Any ideas, I have already changed both front wheel bearings on my Vrs but I still have a bearing noise, the noise is a grinding at 20mph then silent at 30-50 then it starts making the wowwing noise.  Initially the noise appeared to be louder going round a roundabout, so I changed the nearside, no different then the offside.  There appears to be no play in the rears and it will also go quieter when towing or going up a steep hill. 

CV Joint????

Tyres?

I have got Rainsport 2's allround and have switched front to back, which made no difference, can't swap left to right as they are directional rotation.  Real strange one, not heard a noise made by a failing CV joint so not sure if it could be that.

Id get it checked out - had the cv split on my old car when the garage had it on the ramp to do the bearing replacement...

Brake disc shield thingy?

The bearings have an inner and outer race, so when you turn, one is always loaded whilst the other is unloaded. It doesn't tell you which side has the bad bearing.

If the car is put into neutral when it is making the 'wowwing' noise, does the noise stop?

The noise is constant when in neutral or with the clutch dipped

Hmm I would check CV joints. Maybe they have run dry on grease perhaps from a previous rubber gatter split. I had this and found inner cv dry.

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Checked the CV joints, they were fine so back to suspecting a bearing????

I assume you have tried jacking the car up and turning each wheel by hand?

 

I had a grating hub on my landrover, I took the wheel off, squeezed back, removed pads and cleaned up the calliper, tapped the rust off the edge of the brake disk with a small hammer, copper slip where it needs it, refitted and went for a drive.. much better!

 

however, I noticed the disks were getting thin, and the pads were halfway down, so I set about changing them. What I found was the inside face of the disk had a series of defects in the face! the braking surface was spalling away, and wasn't far from a nasty incident!

 

moral of story - have a good look, all the way round!  :peek:

 

its also not unknown (on landies) for a loose pad to work its way through the calliper and end up resting on the flange of the disk, where it gradually rubs through the flange!

No play found in rear bearings all smooth, will have to wait to see if it gets worse