Quote:
Originally Posted by Rick76
What about wheel bearings?
Try rocking the car side to side while driving to shift the weight from left to right. If the sound increases and decreases then could be a bearing.
My one W124 has had a notchy U-joint for at least 15 years but it doesn't seem to cause any vibrations or noises.
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I checked that one too but thank you. Another good point. I learned that one many years ago - just like you said - rock sway that car side to side and listen for a change in pitch / sound. Sometimes, when on a very safe road, I even have done this after I shift to neutral and switch off the engine to really listen carefully. Having a friend do this with you can help with one of you in the back seat for another opinion pinpointing the noise. I even went in the trunk for one test drive!