The short version
- Measurement finds twists and shifts you cannot see by eye.
- Manufacturer specs set the targets.
- Some cars use unibody designs rather than a separate frame.
Unibody versus body-on-frame
Most passenger cars use a unibody; trucks may use a ladder frame. Terminology on estimates follows the design.
When it is recommended
Side impacts, undercarriage hits and airbag deployments often trigger measurement.
Reading the report
Ask the shop to show before-and-after numbers.
Insurance conversations
Measurement can justify repair hours on an estimate.
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