Most of the houses we work on across the service area - Mooretown, Sunset Acres, Caddo Heights, South Highlands, Cedar Grove, Broadmoor, and the other pockets that make up this side of town - went up between 1981 and 1996, with the median build year sitting around 1993. That's a specific era of garage door hardware: steel tracks, steel rollers, torsion springs sized for the doors of that decade, mounted on brackets that were adequate for new construction but were never built to be serviced for thirty-plus years.
Add the climate here, which runs a moderate heat band most of the year, and you get steel components that expand and contract through repeated warm cycles without the deep cold snaps that would otherwise force earlier hardware failure. That sounds like a good thing, and mostly it is, but it also means a lot of these tracks and rollers wear out slowly and quietly instead of failing all at once - a roller degrades bit by bit until one day it just walks off the rail.
With 6,827 owner-occupied houses out of 10,769 households across the area, a large share of these doors are original to the house or close to it. Nobody's swapped the hardware because nothing's broken outright - until the door comes off track on a Tuesday morning with the car halfway in the driveway.