Broken Wheel Bolts

[Kneale Brownson]

OEM wheels from a V8 on the Audi-updated (not improved) brake system
replacement hub (the S-car type).

At 05:27 PM 1/27/2005 -0700, Eric S wrote:
>
>What wheels are you using?  Are they Aftermarket?  If so, are they
>hubcentric?
>
>-- 
>Eric
>www.vintagewatercooleds.com
>
>1981 Scirocco S (TDI swap project)
>1988 Audi 90 Quattro
>1990 Corrado TDI
>1991 Cabriolet (2.0 crossflow 8v project)
>
>Kneale Brownson said:
>> Anybody faced this before:
>> http://www.pbase.com/kneale_brownson/image/39122017  Those holes you can't
>> see through have broken-off ends of wheel bolts in them.   The broken
>> bolts
>> are at    http://www.pbase.com/kneale_brownson/image/39121870
>>
>> I was wondering why I was hearing a strange noise.
>>
>> The Bolts were tightened by hand and torqued with a torque wrench, a
>> process I've done many, many times.   I checked bolt tightness again after
>> about 100 miles of driving.   Nothing was loose.
>>
>> Any guesses as to why the bolts broke?
>>
>> Any suggestions for removing the broken off stuff?  Since taking the pix I
>> have bathed them in Kroil.  I have a set of those reverse drill bits with
>> extractors.  Do I need to be accurate in centering one of the bits?  The
>> exposed surfaces are uneven.  Should I use the largest size I have?
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>>
>