Hey everyone.
I'm test driving an '06 touring for the weekend (my neighbor is the sales manager at the local dealer). anyway...is the stock supsension usually pretty "bouncy." I didn't expect it to be this much. on my old car, i modified the suspension and it wasn't this bouncy. the only thing i could think of is that the springs were upgraded...but it was used as a corporate fleet lease car, so i doubt the prings were changed. is there a way to verify if it's stock suspension??

 

new car = new rubber in the suspension unit pieces. The tq settings for the bolts that hold everything on, have a 10lb variable; for EX: 38 - 48ft/lbs.

Honestly I'd have all the tq settings on the suspension parts checked and lubed at the dealer.

 

any correlation with the suspension and TCS being on/off?? though i felt it stiffen up just a little after turning it off....could be wishful thinking though. any insight?

 

I would say no correlation, b/c the current Zs do not have any electronic system engaging the struts/shocks; strictly mechanical.

My vote is impropper Tq settings on the suspension parts, and the fact that the suspension rubber is new.

solution: grease and propper tw settings.

 

Over the last 2 years of so, a few 2006 owners have posted that they felt their 2006 350Z did have "bounce", only 2-4 comments come to mind, a drop of mist in the bucket compaired to 2003/2004 owner comments on the same subject. I have driven a 2006 Z myself, can't say I feel it has "bounce". However, I didn't drive on the same road that you did if you know what I mean.

That being said, it is possible that the previous owner might have had a different suspension that they were running and then decided to trade the car in. If that owner had sold off their 2006 oem suspension and repurchased a 03/04 oem suspension and installed that prior to trade in, it would instantly explain your ride and drive experience. To verify if the 2006 Z you drove has it's oem shocks, here are the part numbers to look for on the shocks.

front part number: 2006 350z
WL: 56111 CF 40B
WR: 56110 CF 40B

rear part numbers:2006 350z (hmm rears should be the same numbers, not understanding that)
L: 56211 CF 40B
R: 56210 CF 40B

You can also verify the springs as well
front springs are color coded 1 pink & orange dot.
rear springs are color coded 1 red dot and 1 light purple dot

 

03's def have a bounce to them. My 03 Track was terrible. Replaced the shocks with Konis and it was alot better. My 07 Nismo Z has a better ride/handling than my modded Track.

 

I thought my shocks were blew when I bought the car!!!
It was a boucy ride, even comparing to my TEIN basic on my accord!