Spring rate


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an93l

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Oct 13, 2008
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I currently have a Integra R and i had some D2 coilovers from the previous owner and its leaking and is now looking at the koni yellow with custom eibach spring. Im not sure what spring rate to get for front and back from 250, 350, 430 and 545.

I read that from a few article that the stiffer spring rate at the front gives understeer while another says gives oversteer. So im abit lost on this can someone correct me and let me know.

I want was planning on a set up that can give me slight over steer and is looking at 430f and 430r. What you guys think?
 
it depends on all your other suspension mods, tire choice, and even tire pressure, and driving style.
 
Stiffer springs will reduce grip on an axle, so stiffer rear = oversteer, stiffer front = understeer.

Since everything else is stock, I would go with the 350 rates as long as you don't plan on lowering much. Stiffer springs do not automatically improve your handling, and if you drive a lot on bumpy roads will actually reduce performance.

If you want slight oversteer, then go with a slightly higher rear rate, but bear in mind that ride quality is largely dictated by the rear spring rate, so don't go too mad.
 
Kozy said:
Stiffer springs will reduce grip on an axle, so stiffer rear = oversteer, stiffer front = understeer.

Since everything else is stock, I would go with the 350 rates as long as you don't plan on lowering much. Stiffer springs do not automatically improve your handling, and if you drive a lot on bumpy roads will actually reduce performance.

If you want slight oversteer, then go with a slightly higher rear rate, but bear in mind that ride quality is largely dictated by the rear spring rate, so don't go too mad.
Click to expand...

Ahh thanks for the info. How abt getting a thicker rear sway bar do i need to change my subframe? I was thinking abt the cusco rear sway bar 25mm
 
Kozy said:
Stiffer springs will reduce grip on an axle, so stiffer rear = oversteer, stiffer front = understeer.

Since everything else is stock, I would go with the 350 rates as long as you don't plan on lowering much. Stiffer springs do not automatically improve your handling, and if you drive a lot on bumpy roads will actually reduce performance.

If you want slight oversteer, then go with a slightly higher rear rate, but bear in mind that ride quality is largely dictated by the rear spring rate, so don't go too mad.
Click to expand...

Ahh thanks for the info. How abt getting a thicker rear sway bar do i need to get a subframe brace? I was thinking abt the cusco rear sway bar 25mm
 
I don't think you should need to brace the subframe on a DC2, they'll have a pretty thick one as standard IIRC. Might want to check on ITR-DC2.com though.

I wouldn't go for a thicker bar if you go for a heavier rear spring rate though, a bigger bar would be good for allowing you to use a softer rear rate for ride quality, something like the 350 front, 250 rear plus a 25mm rear ARB would be good. (This will most likely still be more oversteer biased than 350/350, and possibly even 350/430 with stock bars!)
 
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