330Ci traction issues with rear left wheel.

As per the title, my car is serious struggling with traction only to its rear left wheel. It doesnt matter on the weather, either, however in Surrey UK we had about 1 inch of snow yesterday and the car could barely move - I got stuck on a hill with about a 3 degree incline :lmao:. I have driven the car in the snow and its been absolutely fine in the past but since then i have changed the car to HSD coilovers. (it is pretty low, no shims on the back just the inner bit of the cups/threaded bit)



Over the past 6 months or so the car has been struggling with grip to that rear left wheel, if i turn right out of a junction and give a tiny bit of power the wheel looses traction. This can be in the dry or in the wet. I could even just be driving on a straight road and go to accelerate and the left wheel will just spin, I never have issues with the rear right wheel but then I am always in the car...



The tyres arent the issue as they are pretty new. As far as i can see the car sits pretty evenly although i have never have it properly corner weighted as i lowered it myself. Could it potentially be caused by weight imbalance? Or could there be an issue with the diff causing more power to be fed to that wheel :confused: If you guys can think of anything to check that would be a starting point!!



Cheers :thumbsup:



Edit: The car is 2004 Facelift, if that helps!