This has been discussed numerous time.
Don't buy or even replace your oil pan. No need to drill or tap it either.
The oe oil drain plug is hollow for this main reason. Drive in an Allen wrench that will fit inside the broken drain plug and twist off the broken plug.
This fix will cost u nothing other than new motor oil and a cost of a new drain plug.
What is cheaper? A new or used oil pan or my method.
U can thank me later. I hope this helps. Good luck
sent from my dahc-6900 using Bimmer App