title, but it seems to be necessary and the normal thing to get attention for a new product thread. Jazz hands!
Here's a tire break through in progress. Imagine a tire that has retractable studs.
Retracted when not needed. When you need studs you push a button and studs stick out of the tread. When you don't need them, push the button again and studs retract again.
Sounds like sci fi, James Bond, or Speed Racer stuff doesn't it?
Nokian is working on developing this technology for real. See link below to Fox News article about it, and see
While at the Fox News link watch the Nokian video that shows studs retracted, then stick out when button pushed.