Your suggestion was exactly what I've been looking for before I purchased suspension parts for my 2002 325xi (100,000 miles). I thought all along I'd go with H&R because of the slightly more aggressive stance than Eibach. But the "descrete" ride, as you put it, is just too attractive for daily driver. So I'm now tracking the following shipped items:
- lowering perches from supremepowerparts.com (item SUFT015) $70.00 shipped
- 5mm rear upper spring pads from TheBMWPartStore.com 2 x $5.23
- Eibach Pro-Kit Springs from advanceautoparts.com $240 shipped (were 20% off + $50 coupon towards next purchase)
- 3-series Strut/Shock Mount Kit - E46 325Xi/330Xi from turnermotorsport.com
Now I'm saving up for the right shocks/struts to go on sale. With the added drop from the perches and 5mm spring pads, I'm wondering if I could get away with Bilstein Sports. Kubica recommends only using them with H&R. But with this setup it'll be just as low.
This is my favorite car I've owned. It's now paid off and I want to drive it for another 100,000 miles on this suspension!