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Discussion Starter · #1 ·
Has anyone performed measurements of the Mazda3 suspension system to calculate bounce frequencies? I'd like to do some desktop engineering and figure out spring rates and sway bar calculations, as I figure out my next project car.
 

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All you really need are the corner weights and motion ratios.

Motion ratio: Front (strut) ~.95, Rear (spring cup) ~.7

Corner weights: depends. The Gen2 Skyactiv I have was roughly 900lbs per front corner, 550 per rear corner.

Never bothered to calculate for stock springs, but I came out to 2.0Hz being achieved front and rear at 8kg/mm front and 7kg/mm rear springs.
 

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Discussion Starter · #3 ·
That's awesome, exactly what I was looking for! I'm trying to find the right Mazda3 for me, and I want to add coilovers.
 
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