Vintage cars prior to the arrival of laminated glass, didn't seem to suffer but certainly for side windows and rear tempered glass in some more recent cars it's been a mystery to me why they seem to just let go, sometimes with the help of a insignificant small bump ... but I just read about something I wasn't aware of
[1] > *"However, tempered glass has a critical weakness: nickel sulfide inclusions. These microscopic impurities can form during manufacturing and remain dormant for years. Over time, temperature fluctuations cause these inclusions to expand, creating internal stress."
Vintage cars prior to the arrival of laminated glass, didn't seem to suffer but certainly for side windows and rear tempered glass in some more recent cars it's been a mystery to me why they seem to just let go, sometimes with the help of a insignificant small bump ... but I just read about something I wasn't aware of
[1] > *"However, tempered glass has a critical weakness: nickel sulfide inclusions. These microscopic impurities can form during manufacturing and remain dormant for years. Over time, temperature fluctuations cause these inclusions to expand, creating internal stress."
[1] https://cardog.app/blog/exploding-sunroofs-panoramic-glass
https://www.wsj.com/business/autos/car-sunroofs-keep-spontan...