Vibration issue - can't figure it out, very peculiar
#1
Vibration issue - can't figure it out, very peculiar
It's a 2008 G37S manual.
The symptom is a high frequency vibration that is felt through the stick shift, and the steering wheel. It is not at all like the vibration felt from a warped rotor or a unbalanced wheel. The vibration is a lot like that of one of those massage machines. It only occurs at higher freeway speeds like 70+.
The issue only started to present itself after the tires were changed. The vehicle still uses OEM 19" wheels. Tires were changed from stock to Yokohama S Drive tires. Fronts were increased to 245/40, and rears were increased to 255/40.
I can't figure out the cause for the life of me. Everyone I've talked to about the issue is stumped as well.
Any thoughts on what might be the cause?
or even what I can do to help determine the cause.
Thanks for the help!!
The symptom is a high frequency vibration that is felt through the stick shift, and the steering wheel. It is not at all like the vibration felt from a warped rotor or a unbalanced wheel. The vibration is a lot like that of one of those massage machines. It only occurs at higher freeway speeds like 70+.
The issue only started to present itself after the tires were changed. The vehicle still uses OEM 19" wheels. Tires were changed from stock to Yokohama S Drive tires. Fronts were increased to 245/40, and rears were increased to 255/40.
I can't figure out the cause for the life of me. Everyone I've talked to about the issue is stumped as well.
Any thoughts on what might be the cause?
or even what I can do to help determine the cause.
Thanks for the help!!
#2
Registered User
iTrader: (10)
It's a 2008 G37S manual.
The symptom is a high frequency vibration that is felt through the stick shift, and the steering wheel. It is not at all like the vibration felt from a warped rotor or a unbalanced wheel. The vibration is a lot like that of one of those massage machines. It only occurs at higher freeway speeds like 70+.
The issue only started to present itself after the tires were changed. The vehicle still uses OEM 19" wheels. Tires were changed from stock to Yokohama S Drive tires. Fronts were increased to 245/40, and rears were increased to 255/40.
I can't figure out the cause for the life of me. Everyone I've talked to about the issue is stumped as well.
Any thoughts on what might be the cause?
or even what I can do to help determine the cause.
Thanks for the help!!
The symptom is a high frequency vibration that is felt through the stick shift, and the steering wheel. It is not at all like the vibration felt from a warped rotor or a unbalanced wheel. The vibration is a lot like that of one of those massage machines. It only occurs at higher freeway speeds like 70+.
The issue only started to present itself after the tires were changed. The vehicle still uses OEM 19" wheels. Tires were changed from stock to Yokohama S Drive tires. Fronts were increased to 245/40, and rears were increased to 255/40.
I can't figure out the cause for the life of me. Everyone I've talked to about the issue is stumped as well.
Any thoughts on what might be the cause?
or even what I can do to help determine the cause.
Thanks for the help!!
did they balance the wheel correctly?
have you ever ran into a curb?
you should've went 275-35 in the rear
#4
#7
Just say no!!!!!
iTrader: (14)
In years past, when I first got my z28 (4th gen) at speeds above say 50/60 mph, the car would hum. It wasn't a continuous hum, but cyclic. It was felt all throughout the car, seat, pedals, shifter, etc.. Replacing tires didn't help matters. After some research, it turned out the GM used steel drive shafts on these car (propeller shaft as referred to in the FSM). The problem was, they were not properly balanced. The solution was to either rebalance, or use an aluminum one. I chose the latter solution. The car still had the issue, but the humming was now at 80-90 mph. This wasn't a perfect solution but was acceptable given I don't normally drive at those speeds.
As for the G, if the only change has been tires, then I'd definitely look into that as being the cause. Although I doubt a roadforce balance will fix your problem, it's worth a try. I would think that if you had greatly differing lateral forces at play, the car would pull one way or another rather feel like a high frequency vibration. I would also assume who ever is balancing your wheels is doing a dynamic balance instead of a static.
As for the G, if the only change has been tires, then I'd definitely look into that as being the cause. Although I doubt a roadforce balance will fix your problem, it's worth a try. I would think that if you had greatly differing lateral forces at play, the car would pull one way or another rather feel like a high frequency vibration. I would also assume who ever is balancing your wheels is doing a dynamic balance instead of a static.
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