I have the same issue with my V3. The groan is very similar to kcwl's video recording. The sound is a repetitive 'woo......woo.....' that varies with speed/wheel revolution (something rubbing around each revolution). To the best of my ability to tell, it sounds like the groan is coming from the rear-passenger side. Like most others, the sound is usually present after the car has sat overnight or after prolonged parking and last for 100-300 feet of driving. I've even heard it after four hours of being parked at work. It will typically make this sound for a few days after a rain event. The sound has occurred in both forward and reverse and with the ebrake on or off prior to departure. I purchased the vehicle in April (50-60 degrees) and have heard it all the way to the present (80-90-100 degrees). During a tire replacement I made note of the issue to the dealer, who attributed it to rotor oxidation. I responded that I've heard the grind/groan of rust being worn off the rotor when first apply the brakes, and this is not that sound. I went in with a recording on my phone and the technician agreed it wasn't rust. They repaired the tire and tried to reproduce the condition (but of course it didn't occur). They did tear down the brake and found nothing out of the ordinary. Tomorrow I am taking the car in for it's 5,000 mile service and plan on leaving it with them overnight to see if they can reproduce it the next morning. Paparich, did you happen to record the TSB number when you reviewed the document? It would be great ammunition to take with me to get this issue resolved.