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VIbration at 75-80MPH - Bent Rim?


earthprime
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My Ford Fusion (40k miles) experiences a slight vibration around 75-80MPH.  I can feel it in the passenger seat, and very slightly in the steering wheel.  I just had my vehicle in to the dealer and asked them to take a look - we replaced all four tires, balanced, and aligned.  The vibration is much better, but still detectable.

 

Do you have a recommendation for what else might cause a vibration around 75-80MPH.  85MPH and it smoothes out again.  I asked the dealer to check if one of the rims are bent, but I don't think they actually did.

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1 hour ago, earthprime said:

My Ford Fusion (40k miles) experiences a slight vibration around 75-80MPH.  I can feel it in the passenger seat, and very slightly in the steering wheel.  I just had my vehicle in to the dealer and asked them to take a look - we replaced all four tires, balanced, and aligned.  The vibration is much better, but still detectable.

 

Do you have a recommendation for what else might cause a vibration around 75-80MPH.  85MPH and it smoothes out again.  I asked the dealer to check if one of the rims are bent, but I don't think they actually did.

 

Hi earthprime. More information might be helpful. How long have you had your Fusion? Did you purchase it new? Model, engine, AWD or FWD? Did this begin recently or has it occurred since new?

 

Generally speaking, a vibration due to a bent wheel would not be smooth at 0-~74MPH, occur at 75-80MPH, then smooth out again at ~85MPH. A situation like that is usually more likely due to out of balance wheels/tires. Did the Dealer perform a Road Force balance on your wheels/tires, or do an old fashioned balancing? If they only did an old fashioned wheel balancing, you may want to have a Road Force Balance performed. Have you tried rotating your wheels to see if the vibration seems to change/increase/lessen?

 

Could even be an engine/driveline imbalance.

 

Get back to us with more information and good luck.

 

 

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I had a similar issue awhile back in a 92 Grand am. At 40-50 the wheel shocked violently enough that it was difficult to control but above 50 got better. I think it ended up being a wheel bearing. Just food for thought. At 40k I would think tires but you replaced them. Don't know enough about wheel bearings to tell you anything maybe some one else can chime in.

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