[s-cars] galvanic corrosion resulting in loose lug nuts: BS or not?

[Mark Strangways]

And this all happened in HOW many miles.
The only way Galvanic corrosion would erode the wheel surface enough would 
take some time.

I have to sat BS on this one.

Bueller ?

Mark
----- Original Message ----- 
From: "David Cahill" <david.cahill at alum.dartmouth.org>
To: <s-car-list at audifans.com>
Sent: Tuesday, October 03, 2006 5:38 PM
Subject: [s-cars] galvanic corrosion resulting in loose lug nuts: BS or not?


>A buddy of mine (who is not fortunate enough to have an S-Car) has a B5 A4
> 2.8L. After a recent alignment and tire rotation, he was driving down the
> highway and noticed some serious wheel vibration. Ten seconds later, 
> voila,
> the cause is identified -- there's only ONE lug nut left in the driver's
> side front wheel.
>
> He confronted the shop about the missing lug nuts, and they had something
> interesting to say. They say that they properly installed the lug nuts and
> torqued them to spec, but the lug nuts likely fell out due to galvanic
> corrosion.
>
> Here's my question: has anyone heard of this happening? Is this total BS? 
> My
> gut instinct is that galvanic corrosion of the wheel wouldn't cause the 
> lug
> nuts to unscrew themselves. That, and I've simply never heard of this
> happening despite the fact that there are 100,000s of Avus wheels out on 
> the
> road.
>
> Thoughts?
>
> TIA,
> Dave
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