Perhaps they sag to 1.2 but as far as I know they are 1" all around

 

One of the things Tein trumps about their springs is that they are guaranteed not to sag more than 5mm. If they were to sag 5mm more your drop would be 7/8" front and 3/4" rear

"Spring length is guaranteed not to sag more than 5mm and to be clear of any manufacture defects"

http://www.tein.com/stech.html

 

The biggest concern I have w/ the S. Tech's on my G35 is the balance of the car. The G35C already understeers a bit in stock form. Add the fact that the S. Tech rear springs are a lot softer than the front ones leads to a very poor driving behaviour when driven anywhere near aggressive. However, highway feel is pretty good--a nice soft ride.

I'll be swapping my S. Techs for a set of Tein Flex coilovers soon.

 

I just bough S-Tech, installing tomorrow. I'll take before-after pics

 

No complaints here. Yes, a subtle drop, but enough to improve handling a bit, no more freeway bounce, able to clear speed bumps without scraping, no need to get new struts.

Bat™

 

Anyone have any idea how long the stock stucts will last?

 

Im not to big a fan of springs, on the 350Z, but if u do go with springs buy RSR or Tein. Also don't forget about the added stress on your stock shocks. I personally would get the Tein Basic damper set with 2-way ride height adjustability. They only cost about $780. It's well worth it, think about it 4 shocks and 4 springs.