my 318s collum would make a kncking noise when i hit small bumps or occasionaly while turning.
where the two steering collum shafts come together there seems to be some play in a vertical motion..atleast in my 318. so the two pieces of the collum would knock.
i dont have a fix for it..but if u take off the panel by the pedals and tr to shake things around to see if thats whats making the noise.
__________________
We all get the urge...Saturday early morning...nothing to do till noon...

BMW FTW

The aural sensations of 1st gear WOT
**CGM **(Certified Garage Mechanic)