I've owned my E90 320D for about a year now and I absolutely love it.
However, during my ownership period, I've had two very annoying issues:
1.) A rattle noise which appears to be coming from the dash when cornering hard.
2.) The doors and general interior creaks are very loud and somewhat embarrassing.
I've read several threads on this forum attempting to cure issue 2; however, I've had so such luck.
That is, until today!
I used the following:
Silicon Spray (transparent when applied no mess)
Bucket soap and water
First I used a sponge with the soap and water and cleaned the door and body rubbers. I then dried it off with the chamois and let it sit for about 10 minutes.
After that, I generously applied the silicon spray on the door and body rubbers while holding the microfibre cloth to ensure I didn't get any over spray.
Finally, I wiped off the excess with the cloth and let the car sit for about 20 minutes to remove any odours left by the spray (the spray didn't really have a strong scent to begin with).
I then took the car for a drive and no creaks!
What a simple fix to such a huge annoying problem! Let's see how long it lasts before I have to reapply.
I am still trying to figure out how to cure issue 1!