Rusty lug bolts - Mercedes Benz SLK Forum

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#1 Old 07-13-2012
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Rusty lug bolts

I've noticed the same symptom from my previous SLK350 and now SLK55, the oem lugs bolts from Mercedes tend to rust fairly fast, include my neighbor's ML and C class (both 2009 model). I had a 2009 Honda accord and now the bolts are still in perfect condition. Same to my friend's Nissan Altima, perfect bolts even after 3 years.

Wondering what is the reason Mercedes use the bolt that is so easy to rust?



I'll say about 85% of the car I've seen on the street from Mercedes got rusty bolts if the age is about 3 years and up.
But cars from Honda or Nissan, even after 5 years the bolts will still have zero rust.
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#2 Old 07-13-2012
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Easy fix is take one bolt off each wheel and clean it up and paint it. When dry put it back on and then remove another bolt and clean and paint. Continue until you have painted all bolts. No need to jack up car as you will have four bolts holding the wheel in place.
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#3 Old 07-13-2012
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I'm with you. It's always fascinated me that they sell a $50-$100,000 car with rusty lug bolts.

Educated Guess. I didn't stay at a Holiday Inn Express last night, but I did take one Materials class in college 30 years ago.

I'd say that those Germans chose the bolt material for it's tensile strength and ability to handle sheer stress rather than external appearance and the ability to hold a finish.

Fortunately for us there are plenty of American shops that sell chrome versions of the bolts. I have even seen some that sell plastic covers that are really shiny. Thus you can have the strength of the OEM bolts AND the shiny finish our hearts desire !

Here's a great thread on another DIY method.

https://www.slkworld.com/slk-r170-gen...eel-bolts.html

Gene
Current Mods & Accessories: SmartTop module, AMG Style Spoiler, Clear Side Markers with Chromed Amber Bulbs(SLKStore), John's 3rd Brake Light Flasher, R170 Homelink Module, Chromed Amber Turn Signal Bulbs front & back, Error Free LED Parking Lights (SLKStore) & License Plate Housings, Lamin-X Fog Lamp protectors, OEM Windstop, Facelift A20 w/Bluetooth & Aux-in, Drilled & Slotted Rotors, Digital Climate Control


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#4 Old 08-13-2012
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Thanks. Just bought my SLK with rusty bolts. Good to know it's a common problem whether you are in Indiana or UK.
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#5 Old 08-13-2012
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If they are chrome plated grap some wire and wheel cleaner form eagle 1 to clean them!
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#6 Old 08-14-2012
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Isn't Rusty Lugbolts running for President?
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#7 Old 08-14-2012
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Quote:
Originally Posted by GeeJay View Post
Isn't Rusty Lugbolts running for President?
Yeah, wasn't he the one who said the United Kingdom & Ireland weren't ready to stage the Olympics?






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#8 Old 08-14-2012
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Yeah, wasn't he the one who said the United Kingdom & Ireland weren't ready to stage the Olympics?
Now you mention it, I think you're right. Good job he wasn't..
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#9 Old 11-26-2012
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Quote:
Originally Posted by Gbarringer100 View Post
Easy fix is take one bolt off each wheel and clean it up and paint it. When dry put it back on and then remove another bolt and clean and paint. Continue until you have painted all bolts. No need to jack up car as you will have four bolts holding the wheel in place.
I just finished doing this during this past weekend. Very easy fix. I ended up painting mine to match my wheels with http://www.amazon.com/gp/product/B001NZHET6/ref=oh_details_o00_s00_i00
Here are a few pics... and yes I still have to use the "silber spray" to finish touching up the wheels, just that is a much bigger project.

Rusty Bolts


More than half way done


Bolts after two coats of "Silber spray" and one clear coat


Finished product
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#10 Old 12-04-2012
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Quote:
Originally Posted by phillypilot View Post
I just finished doing this during this past weekend. Very easy fix. I ended up painting mine to match my wheels with Silber Spray

Here are a few pics... and yes I still have to use the "silber spray" to finish touching up the wheels, just that is a much bigger project.

Rusty Bolts


More than half way done


Bolts after two coats of "Silber spray" and one clear coat


Finished product
Surely you should not paint the threads as it could mess up tourque setting ?
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#11 Old 12-05-2012
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The intention was not really to paint the threads, there might be a little over spray on them but I have not had any issues. Seem to be holding tight. If your worried about it simply tape up the threads before you paint yours.
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