Quote:
Originally Posted by Billfitz
It's the wrong rotor. The part numbers should be stamped on them.
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BINGO!
I had EXACTLY this problem a few weeks ago. Got the blue brembos off an F20 and it turns out the parking brake is bigger on the F30s.
You can go right ahead and ditch those rotors... Or try to sell them. This is the part number you need:
34206797607
Alternatively you can get them drilled:
34206797600
I got some dirt cheap vaico oem-quality rotors, under 100€ for the pair. They seem fine so far, we'll see how they hold up to abuse...