I have a jag xf 2011 3.0d. I have a grinding type noise front near side wheel. I have changed wheel bearing, discs and pads but the noise continues. when I take the foot off the gas and the car decelerates. Happens more so after car has warmed up.
What could it be?

 

Or it could be the differential unit?

 

Thanks. I shall get it looked into… so frustrating…. U have to ask is it worth ripping a car apart for a noise or do I leave it??

 

Never ignore something what your car is telling you. It must be fixed right away. My reply to you is one of the many causes of grinding noise under the chassis. It could be a simple fix or an expensive one. In order to pinpoint the problem your car must be raised by a lifter similar to this where the wheels can spin freely or have it check by a mechanic who has comparable equipment such as this. Good luck