Originally Posted by Techevo
And the downside to non-adjustables is the inability to tweek the set-up to suit the individual.
Handling and ride quality is very personal and subjective. What one person thinks is compliant, another will find too hard etc
Also, different weight and size wheels and tyres, and different models, i.e. pre/post LCI have different track, vehicle weight etc so will have a different requirement in regards to optimum damping due to changed motion ratios and unsprung weights.
Another factor is if you upgrade anti-roll bars, this will effectively change the spring rates and require different damping.
All true, but companies like BMW, Birds, Hartge, Schnitzer spent 1000's developing suspension systems that work for a particular model of car with engineering teams, professional drivers etc. My point is that a normal bloke with an adjustable system and armed with a screw driver and the but dyno in all likelihood won't get it right.