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      02-23-2009, 09:20 AM   #1
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why are aftermarket suspension components for BMW better than OEM?

Just curious - do they have better testing facilities to design suspension better than OEM? I mean BMW spends millions of dollars finetuning its setups and it goes through hundreds thousands of miles of testing before the product is ready. What kind of research goes behind KW, H&R, Koni, Bilstein, etc?

I'm looking to be convinced why should I stick with non OEM suspension for my 50000 dollar car. I think BMW did get it wrong with RFT tyres though, so I am open to all arguments here.
'98 Blue E36 320i - SOLD '06
'06 Silver E90 320d - SOLD '10
'07 Blue E90 325i - SOLD '12
'07 Silver E86 Z4 Coupe 3.0si - SOLD '16