Aldo ko92

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2011 Mercedes c300 and 2014 Mercedes Ml350
Hello guys so I have a 2011 Mercedes c300 4matic and the car vibrates when I reach 60-65mph and stayes to a higher speed.. sometimes the car does not vibrates at all
Mostly feels like the vibration comes from the rear end but also sometimes feels like the whole car vibrates - I have to mention that the steering wheel does not shake at all.
I do feel the vibration on my seat
Any suggestions?
thank you
Aldo
 

Blobcat

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R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Rear wheels out of balance or as likely as not, “out of round“ from potholes and traffic calming measures
 
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Aldo ko92

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2011 Mercedes c300 and 2014 Mercedes Ml350
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Rear wheels out of balance or as likely as not, “out of round“ from potholes and traffic calming measures
Thank you
I thought about it too but if the tires were out of balance - wouldn’t the car vibrates all the time?
 

Blobcat

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Thank you
I thought about it too but if the tires were out of balance - wouldn’t the car vibrates all the time?
No, the imbalance can have a “resonant frequency” that only shows up at certain speeds
 
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Aldo ko92

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No, the imbalance can have a “resonant frequency” that only shows up at certain speeds
Right I agree
But what I meant was that the vibration sometimes is not even there even if I do 65,75mph or higher speed
You know what I mean? Like the car does not vibrates every time I reach 65 mph or more. And the vibration sometimes is worse sometimes is slight and sometimes is not there at all. If that makes sense. Thank you
 

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