Schu, if you
do decide to replace the bearings, get the real thing. While fitting the Konis and Abbott springs to mine, I decided that I would replace the bearings as a precaution. Saab ones cost a fortune, so I bought some from Euro Car Parts for £26 each. Nice. However, having a problem with ride height (being slightly higher at one side than the other), I took the struts apart again to make sure everything was seated properly. I found the bearing insert inside the metal part was rattling up and down. Both sides. Not having time to get some more and replace them, I put them back.
It took me ages to get round to doing them properly. Until, in fact, I got an LSD fitted and was getting wheel-tramp at the (now higher) limit of traction. I decided to get rid of the play in the bearings. I swallowed hard, bought the Saab ones and fitted them. The wheel-tramp all but disappeared. Not only that, but the ride height is now equal on both sides.
On examination, the cheap ones now had a small amount of grease leaking from the bearing seals. The annoying thing is that there was probably nothing wrong with the original ones.