FWIW I have driven all over MT(for the last 25 years) and never had to chain up.
Talking a little Honda Civic on a mountain pass in very sketchy weather conditions. Semi's on I-90!
It was icy as a mofo here last week but luckily no hills.
I can see chains on icy snow pack being handy.
Last edited by SamOlson; 12/08/19.