What Does ET Value Mean?

[LeRosalie]

Tire ET value refers to the Off-set value, which is the offset distance between the mounting surface of the wheel hub and the centerline of the wheel rim, measured in millimeters. It can be positive, zero, or negative. Below is more related information: 1. Definition: Off-set is defined as the distance between the mounting surface of the wheel rim and the center of the wheel rim. A positive value indicates an outward direction, while a negative value indicates an inward direction. When the Offset value is 0, the contact surface between the wheel and the hub is at the centerline of the wheel. When the Offset is positive, the contact surface is more biased toward the inside. 2. Impact: Changing the ET value also affects the load on the bearings. Generally, the design of the set in most cars aims for the lowest bearing load during straight-line driving. Although using a wheel rim with a smaller positive ET value may slightly increase the bearing load during straight-line driving (changes in Off-set within 50mm do not require excessive concern about bearing load issues), it can reduce the load during cornering.