What Causes Box Truck Door Tracks to Keep Bending?
“What Causes Door Tracks to Keep Bending?” Your roll‑up door tracks look like pretzels—again. You’ve straightened them, maybe even replaced them, only to find new kinks a few weeks later. So you’re asking: “What keeps bending these door tracks? Is it my drivers, my springs, or the way the box is built?” This deep dive explains why box truck roll‑up (and even some swing-door guide) tracks deform repeatedly, how to diagnose the root cause, how to repair and reinforce correctly, and what habits or adjustments prevent the next bend. Quick Takeaways Tracks bend because of misalignment, impact, uneven spring/cable tension, debris/ice buildup, or structural shift in the rear frame —not just “driver abuse.” Replacing a track without fixing the underlying cause (crooked header, bad springs, loose brackets) guarantees repeat damage. Proper repair involves measuring plumb/parallel, verifying spring torque and cable routing, checking door weight, and confirming frame squareness ....