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14 SGT plagued by wobble/vibration

4374 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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If it were me I'd like to see the wheels spin on a roadforce machine to see if there is an underlying issues with the tires or to see the rim's rotate (to rule out the wheels 100%). From there, I'd suspect a slightly out of balance drive shaft. My 2010 had something very similar - - so try that. Good luck!
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And as a reminder, anytime you get new tires avoid hard braking and be easy on the gas. The tire can slip on the rim for the first week or so, hence why when you get new tires there doesn't seem to be any vibration, but after a few days that changes.
When cars are manufactured, they tend to sit in a compound before being delivered, hence why it isn't an issue.
Too bad wheels didn't have like an automatic balancing sensor that could move a weight on the wheel to ensure its smooth at all times....guess that would but tire company's out of business.....but make a lot of car owners happy - especially people like me who are very sensitive to these types of things.
:)
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