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14 SGT plagued by wobble/vibration

4376 Views 17 Replies 10 Participants Last post by  arathol
Car has 31,300 miles and brand new tires just installed/balanced. Rims checked, no bends. Alignment check is good. Car was built in 2/2014 and in Japan.

There are 2 main symptoms that I'm having. 1st is a persistent vibration in the chassis/floors/seats at highway speeds from 60-80mph. The tire shop says the balance is correct per their machine. 2nd is a wobble felt in the steering wheel under hard acceleration, say merging onto an interstate. It's brief, but definitely there.

My local dealer is pretty useless, so even though the car is under warranty I am probably going to need to use an independent specialist. But does anyone have any suggestions where to start looking?
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The shop I use does have the RFB capabilities, but they use spin balancing primarily. I plan to go back to them, but the wobble under acceleration does not seem like it would be tire related?

Cheap tires were put on the car when I got it, and at least one of them had an issue being out of round. I had all of them returned under warranty and paid the difference for some Continental DWS06s. Vibrations are gone.
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