I hope your comparing Bilstein Sports with Koni Adjustables. Because Bilstein heavy duty's are often mistaken for Bilsteins top line of dampers.
Bilstein only makes the "Sport" damper for a small selection of automobiles. If you look at Bilstein's catalog, all or most Japanese imported cars only have Heavy Duty dampers available and not the Sport. Heavy Duty is best for stock or slightly lower springs, which is what the quotes you provided suggested. Could this be the one you're talking about? In this case, most owners of Japanese imports will definitely choose Koni over Bilstein as they have the sportier and stiffer shocks. For E36, I have heard nothing good about the KONI dampers, but only good things about Bilstein Sport. Some people on BMWPlanet a while back even complained that the KONI's were too stiff for street use, and that the shock travel was too short so they were bottoming out. Bilstein recommends you do not use HD dampers for lowered springs, therefore if E30 owners only have the "HD" dampers availble to them, it would explain why they blow in less than a year.
Bilstein Sport/Heavy duty shocks have been used on BMW's for many years. I think your letting your obsession with slamming your car get to you. It's a good thing to lower your car a little for the street. But if it's not a full out race car I don't see the point. Lowering the car too much puts A LOT of stress on the chassis and suspension components.
'02 C32 AMG / '07 C280 / '07 CLS550 / '15 JKU Rubicon
Last edited by Autotechnica; 12-26-2003 at 07:38 PM.