Learn how to replace a headlight bulb on a BMW X5. This procedure works for the 2007-2013 E70 model years. Part links are below.
Sylvania D1S HID Bulb (for Main Xenon Lights) https://amzn.to/2ejOsHN
or
Philips D1S HID Bulb (for Main Xenon Lights) https://amzn.to/2eKiWBo
Daytime Running Lights H8 Halogen Bulb https://amzn.to/2fCqjso