I've had my MS for about a month. I noticed even on the drive home from picking up, that at pretty much exactly 70mph, the right rear tire/wheel emits a sound much like microphone feedback at a lower tone/frequency. I am purplexed on what the root cause is, other than the tire must be hitting some resonance frequency to omit the sound. It is rather loud, and I really must adjust my speed up or down a few MPH to get it to stop. It is not doing this all the time @ 70MPH, and on all roads. So, I'm guessing there is something about the road's surface that is contributing. Maybe if I'm able to record this event and play for the SC, they might be able to tell what it is? Perhaps the tire itself is maybe deective or the sound proofing in it defective ? Suggestion/thoughts ?