I know that they say that it's recommendable to change summer or regular tires every 4 years because the rubber hardens. Even if they are fine related to the depth of the tread.
However, how long studded tires last? I don't drive that much and this is going to be the fifth winter of my current set and it my first time using this, so I don't have any folk's knowledge about this. I don't know if I should change them. They look fine and the studs are in a good shape. Are there any wide on how to assess this?