[Vwdiesel] confirm or ?

[Travis .]

Have you tried jacking it up on jack stands/car lift and seeing if the noise is still there? If so then that is a good thing to trouble shoot and find it. If not-then it makes it harder but may narrow things down some. The part of the noise going away is what baffles me after 45 MPH. Also-when on jack stands see if either side wheel turns harder. One last then-check your back wheels by spining them. Sometimes noises on a vehicle stink to find since they echo around just right. Just like I couldn't find which front wheel bearing was bad on my 04 Golf until I replaced them both since echoes are so bad to trace. 

Travis