Proper ride height for Track

GSS138

OK, take a look at my math on this one if you don't mind:

OEM rear spring measures about 10" at ride height. Wheel rate is about 1.61, spring motion rate I am saying is about .63.

Let's assume unsprung corner weight 675 lbs. and for arguments sake a 500 lb/inch spring.

675/(500*.63) =2.13 inches of spring compression. If I use a 9" 500 lb spring. That would mean the spring is only 6.9 inches tall at ride height.

Right?

If that part is right, then the overall ride height at the spring has moved ~3 inches lower. 10(oem length) - 6.9 = ~3

3*1.61 = 4.8. So the top of the tire would come up almost 5 inches(or body would lower whichever way you want to look at it.)

Do I have a mistake in my math somewhere? I am wondering if I measured the OEM spring length at ride height correctly. Will crawl under there tomorrow, but point out any mistake I am making there.

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Current Mods: Vorpal Weapon +5.