rumble

hi all,
i keep experiencing an anoying rumble on my freelander td4 hse,it seems to start at around 50 mph onwards.
i had a diff go just after i bought the car which was then replaced but i'm still getting this noise?....
it can only be described as sounding like its coming from the prop..
any ideas???

Hi mate you need to be more specifc about the area the noise is coming from.
Why was the diff replaced? has the vcu been checked and the rumble if under drivers seat area could be vcu bearings

could be diff mounts

i had a bad rumble on mine at 50 after replacing rear diff and vcu..turned out to be faulty vcu prop bearings that were fitted with new vcu. changed them for landrover genuine and vibration disappeared. also check your tyre treads and size are the same all around. If they arent stick the newer/larger on the back chief.

thanks to all that have posted,
i can't be specific about area of noise but it sounds like it is the diff/prop area.
i was told about the tyre thing when i lost the first diff,so i brought 2 new tyres and put them both on the back,the tyres on the front were virtually brand new and i had them all balanced so i think that area is covered
thanks again to you all
how much are vcu bearings?