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Originally Posted by dbronnik
Can anyone confirm these part numbers? I'm going to be taking up this conversion soon for my 135i (and hope to clearly document exactly what is required for people in the future).
2x E91 Performance Rotors - PN 34216795755
2x E90 Rear Wheel Hub - PN 33416760058
2x Rear Wheel Bearing - PN 33416775842
2x Axle Nut - PN 33411133785
Is the above plug and play with my existing rear calipers / etc?
What rotors should I use to match these performance ones for the front (right now I have the stock blank face rotors)?
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That list sounds correct with it
You will have Performance rear rotors with the dimple and slots.
If in doubt look at ECS kit it should be exactly what you have.
There is no bolt on solution for blank rotor in the 135i size. All blank rotors currently need a washer or spacer for caliper.
The blank rotor that works bolt on is smaller size because it's from 328ix
Zimmerman blanks this special bolt on size are very rare old stock and may cost just as much as e91 Perf rotor