+1 on what Richard said.
In addition, check if the springs are locked in correctly. I just experienced the same issue after installing H&R springs for my buddy's 328, we ended up taking the car to the dealership since we cant figure out what's wrong, and the Tech found out the springs weren't locked in.
Originally Posted by PapaKlix
I did this install over the weekend (h&r race springs), pretty easy job but now there is a very noticeable sort of clunking sound on every bump coming from the front of the car. at first, i kind of thought i might not have shut the hood all the way. did this happen to anyone else? any ideas?