The corona rings (aka angel eyes) are H8. You will need 2 bulbs, and they are sold as pairs. Just do a web search for them and you will find numerous vendors.

If you are also looking into replacing the fogs, those are H11 bulbs.

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[B]2014 Cayenne Turbo S[B]
2007 X5 4.8 - Titanium Silver , Black Leather, Premium, Prem Sound, Sport, Rear Climate, Heated Seats, Running Boards, Lux H8, GP Thunder Fogs
2003 BMW Z4 3.0si (retired)