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    Vibration at highway speeds ... causes?

    I've got the dreaded vibration at highway speeds the E39 is know for (01 540i/6; 110k/km). So far the front tires, thrust arms with bushings and centre link have been replaced. There was a small bit of play in all of them. The tire shop said the tires were feathered around the outside edges. The vibration doesn't seem to transmit through the steering wheel. Instead it seems to be everywhere and nowhere in particular. I can see the sun visor and head rest on the passenger's seat vibrating at a fairly high frequency. The car is going back to my indie mechanic on Monday. He's good but I'd appreciate ideas on what to look for.


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    Center bearing on driveshaft maybe??






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    Re: Vibration at highway speeds ... causes?

    The most common cause of vibration in the body of the car (as opposed to the steering wheel) is the rear tires/wheels. Have you those (road force) balanced?

    Keith
    2001 530i 5sp


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    Re: Vibration at highway speeds ... causes?

    It's a little complicated. Before the thrust arms and centre link were replaced the wheels were road force balanced. I took it back because of vibration. They rebalanced but said they didn't have to change any weights. The vibration was still there so the car went to my mechanic. We decided to replace some of the suspension parts. Afterwards when I had the alignment done I had snow tires put on at the same time. It's still vibrating but not as much.

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