ET30
ET30 is a designation used in multiple domains, but it is most commonly encountered in automotive wheel specification. In wheel terminology, ET stands for Einpresstiefe, the offset measured from the wheel’s mounting surface to its centerline. An ET30 wheel has its mounting surface located 30 millimeters from the wheel center. This offset helps determine how far the wheel sits in or out relative to the vehicle’s fenders and suspension, influencing track width, clearance to brake calipers, and inner fender space. When fitting wheels, manufacturers specify an acceptable range of offsets; using an offset outside this range can lead to rubbing, altered steering geometry, or other clearance issues. Matching offset across wheels is also important for consistent handling and tire wear.
Beyond wheels, ET30 may appear as a model number, product code, or designation in other industries. The
In summary, ET30 most commonly denotes a wheel offset of 30 millimeters, with implications for fitment and