Wheel Offset (ET)

Positive offset moves the wheel inwards, negative outwards. It affects clearance, steering feel and bearing load. Allowed values are given by the manufacturer. Offset is printed on the wheel, often with the width in inches and J (for example 7.5J ET45). Spacers change effective offset and need approval in many countries. Even a few millimetres can make a tyre touch the strut or arch at full lock.

Changing offset moves the tyre in or out in the arch.

Wrong offset can make tyres rub or overload bearings. Check legal requirements for non-standard wheels.