Originally Posted by Gsedan35

The following is based on your car being a 05 6MT coupe, if that is wrong, please speak up.


Many G35 Basics review's have pointed out a feeling that the setup has a "like stock" ride quality. However, given that the setup uses much stiffer springs IMO saying that it's firmer then oem is really in order. Though what they are saying likely has to do with very good dampning control, which is the key ingrediant to a good suspension. Really, if I were seek out another G owner close to you that has Basics and ask for a ride along.

The following specs differ to reflect how a 05 6MT differ's oem suspension wise. I'm posting the specs so you can see the spring stiffnesses vs stock.

Tein CS (Monotube constructionad, adjustable dampners )
Special Note: A comfort ride system compare to HKS LS.They are valved and sprung to fulfill their intended mission of offering up improved ride comfort. More specifically their valving will impact the performance they can deliver. And to add, revalving them is extremely expensive if you find they are too soft for you. If you want performance, pick a different Tein offering or pick a different brand.
Spring rates 392/392
Stiffer or softer then oem by F+25% R-8%


Tein Basic (twin tube construction, non adjustable dampners )
Spring rates 504/504
Stiffer then oem by F+61% R+18%
If a simple $130 change in front springs is done to 448lbs F+43% R+18%
Side Note: Excellent value at it’s price point, drop's sedan's more then some of us care for.

How does the RS compare to the CS and Basic? The setup would slot in between the two ride and drive wise. Both the Basic and the RS both have many extreamly positive review's that you can search for and read on my350Z.com or on G35driver.

HKS RS (Monotube construction, adjustable dampning)
448/448 F+43% R+5%