Main reason behind deflating a wheel

[ahmed88]

Prior to removal, a wheel is deflated as a standard safety practice, whats the main reason behind this ?

Is it because of the valve core's ability to be ejected like a bullet under pressure ?

i was asked this question, my answer was that since an MLG could have around 180-200 PSI, add to that possible damage and wear + heat could increase the chances of it bursting when handled for removal. but he said no, its not the main reason, go look for the answer.

thanks.