In Reply to: E39 Suspension upgrades posted by AllanS on January 26, 2000 at 15:27:08:
I recently bought a 540iaT with sports package and have not done anything yet. However, I have owned several older 5 Series cars and I found changing to Bilstein shocks totally transforms the car without making the ride harsh. It gets substantially firmer and the side to side pitching goes away completely. On my later 528i I also bumped up the sway bar diameters. This made it behave like a slot car on the turns. It had no lean whatsoever, but the down the road street driving still remained civilized and pleasant. I understand that there are some really fine spring kits these days, but I never found them necessary since I don't do that much serious canyon driving. The other thing that helps steering responsiveness is rim width. A 5 series should have a 225 or more tire width on a 7" to 8" wide rim. This reduces the amount of sidewall roll over which also contributes subjectively to the feeling of leaning during transient manuvers.