Ok, I've done a little research online on the H8 bulb you are talking about and this may not be the halo bulbs. The Z435is and the 335is is using the same part number on that H8 bulb. Look at Item # 6 on the Z4 and Item #5 on the 335is:
Did I look at the wrong ones? Ok, I need to get out of the house and take a nice drive in this beautiful weather in Bay Area now.
2015 BMW i3 REX