When I drive faster than 75mph my car vibrates violently in the front. This is really bothering me because it makes the car feel really unstable when I drive fast, plus it's very uncomfortable when driving long distances (longer than 20 mins). I looked in carfax for my car and saw that the previous owner had work done on the suspension. I was wondering if anyone else had the same problem, or if it's just my car. I've had my car for about 8 months now, and I always just thought it was normal until it started getting worse.

 

It's not normal. Maybe one of the wheels was hit against a curve and bent the rim a little? That could be one reason, but you need to get it checked out

 

Forgot to add:

Also, don't be like the RX7 that forgot to tighten up his lugs!

 

get your wheels balanced.

 

1) Wheels out of balance
2) Out-of-round tire (bulge, egg, tread separation, etc.)
3) Wheel bent

 

or
4)suspension is ****ered!
Peace!

 

And if you have a lot of negative camber on the front, it can make your car feel dodgy and nervous going straight as well, although the Z doesn't allow much adjustment in that area without aftermarket parts.

 

Try balancing all 4 wheels and see what happens, and if the rim is bend, the ballancing mechine will tell you. If its not that, it might be your suspension or any of the tires, because if the tires have a little bump on them, you will feel the car viberating.

 

How old is the car and how much mileage? Unless it's old and high mileage, I doubt it's the suspension unless it was damaged and improperly repaired.

 

Check your nissan knock sensors aside from the suspension.It could not been functioning at all.And about those suspension,I want to know how old is your car.

 

My car is a 2003 with 42,000 miles. I bought it used last year with 35,000 miles on it. I am thinking about taking it to a track for a track day, but i'm a little uneasy about it cause of the vibrating. I will take it to the dealership this weekend. It's still under warranty so hopefully there is something that they can do. But, what if it has something to do with structural damage. For example, what if the persom before me hit something and never fully got it repaired. What could I do about that?

 

I am having a similar problem. I believe it's coming from teh front passenger side. If you figure something out tell me. I am getting the car aligned tomr, cause i've tried everything else.

 

maybe your strut bar is touching your Plenum.

Had the same problem..

 

it's not a steady vibration. At around 75mph (only when cruising, doesn't happen when accel.) it vibrates stops and vibrates again.

 

does it become more pronounced turning, like when changing lanes? can you hear it? might be a wheel bearing... if you lift the car (jack stands or whatever), grab each wheel and see if there is any play on one side vs. the other. if you can jiggle the wheel then the wheel bearing needs to be replaced. an alignment won't fix this issue and my dealer couldn't figure it out, but a local suspension expert diagnosed it in 5 mins.

 

Dude, you're tires are feathered. Go check them and then rotate them.

 

warp rotors can cause the wheel to shake too, dont forget that

 

My Old stealth used to shake terribly at higher speeds. Made driving above 70 unbearable.Took like 5 trips to the dealer to figure it out. Something about the front axle bearing locking up and not letting it flex in the right way..so instead it shimmied from left to right. Replaced the front axle and it was lke buttah thereafter

 

I have the EXACT same problem...
Did you get this fixed? If so, what was the issue.
Any info would be GREATLY appreciated.

Thanks man,
Zod