I have a set of four brand new Porsche crest hub caps that I received in trade for other parts. They have an opening at the rear of 9-3/8" which I believe fits the clips on 356 and 5 lug VW bug wheels. Can anyone verify the diameter of the opening on caps for the 5 lug wheels? I know that they do not fit the cast in knobs on my 4 lug wheels which require a 9-1/2" opening. I was told that these caps cost their previous owner approximately $80-90, and were purchased in Brazil.
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