I think you're right....
But....
Basically this is my fear: https://f87.bimmerpost.com/forums/showthread.php?t=1524621
Crashing the car?
No idea about the BMW but most modern cars have traction control to stop you losing traction.
Also in Switzerland, isn't the minimum tyre depth at least 2mm if not more?
@lynx started
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I think you're right....
But....
Basically this is my fear:
https://f87.bimmerpost.com/forums/showthread.php?t=1524621