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martin clack
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Length of Wheel Nuts for W220 Mercedes

07/21/2009 4:26 PM

Hi I am putting the original alloy wheels 8 inch rims back on my S class 2001.I do not have the original nuts,does anyone know the correct length of the threaded bar section I am estimating 35mm...?I do not want to stuff the brakes...Help

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RVZ717
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#1

Re: Wheel nuts for a W220 Mercedes,what is the correct length

07/21/2009 4:50 PM

Call up your local mercedes dealer, ask for the service department, and ask the person on the phone the same question you just asked here.

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martin clack
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#2
In reply to #1

Re: Wheel nuts for a W220 Mercedes,what is the correct length

07/21/2009 5:31 PM

They don't want to know or I wouldn't be here asking the question.....

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RVZ717
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#3
In reply to #2

Re: Wheel nuts for a W220 Mercedes,what is the correct length

07/21/2009 5:52 PM

"They don't want to know or I wouldn't be here asking the question....."

I dont understand your above quote

I believe it's their job to know.

but...

some quick web research has turned up 28mm +-1.1mm, But I'm no Mercedes Technician.

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martin clack
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#4
In reply to #3

Re: Wheel nuts for a W220 Mercedes,what is the correct length

07/21/2009 5:56 PM

Quite,I measure 35mm approx but I am concerned that the bolt will intrrude into the void behind the disc and mess up the inboard brake disc on the rear... Thx

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RVZ717
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#5
In reply to #4

Re: Wheel nuts for a W220 Mercedes,what is the correct length

07/21/2009 6:05 PM

The 35mm is from the aftermarket rim? You are correct in being cautious when installing them, as damage can be done if the wrong lug is installed. Many aftermarket rims require different lug lengths. I personally would try the dealership service center again, and get pissy if you must.

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lyn
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#6

Re: Length of Wheel Nuts for W220 Mercedes

07/21/2009 7:18 PM

Is it a nut or a bolt?

Must be a bolt. I drive a Ford PU

Can you not measure the combined thickness of both penetrated parts, wheel and mounting plate, and choose a bolt that is one thread longer?

Or, go to the dealer and tell him you want to buy them from him and I'll bet he'll produce them.
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RVZ717
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#7
In reply to #6

Re: Length of Wheel Nuts for W220 Mercedes

07/21/2009 7:20 PM

Should be a bolt.

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lyn
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#8
In reply to #7

Re: Length of Wheel Nuts for W220 Mercedes

07/21/2009 7:34 PM

Yes, but:

"Length of Wheel Nuts" led me astray till I got to the part about, "length of the threaded bar section".

BTW, I enjoyed reading of your G,G,G Grandfather's exploits. Hope I got the # of Greats right.

Cheers!

Lyn
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RVZ717
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#9
In reply to #8

Re: Length of Wheel Nuts for W220 Mercedes

07/21/2009 7:47 PM

hmmm... I believe so... no.. i left one out i think...

crap, now i'm not sure.... need to check the tree...

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wrench
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#10

Re: Length of Wheel Nuts for W220 Mercedes

07/23/2009 7:42 PM

Measure the thickness of the wheel hub and add the nominal bolt diameter (12, 13. 14 mm) plus a couple threads, probablly 1.5 or 1.75 mm pitch. The total length of the bolt would be measured from the end of the bevel next to the bolt head to the end of the threaded part. The rule for thread engagement of steel into steel is 1-1.5 X D.
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