Post by
MadSideways »
https://forums.nicoclub.com/madsideways-u3356.html
Thu Oct 03, 2002 4:01 pm
I guess it all depends on if you want comfort or performance.
Eibach springs are progressive rate springs, which means the spring rate changes based on the amount of pressure applied. This is good for comfort, but can be a nuissance for predictability on the track and while drifting. However, because the spring rate is lower under normal driving conditions, they tend to feel more comfortable.
Linear springs are generally better for the track and drifting, because they have a constant spring rate no matter how much pressure is applied. 99% of coilovers have linear spring rates. Typical coilovers are around 5-10kg, and most people will tell you that the ride is somewhat bumpy.
I have yet to see this information on stock s14 spring rates, but the stock mushy s13 spring rates are 1.8kg all around.
So my conclusion, and opinion, is that the KGMM s21 supersport springs, (4.6kg/4.0kg) are probably the best, because they are lower than 5kg so they don't ride like arse. They're linear springs so the spring rate will not change on you. And they only lower the car supposedly 1.6", so they leave plenty of suspension travel.
If anyone has pictures of their car with KGMM springs I'd like to see them myself. I just ordered a set a couple days ago.