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      03-22-2015, 05:43 PM   #19
bigjae1976
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Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Houston, TX

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2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.25]
2013 BMW 328i  [5.00]
Quote:
Originally Posted by roastbeef View Post
Can you elaborate little bit more about what you mean when you say clean mounting surface? I'm assuming you're talking about snow, salt, or sand for snow conditions?
Where the wheel mates with the wheel hub. Dirt, debris and stuff...and corrosion too. It needs to be clean. A light coat of anti seize won't hurt. Or wheel bearing grease but that becomes a big mess later on.

If those surfaces are not clean then you significantly reduce the contact area between the wheel and hub which is where the strength is. Not in the wheel studs. It don't take much...just a small piece of debris in the paddock to get in between. IMO, this just as if not more important than properly torqueing your wheels.

I'd bet my $$$ on the wheel not being seated properly in cases where all 5 studs broke off.
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