I was looking into changing my spring rates and can't find any info on them does anyone know where i can get the stock spring rates for the g35 and 350z touring?

 

Spring rates are the some...the only difference between the two are the wheelbases and the shock absorbers. Spring rates and swaybar diameter are exactly the same.

 

Curious, what rate do you want to go to?

Stock spring rates
F/R in lb/in
350Z: 347/419
G35: 357/407

I was told that the G35 coupe and sedan with sport suspension share the exact same spec's. However I find it rather odd that G coupe's don't have red painted struts like my sedan with sport does, their painted black. I'd love to read the part numbers off a set of coupe sturts. And their's the fact that the sedan's struts and springs are slighly taller than the 350Z springs and struts. In any event, the coupe's struts and the sedan's (with the sport suspension) struts are not valved as aggresively as the Z's (as mentioned).

FYI here are the eibach spring rates as listed, they show you the softer initial progressive spring rate then the final rate.
350Z 1"front 1"rear 6364.14 296/384 front 316/421 rear
G35s 1.1"f 1.1"rear 6363.14 259/334 front 359/413 rear
G35c 1"front 1"rear 6365.14 229/337 front 274/463 rear

Notice how the g coupe application get softer initial progressive rates than the sedan, very wierd.

BTW, your next climb of the spring rate ladder would be the HKS coilovers at 472lbs front and rear (carefull G coupe application may use softer rear rates and different valving rates in the dampeners).