ya you have stock halogens. No rings.
You could either:
Try to open up your headlights(very hard and will probably break or leak) and install custom LED coronas. (picture taken from Satalite) Nobody that I know of has done this yet.
Or you could buy OEM 135i Xenon headlights(around $1,500).
Or, the cheapest option would be to buy DEPO headlights such as these.