I can not make a backup work on mine. I am a computer wiz, and I have tried multiple types of media, burners, software, and speeds. Nothing works reliably on mine. Plus, I have seen a lot of posts like yours. Either BMW throttled-down the laser so that it won't reliably read copies, or it is just a weak laser. It will work great forever with an original disk.

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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input