Had studs on my '63 valiant (rear only) They outlawed them in '70 or '71 except up in the "near north" from about North Bay or Sudbury on up. Didn't finf them particularly troublesome safety-wize on bare / wet pavement, but it was pretty easy to tear out studs braking or accellerating too hard. I buy good studless ice tires these days for winter (on all 4 wheels)