Hi, I've had my 6mt sedan for a few months now and have 7k on it. What I have noticed since getting the new ride is that the steering wheel shimmies or vibrates noticebale when cruising between 100 - 120 k or under hard acceleration.

I've had the wheels balanced 3 or 4 times now and the brakes have been inspected and there is no rubbing. Alignment is fine coz it drives straight as an arrow.

Could it be that the sport suspension just translates more road feel through the steering wheel? Would that be enough to make the wheel vibrate noticeably? Do any other 05 6mt sedans have the same issue?

Any comments would be appreciated.

Thanks

 

I have an 04 coupe 6mt with sport tuned suspension. I can tell you it is rock solid with no vibration etc at any speed so what you're feeling doesn't sound right. Hopefully you hear from some other '05 rides to confirm your issue or not. Since you have this problem under hard accleration also is it possible that this is a drivetrain issue rather than a wheel/tire problem???
If you haven't already you may want to post in the sedan forum to broaden your reach.

Good luck.

 

I own a 05 G35X sedan, and it is very stable, It's not the exact model you are looking for but it is the 05 sedan. I have no shimmy or vibration at any speed, I have been impressed with how smooth it does run.

 

I have '04 with sport suspension (well.... b4 mods)
& no such issues.

What method did they use to balance?
Did they check for wheels out of spec.? (true & round)

Also have heard of adjustment to stearing box (TSB?)
for something similar.

 

Well, it was the dealership that actually did the balancing and they have a pretty good rep on this board, so I assume that they used the proper method of doing the balancing.

Tires were fine as well; apparently no belts have shifted.

The vibration occurs with both my winter rims/tires and summers. I got the car Feb 1 and switched to winters immediately and the shimmy was there. When I swtiched back to summers 3 weeks ago, same thing.

Not sure I heard about the TSB to the steering box. Any links to it? The only link I have to G maintenance recalss is:

http://www.infinitihelp.com/Infiniti...s/G35/Year.htm

 

I have the same issue currently on my car. Was perfect before I put on my sway bars and rotated the tires. I'm thinking my shake has to do with the tire rotation though. I'm just too lazy to put them back the way they were to see if that is the issue. Maybe when it gets warmer.

 

Not sure if this is even related or a separate issue. My car seems to be twitchy at speed. I assumed it was the low profile tires and/or sport suspension. The car drives dead straight so it's not alignment but I find it does need a lot of correective action when the road gets a little bumpy.

 

Welcome to the world of owning a sport coupe or sport sedan. It's just very responsive to both driver and road input. No sweat.

 

What does "responsive" and "twitchy" mean though? If you release the steering wheel whil driving and you see it moving up and down, is that supposed to be expected behaviour?

I can understand feeling the road input through the steering wheel but I don't think it should extend to seeing the the steering wheel vibrate...

 

kkj123 that response was meant for gforce. Responsive means promptly reacting to your steering motion or to road surfaces. Twitchy was a word used by gforce which I would imagine was meant as an exagerated form of responsive.

What you are describing as your problem would not be the same thing as being either responsive or twitchy. Vibrating or shimmying steering wheel under acceleration or at highway speed suggests some type of problem that needs further diagnosis. That definitely is not normal. Since it does this with either set of tires that likely eliminates that source although it is possible one defective/unbalanced wheel or tire from each set is the cause. What does the dealer say about it since you were having the problem after balancing and trying both sets of wheels? I would park it there until they determine the cause while you drive their loaner vehicle.
Good luck.

 

Tire rotation, hmmmmmm, I was told that my tires were unrotatable as they were directional or something like that. I believe my tires were stock. Just a athought, sorry to hear about your difficulty.

 

I agree with RBull's explaination of my 'twitchy'. I tend to agree the car is being very responsive to my input and the road. Being my first "sport" sedan I am not used to such feedback and I guess just need to get used to it.

 

i love it and actually would like it much more "twitchy" so the tiniest input would move the car.

 

dun know about twitchy......
But it made quite a difference in my car when I added the 350Evo rear sway bar.
The understeer is greatly reduced, & much more neutral now.
It's almost like you just have to think turn & the car reacts....I just love the change.

 

Ian

Where did the 350evo come from and is that an ok mod on otherwise stock suspension?

Deane