HOW TO WORKOUT THE OFFSET required etc for your wheels!

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EK9turbo

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1. Measure the wheel/car accurately using the following two pictures as guides



2. Measure overall width of wheel (OW)

3. Measure the ‘T‘ dimension, which is the measurement from the back of the bolt up face to the outside of the inner rim

4. Divide the overall width by two which gives you the centre line

5. Minus the centre line from the ‘T‘ dimension

Use this formula to work out the offset/ET required

ET = T - OW / 2

Wheel Dynamics
OW = Overall width of wheel
T = Backspace of wheel
ET = Offset (Einpresstiefe)



This information is credited to Compomotive Wheels
http://www.comp.co.uk
Full details:
http://www.comp.co.uk/info/technicalinfo.asp#
 
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