Over a month ago I noticed a terrible sound from my car when it goes more than 90 MPH or so. I made a video of it and showed it to my SA and a tech., but they were not confident on what the source is. A suggestion was the turbos were failing, but the sound is not dependent on engine RPM only vehicle speed; I go WOT through 1-2 shifts often enough (and couple of 2-3) and have not experienced this sound at lower speeds. The sound appears more often when it's hot outside (>27 C), which is probably why I haven't experienced this sound until recently (bought the car in March). I have attached a video clip for your viewing and listening (dis)pleasure. If somebody could help identify the source of this abhorrent sound and let me know, I would appreciate it.

upload to youtube as I cannot get it to download. Probably a panel underneath making the noise at speed.

+1

can't download it either, but check windshield moulding for cracks and rear window one as well.

There are several topics on this already. In some cases the noise starts at much lower speeds. Lucky yours is around 100 and how often are you actually driving this fast. What you will find when you search here is, the window seal and various other seals can make this noise. Sometimes a simple replacement of the seal will help you. OR you could always slow down. You get caught going that fast where I live and they will impound your car!
You can take some blue painter tape and run around your windshield seal and go for a drive. Repeat this process on the sunroof and rear window seals and maybe you can identify the problem.

I have a strong bet it's one of your front brake ducts.

I had a high-pitched whine that only occurred around 100 and went away above 110. Couldn't figure out what it was but I knew it was coming from the front. Fast forward to my oil change, and while I was wrenching underneath, I decided to remove the front lower splash guard tray. One of the brake ducts came loose from the front bumper and it was "whistling" with the high speed airflow. I reattached the brake duct to the front bumper and wheel well fenderliner and the noise went away.

Thanks for the responses so far, everyone! I am at work, so uploading to youtube will have to wait for many hours. I was actually thinking that the sound might be related to aerodynamics myself.

Fortunately the sound is at that speed, because I don't make a habit of driving that fast, and I have first-hand experience of getting caught there, and I don't want a repeat. Still, after hearing this sound I will need to replicate the situation to see if painter's tape or a fixed break duct rectifies the problem.

Time to go to Mexico...

Youtube Video Link

Wow that is loud. I wish I could help :unsure:

I have that same noise. Mine comes in after 120 though