If your door is original to a house built around 1964, the failure pattern is pretty consistent: the torsion spring goes first, usually announced by a loud bang and a door that suddenly feels twice as heavy. Next most common is a bent track from decades of small impacts - a car mirror, a bike, a kid's basketball - that never got straightened and slowly walked the rollers out of alignment.
Cold-weather callouts here spike when temperatures drop hard and fast, since the sustained severe-cold stretches this area gets in winter make old lubricant on original hardware seize up right when the steel is at its most brittle. If you're hearing a grinding sound low on the track rather than a bang up top, that's usually a roller near end of life, not the spring.
Openers are a separate story from the door itself - a slow-closing or reversing door often points to failing safety sensors rather than anything mechanical in the spring system, and that's worth ruling out before anyone touches the springs.