What does lateral run-out refer to in tire service?

Lateral run-out specifically refers to the deviation of a tire from its true position in the horizontal plane, meaning it is measured across the tire's width as it rotates. This term is crucial in tire service because excessive lateral run-out can result in uneven tire wear, vibrations during driving, and can affect overall vehicle handling and stability.

In the context of tire service, maintaining proper lateral run-out is essential for ensuring that tires wear evenly and perform optimally. Technicians often check for lateral run-out when balancing tires or diagnosing handling issues, as it indicates how well the tire maintains its shape while spinning. Proper management of lateral run-out contributes to vehicle safety and comfort by ensuring that all tires function correctly during operation.