The E92 335 reflectors are stuck on with adhesive. I took the front wheels off to get to mine more easily. All you had to do was use a hair dryer to heat the adhesive on the inside of the fender for about 2 minutes and then use a tool to pull them off. You had to go slow so you would not pull in any little bit of the plastic fender with it. I used a small putty knife.
The e92 m3's look much different, but I am sure there will be a solution within 30 days of them being released.
I'm getting excited to start seeing them on the road here in the states.