It would be easy enough to tell with a tape measure. Lay a wheel on a
flat surface. Using the center hole measure from that flat surface up to
the flat surface that mounts against the car hub. Write it down.  Flip
the wheel over and measure again, up to the same point on the wheel.

Subtract the smaller measurement from larger one.
Divide that by 2. That is the ET

If measurements done in inches, multiply by 25.4 to get ET in mm.

This can be done with tire on or not. More accurate without tire.

Mark

Aaron wrote:
> I was wondering the same. Does anyone know if the wheels show the offset?
>
>> On Dec 5, 2015, at 8:48 AM, vw_van_fan_Mark <madvws@cox.net> wrote:
>>
>> That tire/wheel combo should clear. I wonder if you were sent ET37 wheels by mistake?
>>
>> ET37 fits Syncros so vendors sell wheels with both ET setups.
>>
>> Mark
>>
>>
>> Aaron wrote:
>>> It's time to replace tires and ordered some Nokian tires and some of the 16" euro-look alloy wheels. The tire place just called and said the front wheels are hitting the upper control arms.
>>>
>>> The wheels are the 16x7.5 ET 23 ones that seem to be popular with many list vendors. The tires 215/60/16 (26.2"). It's a 91 carat with stock suspension.
>>>
>>> I wasn't expecting to run into issues. Is that to be expected and in either case is there a remedy?
>>>
>>> Thanks!
>>> Aaron
>>>
>