Most of the housing stock we work on went up between 1938 and 1987, with a median build year of 1967 - that's a lot of original steel rollers still running in steel track that's flexed through six decades of freeze-thaw. Steel rollers don't flex; they just grind, and grinding steel against steel in a cold garage is loud and it's slow death for the track edges too.
Rochester sits in a severe cold climate band, and that matters more for rollers than people think. Cold makes the lubricant in the roller stem stiffen up, so the wheel doesn't spin freely - it drags, skips, and wears flat on one side. A flat-spotted roller then hammers the track every time the door moves, instead of rolling through it. That's the cycle we see on service calls all winter: stiff cold mornings, a door that groans going up, and a roller that's already shaped wrong by the time anyone calls us.
Houses from the 1960s and 70s dominate the 32 named areas we cover, and a lot of those garages still have the builder-grade 7-ball steel rollers that came with the house. They were fine for the first twenty years. They are not fine now.