[Bora20]

The E90 couldn't legally have clear taillights because there aren't separate red reflectors. The current and upcoming 5 series does, lower down in the bumper, so there aren't any legality issues with them.

You could make it legal if you stuck red reflectors on the car, so BMW could make clear taillights legal for the E90 is stick on red reflectors were in the box. This is how Hella packages their clear taillights.

Now before someone starts saying that they flash red so they are legal, I would ask you to reference your MVA or DOT regulations and you will find that all cars must have rear facing red reflectors, as well as side facing rear red reflectors and side facing front amber reflectors.

I don't make the rules...