What does 'twist' indicate in a vehicle's frame?

The term 'twist' in the context of a vehicle's frame typically refers to a distortion where one end of the frame is rotated relative to the other, leading to uneven center sections of the frame rails. This condition can occur due to impact or stress on the frame, which alters its geometric integrity. When a frame twists, it compromises the vehicle's structural balance and can lead to misalignments that affect the handling and safety of the vehicle.

Recognizing twist as relating specifically to uneven center sections helps in diagnosing frame issues accurately during inspections and repairs. Addressing such distortions is crucial, as a twisted frame can lead to further complications, including uneven tire wear and compromised crash safety performance.