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Most Popular Coilover Spring Rates


jdmparts_guru
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I got many questions on coilovers asking me if coilovers are always stiff and bouncy.

So, ...

Not all coilovers are for racing only!

Here is a list of coilover spring rates of some popular coilover systems All numbers are Kg/mm^2 and the lower the number, the softer the ride. I have listed them from softest (near stock) to stiffest.

Generally, the dampening rates are matched to the springs (so soft dampening with soft springs)

(from Near-stock ...)

Tein CS: 8/6

Tanabe Sustec-Pro S-O: 8/6

HKS LS+: 8/8

Ohlins PCV: 9/7

Bridgestone NPG: 9/7

Tein Flex: 10/8

HKS HiperMax II: 10/9

C-One: 12/10

Tein HA: 12/12

Apexi N1 Type V: 14/9

Zeal Function-Zi: 14/10

HKS Hipermax Pro: 16/12

Tein RA: 18/16

(to Extremely stiff)

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I was Told the Tein kit's come with a choice of spring rates...

i.e soft, medium and firm. Is this correct.

Do you know the 3 different rates between the Tein's.

Would you have any information on the NA kit with Medium springs and how they would compare with the factory shocks and springs.

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I was Told the Tein kit's come with a choice of spring rates...

i.e soft, medium and firm. Is this correct.

Do you know the 3 different rates between the Tein's.

Would you have any information on the NA kit with Medium springs and how they would compare with the factory shocks and springs.

Tein NA are not coilovers, but a set of height adjustable shocks + springs.

Tein S-Tech springs

According to Tein's website there are 2 options for the Altezza (IS200 uses the same springs), soft and medium.

Since most springs are progressive (means that they first appears to be relatively soft - and gradually become stiffer- when these are pressed), it is difficult to give a kg/mm figure.

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