The HEAT climate band this suburb sits in matters more for rollers than people think. Nylon rollers are plastic, and plastic softens and swells slightly in sustained summer heat, which changes how tightly they ride in the track. Add a steel track that expands a fraction of an inch in that same heat, and a roller that was fine in February starts binding and chipping by August. Houses built around the 1993 median common in Highland Village mostly shipped with nylon rollers as standard, not the steel ball-bearing kind, so this is the roller type we see failing most on these doors specifically - not a universal garage door problem, a problem tied to what came stock on homes of that era. With a median household income of $164,459, well above the broader service area's $117,853, we also see more owners upgrade to steel ball-bearing rollers on replacement rather than putting nylon back in, since the heavier insulated doors common at this income level put more strain on a plastic roller over the same number of open-close cycles.