Question on Ronal Penta bolt pattern - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 06-18-2019, 06:31 PM Thread Starter
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Question on Ronal Penta bolt pattern

I picked up these Ronal Penta wheels which according to the seller came off of a VW.

I was gonna put them on my ‘82 123 Turbo Coupe.

But when I checked the bolt pattern, it measured 123mm which is 4.84”

I looked up the 5 lug charts on the Internet but found 120.7 (4.75) or 127 (5) only.

Did I measure it wrong?

Any opinions is appreciated.

Thanks
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post #2 of 7 (permalink) Old 06-18-2019, 07:09 PM
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You're measuring wrong. A bolt circle is the diameter of a circle formed by the centers of the wheel lugs.

https://www.tirerack.com/tires/tiret....jsp?techid=92

Last edited by 260e crusier; 06-18-2019 at 07:15 PM.
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post #3 of 7 (permalink) Old 06-18-2019, 08:58 PM Thread Starter
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Ah, got it. Thanks 260e Cruiser!
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post #4 of 7 (permalink) Old 06-19-2019, 05:53 PM Thread Starter
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I just measured it and got 11.7 mm or 4.60”.

Should I round that to 4.53” or 4.72”?
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post #5 of 7 (permalink) Old 06-19-2019, 08:05 PM
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Is there a part number on the wheel?
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post #6 of 7 (permalink) Old 06-21-2019, 07:34 PM Thread Starter
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Yes, looks like it’s “6825” “121”
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post #7 of 7 (permalink) Old 06-22-2019, 08:22 AM
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MB bolt circle for cars are 112mm, so 117mm is not a direct bolt on.

117mm is equal to 4.60" as you noted. Bolt circles are exact measurements and are not rounded up or down.

Not sure if it's the camera angle, but looks like your edge on the top left bolt hole might be off a bit, so might be 115mm or 4.53" ?

You need to measure the bore also.

Last edited by 260e crusier; 06-22-2019 at 10:22 AM.
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