Just had front and rear aftermarket driveshafts installed. Im currently running with only the rear driveshaft to prevent any transfer case detonation, Ill install it on the trail. I have a slight vibe in my steering wheel/gas pedal at 50mph. It would appear that if I had drivelines vibes, I would feel more in the rear? Can the free spinning yokes cause a vibration?

 

You probably have a warped rotor or out of balance wheel.

 

Seems to be too high frequency for that.

 

Free spinning yokes in theory 'could', but I think it's very highly unlikely...

Are the vibes more like a buzz once you get over 45-50 or so? If so, then it's likely the u-joints being out of phase (or wrong differential angle), whatever you want to call it.

If it's just a rapid vibe, then I'd vote that the driveshaft is out of balance.

If the vibe is in the wheels, you can typically tell where it's coming from. And of course it would have vibrated before you had the driveshaft(s) installed.