Hi, I have looked over the e30 forums, and I haven't seen anyone mention this particular topic on lowering. If this has been addressed, I apologize in advance. I just puchased 4 Bilstein Sports, and H&R Sport Springs (50407) made for the IC. Someone recommended that I purchase Top Hats for an e90 to work out any negative rake. Does anyone have advice or experience with this? Do I need to do this? I was told by some from Pelican Parts that I could pretty much install what I have, and align with no problems. The guy from Pelican Parts had not heard of anyone using e90 Top Hats (or is it Drop Hats). I have also searched other forums, but found only a few people who have done so, and I'm assuming they used them due to more drastic lowering. I would appreciate any advice that is given on this. I'm going to try to do the install sometime over the next week or two.