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2002 SLK32
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Discussion Starter · #1 ·
Since I swapped my rotors I noticed a chirping sound that is almost certainly a lug nut barely hitting something. When I first put the Renntech monolites on my SLK32, it was a ticking sound. The lugs needed to be cut which fixed the problem except under very heavy breaking when the brakes got hot. Even now, it only starts chirping when the car warms up. The lugs much expand just a little tiny bit and start hitting something. If I pull up on the e-brake handle just a little tiny bit, the noise stops.
 

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Golf R32 / Prev R170 SLK
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Depends where you live . Its on the drivers side on mine (r/h) and the drivers side on yours (l/h) so I am guessing MB wouldnt have 2 defaults ..... SO..... both wheels.

Just joshing. On both wheels inside rear disk. Sounds like your wheel bolts are too long .

Bazzle
 

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2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
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Lug bolt length is critical because of the parking brake.

The excess bolt length can do damage to the brake shoes, and if the threads on the bolt get damaged, they can mess up the axel flange threads.
Shorten the bolts until the just pass through the threaded flange.
 

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Discussion Starter · #5 ·
RE: The noise stopped on its own...

Pretty odd that it would stop on its own. I didn't take the highway home last night so I thought maybe things just didn't get hot enough but I did this morning I can't hear anything now. I'll probably still take the rotors off and attach the wheel to see how far the lugs are extending behind the flange.

On the other hand there is that old saying, "if it ain't broke, don't fix it".

I imagine the best way to cut the lugs would be with a cut off wheel on a grinder. I should be able to get a nice clean cut. Any other ideas?
 

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2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
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RE: The noise stopped on is own...

A grinder works just fine, if you deburr the threads you should have no problems. There probably wasn't much interference, and what little there was got worn away. Clean up the threads and you should be OK.
 

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Discussion Starter · #8 ·
RE: The noise stopped on is own...

Bazzle - 4/7/2006 3:54 PM

You can remove the lugs one at time and inspect for damage/rubbing. Measure the shank length and compare to the others one by one.
You wont need to jack or remove wheel this way.


Bazzle
I did that yesterday put all the shortest ones on the left rear. One of them was definitely rubbing but I don't believe it was the longest one which I thought was extremely odd. I kind of did it in a hurry. This weekend I'll take some more time to work on this.
 
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