How fast can I drive with chains?
30 MPH
At speeds faster than 30 centrifugal force lifts the chain off the tire and causes it slap the pavement accelerating wear.
For example:
If the chains are as tight as possible:
At 30 mph you get maximum chain life.
At 40 mph… 57% of the chain life
At 50 mph… 31% of the chain life.
If the chains are loose:
At 30 mph you get 50% of chain life.
At 40 mph… 16% of the chain life
At 50 mph… 7% of the chain life.