Yesterday, we disassembled the rear axle. Removed all the partially worn bushes, and replaced with Powerflex bushes where available. All other bushes are ordered at BMW, and will be delivered tomorrow morning.
We discovered a few very weird things. Maybe some of you already noticed, but my car was a bit lower on the right rear side. Well, the springs don't have the same height anymore. They are not broken, but they're just not of equal length

I already thought about getting a Bilstein PSS9 kit, so I ordered it right away.
The car has no rear stabi

I've never driven a car with better grip, road contact etc than this car. And it has no stabi... I bought the car last year, brought it to BMW Belgium for homologation, they said it was OK. Then went to the Belgian technical inspection, they said it was OK. Then I started modding, did 70 Ring laps, went to the technical inspection again, they said it was OK again. Modded a bit more, did another 10 Ring laps, car felt great again. And now we notice the rear stabi hasn't been there the whole time. Very weird. Is this stabi really needed? I've had passengers being surprised about the huge amount of grip of the car all the time. Can someone explain this?