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Originally Posted by chaudanova
Does anyone know, from theory or first hand experience, whether adding weight to the suspension with these heavier arms, would cause a slightly slower response and adverse handling characteristics? Perhaps Insite can chime in...
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Here you go
http://en.wikipedia.org/wiki/Unsprung_weight
Basically, the momentum involved with movement of the suspension parts in reaction to road features can work against the desired motion of the suspension, therefore, less mass, less undesired motion. Can you feel an increase in unsprung weight? It depends on the degree of increase. Does it matter? Absolutely. The tradeoff being that lighter parts are typically less resistant to bending or damage, this is definitely the case when comparing steel parts to aluminum ones.