Why do some subway systems (e. g. Paris, Montreal, Mexico City) have rubber tires instead of steel wheels?

Question

Why do some subway systems (e. g. Paris, Montreal, Mexico City) have rubber tires instead of steel wheels?

In: 313

Answer 1

If I’m recalling correctly in Montreal’s case it is because rubber tires provide for a smoother / quieter ride and since the Montreal Metro system is entirely underground, the greater wear-and-tear rubber experiences over steel due to winter weather is a non-issue.