Ok, so I removed all 6 plugs
Seems like cyl 1 & 2 fried the plugs for some reason
Plug 1:
Plug 2:
Plug 3-6 are fine:
Not sure what could've caused 1 & 2 to burn up that way in a matter of a day and why those only and not all of them if it's in fact due to a difference between these replacement Bosch plugs in comparison to BMW specific bought ones...