Moreno Valley's housing stock runs 1958 to 2003, with the median build year sitting around 1983. A lot of garages in that window still have the door that came with the house - single-layer steel, no insulation, builder-grade hardware sized for a door that's lighter than anything you'd spec today. That's fine for a decade or two. It's not fine after forty years of sun.
The climate band here is moderate heat, not desert-extreme, but it's steady. Garage doors facing west or south spend years absorbing afternoon heat, and steel without a thermal break expands and contracts on that cycle every single day. You get chalking on the paint, panel bow, and seams that used to be tight pulling apart at the corners. None of that is a defect - it's just what thirty-plus years of moderate heat does to a door that was never built to handle a thermal swing that long.
We see the same pattern across the thirty-some named communities in this service area: 1980s and 90s tract construction, original door still hanging on, and an owner who assumed a garage door lasts as long as the roof. It doesn't. Installation calls here are less about failure and more about finally replacing something that's been quietly degrading since before most buyers owned the house.