You probably got warranty, take it in and have the dealership look at it. More then likely whatever it is would be covered.

ORIGINAL: twinturbomustang

im driving and it sounds to hi pitched for tire could it be drive shaft? its just a vibration its really loud tho i cna drive through it tho after 72 it smooths out anyone eltce have this?

ORIGINAL: tientran

My 2005 V6 got the same problem. The first dealer said it was noise from wind. I took it to the second dealer. The called Ford tech support and then replaced the driveshaft. It is 80 % better. It still has little vibration between 60 and 70 mph. I think the little vibration is due to exhaust resonance; So, I live with the little vibration.

ORIGINAL: undecided.steve

Just a thought,,, if it's exhaust doing it you should be able to rev the engine to the RPM that is the same as the point where you get the vibration and you would feel it, even sitting in park.

FWIW having dealt with vibration in cars over the years, it can be very tricky to track down.
Generally you can feel driveshaft vibration by putting your hand on the transmission hump when you are driving.
(that sounds kinky!!)

If that's the case, worn U-joints are a good guess but since you have a new driveshaft that's out.

Front tire vibration is usually felt in the steering wheel
Rear tire vibration in your butt or the seatback.

I would guess a poorly balanced tire or more remotely a dragging caliper /possible warped rotor.
Try driving up to the offending speed and very lightly stepping on the brakes.
Do you feel any vibration either in the steering wheel?

You might want to try getting the tires high speed balanced.

ORIGINAL: 8cd03gro

nah, the engine runs completely differently when it is under load. Rev your engine and hold it at 2500 rpm's in neutral. Then do the same thing in 5th gear moving and it sounds TOTALLY different. The engine will run alot smoother when you rev it because there is almost no resistance.