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rpmdiag, Tech and Instructor
Category: Mercedes
Satisfied Customers: 7891
Experience:  Since 1975
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Unexplained vibrations, but only at certain speeds.....40,

Customer Question

Hi Unexplained vibrations, but only at certain speeds.....40, 60 MPH acceleration Just had tires balanced and aligned, to no avail
JA: How old are the tires? And have they been a problem in the past?
Customer: Tires from February and no they have not. Town Fair tire did not even want to replace them, when I had them balanced last week.... ;)
JA: What is the model of your '60 Mercedes?
Customer: 2011 E350 Sport Starting to suspect motor mounts now... 104K Miles
JA: Are you fixing your E350 yourself? What have you tried so far?
Customer: No just researching so far
JA: Anything else you want the mechanic to know before I connect you?
Customer: no that's it
Submitted: 9 months ago.
Category: Mercedes
Expert:  rpmdiag replied 9 months ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 9 months ago.

Rotors can also be out of balance, so if you can have the tires balanced again, BUT this this on the car, you may see the problem go away. Not all shops have this special balancer though, so you may need to find one that has one.

Thanks, Ron