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      06-16-2007, 09:35 PM   #45
Fredric
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Drives: 328xiT
Join Date: Apr 2007
Location: NYC

Posts: 60
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I remember a demo in high school physics class of what can happen if tempered glass is not cooled properly and there are uneven internal stresses in it. The instructor scratched the surface, and the glass shattered. It may be that a batch of such glass was sent to BMW, or even that the mfg does not have proper quality control, so that it is an ongoing problem (like the infamous Siemens fuel pumps). Just my .02c
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