What is a common indicator of frame damage after a collision?

Misaligned doors or gaps between body panels are a common indicator of frame damage after a collision because such misalignments suggest that the structural integrity of the vehicle has been compromised. In the event of a collision, the frame is designed to absorb energy and maintain the vehicle's shape. If the frame is bent or twisted, it can result in the misalignment of various components, including doors, hoods, and other body panels.

This misalignment can often be seen as gaps that are inconsistent or uneven, indicating that the vehicle's body has not returned to its original configuration after the impact. Such visible discrepancies are direct external signs of frame damage.

The other options may indicate different issues that are unrelated to frame damage. For example, excessive tire wear usually points to alignment or suspension problems rather than frame damage specifically. An uneven paint finish might be a sign of poor repair work or variations in surface preparation but does not directly signify frame issues. Lastly, an unresponsive brake system could result from various factors such as mechanical failure or fluid issues, not necessarily linked to frame condition. Thus, the misaligned doors or gaps are a clear and specific indicator of potential frame damage.