Wicked shimmy in back end off + on at various speeds- bad tires or ?

Thought truck was going to fall apart at 30 then went away just to come back a little at 55.   Haven't had wheels balanced in decades as the weights always fall off before I get home.   Tread is about gone on one wheel aft.

2 Answers

  • Bill
    Lv 6
    1 month ago

    It could also be an out of round tire, bent wheel, or a bad universal joint. 

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  • Andy C
    Lv 7
    1 month ago

    Bad tread wear on only one tire strongly indicates a bad shock absorber or other problem with the suspension. 

    The shimmy could be bad balancing,  loose/damaged lugs, ice packed inside the wheel,  or even a transmission problem like a failure in the operation of the torque converter.

    A mechanic should drive and diagnose it.

    • it is i
      Lv 5
      1 month agoReport

      As live never replaced the shocks it could be a problem but tread is low because hard to find right size here.  One bad lug but on other side. No ice-80' out.  Transmission possible but book value varies w/ price of scrap metal...

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