Wood wheels (iron), 18 and 20 mm??

[preS]

I was looking into my wooden steering wheels w/ iron center, when I noticed that the wheels felt different. One wheel felt thicker than the other. When I measured them w/ my caliper I learned that one wheel, w/ a four digit number stamp, is 18 mm and the other wheel, w/ a 2 digit and VDM logo stamp, is 20 mm.

I tend to believe that the 2 digit VDM wheel is MY68 (or MY67 and up), since my alu wooden wheels are 18 mm as well as is my 66 911 and 65 912.

Input appreciated, esp. from owners of a 2 digit VDM wheel.

Regards

Richard

[John Straub]

Richard,

I get two measurements, one at 18mm the other at 20mm depending on how I measure. Mine is steel and a 4# code.

John

[preS]

Hi John

thanks for measuring.

There is definitely a difference in thickness, I measured both wheels at the same spot in the same way w/ a Mitutoyo.

You can also clearly feel the difference too. Although just 2 mm, does it make the wheel feel so much different. The 18mm feels more elegant, the cut outs for the fingers are more present.

Does any of your wheels have the VDM logo?

Richard

[John Straub]

Richard,

Can you post a photo or tell me where the point is you're measuring. Then I can try to do it in the same place.

John