Strange wurring noise (drivetrain) HELP!!!!

[Tobs]

Just changed my tryes from front to rear because of the tread and since i changed it theres a wurring noise from over 30mph up to 60 and then gets quieter.

Going along at 40take it out of gear - Still the same

Going along at 40 turn engine off - Still the same

Changing into to highest gear in 40 - Still the same (does not follow same rhythm as engine rpm)

all tyre pressure set to 32psi - Still the same

the outer nearside cv joint is on its way out but that was the same before this started

anyone got any ideas at all would appreciate it

[Macnme]

check the tires arnt rotational an on the roung way 1st then it myt just be a case of u distirbin the already fookd driveshaft makin it louder an just thawt are the a lower profile than the pair that were on front ?? hope myt b a bit help ??

[boyleVTR]

you need your wheels balanced