Porsche Alloy wheels ET’s & Offsets

By design911 on Thursday, March 17, 2016

Although our application list is already comprehensive, we are frequently adding new applications to it. If your particular requirement is not listed, we may still be able to help.

The PCD is the bolt pattern, Porsche wheels 5/130 PCD

The offset is calculated from the centre line of the wheel to the back face of the wheel, and a backface in line with the centre of the wheel is zero offset.

If the backface is forward of this line towards the front of the wheel it is a positive offset and toward the rear of the wheel from the centre line is a negative offset.

We can calculate these offsets if you can give us the ā€˜Cā€™ dimension otherwise known as the backspace as shown in the following diagram.

The above information is common to all our wheels whether aluminium or magnesium and includes

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