From mile #1, I have had this noise that suddenly appears at 90MPH
under light throttle. It more or less doens't exist unless you are
cruising at that speed with a steady throttle. If you take your foot
off the gas at 95MPH and let it coast down, there is no noise. It also
doesn't happen if you accelerate through 90MPH on the way to something
higher. The noise seems to be coming from the rear. It happens with
the stock tires and with my Dunlop 3D snows too. (although I think it
may be louder with the snows) The problem with getting the dealer to
look at these things is that they don't want to drive the car that fast
or be a passenger at that speed. It is hard to believe that this noise
could be normal. It cuts right through the stereo when it is up
somewhat loud.