Question 08 rear end vibration

[Bewlay]

Have a vibration coming from the rear at about 90 km but only for the first 5 km I drive it then it goes away.

 

[Rruuff Day]

Any noise with the vibration? Can you feel anything in the steering wheel? Tires? Flat spots maybe after she sits? Park her on 18 inch, 2 inch thick styrofoam. Check drive train fluid levels? Those would be the simple things to try.