So part# 34216860927 is the oem 370mm rear rotor. On many bmw sites, it says it's discontinued and they offer no replacement part # except the 345mm rotor.
When I go to Brembo, they have the interchange part # Brembo Brake Rotor - 09.D901.13 but it says it will not work with my car and keeps suggesting 345mm as do many other sites like FCP, partsgeek, etc.
Interchange Part Number:
34216860927
Replaces OE Number:
34216860927
I also confirmed which calipers I have because I took pics of them when replacing my tires yesterday.
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