Is anyone running these springs? The spring rates look good and they transfer more weight to the rear....I'm curious to know more about them. Thanks.

 

Lowering these cars can be a rather tricky affair to say the least.

They would lower your coupe at least 1.5"/1.7". Word to the wise, their is one negitive review of these springs on my350Z.com from a 350Z owner running them. And aftermarket alignment correction expences are a issue.

"I have them and the car bounces like hell on the freeway and I'll scrape the tail pipe once in while and my alignment is completely shot to hell. To correct the alignment I need to get a camber adjustment kit, which runs between $700 and $1500."

"It handles great but its got some bump steering issues. Performance Nissan couldn't get it back into alignment."




As a progressive spring, that feature is usually a compromise built in to prevent bounce. I have a feeling it may actually be the cause in this case however. I wonder if they operate in too narrow a window between the softer initial spring rates and the higher final rates. Can't really say unless I drive the car myself.

Even if the above review's shocks aren't in perfect condition, he did note a change for the worse when the spirngs were added. For you, even if you have a 05 coupe with the sport suspension and it's stiffer shocks, theirs a good change you would have a simular ride and drive quality. Most certainly if your on the standard coupe suspension's weaker shocks.

 

Excellent information. Thanks for the help. I think i'll stick with the H-techs for the 350Z then. Seems like a safer route to take...

 

I know this is an old thread. Not to beat a dead horse, but since I have the GF210's and am going to get coilovers before I put on some 20", I thought I'd chime in.

The drop on my car from the GF210's seem to be 1.6-2.0" - an extreme drop. At this kind of drop, regardless of the springs you use, you're going to have alignment issues. The GF210's rates are very close to OEM G35 rates, only a little stiffer, which is why I got them in the first place. The other reason was the extreme drop. My camber was well above -2.0 degrees (I don't remember the exact number).

There is some bounciness, and I wish I could compare it to other springs, but I think the bounciness is coming from the extreme drop coupled with the OEM shocks.

In any case, I can't recommend these springs. You're better off saving your money for coilovers, or getting a set of springs that drop you around the 1" mark or less.