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2015 Loud and Vibrating 55-65mph

Discussion in 'Gen 3 Prius Technical Discussion' started by 15persona, Jun 18, 2019.

  1. 15persona

    15persona Junior Member

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    A year ago I ran over some large traffic dividing bumps in the road that blew out the left side tires and wheels and also caused some suspension damage. The left front wheel bearing was replaced but the dealer swore that the back one was fine. My gas mileage has never been the same since (43-44 highway at best). It drives perfectly normal under 55 and over 65. Is this a damaged wheel bearing problem or possibly a sign that the transmission or something else is failing? I'm still within my 100k powertrain warranty so I want to be sure it's taken care of by the dealer if it's a problem with the transmission. If another wheel bearing, I will probably wait until the problem gets worse. Thanks.
     
    #1 15persona, Jun 18, 2019
  2. bisco

    bisco cookie crumbler

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    they cannot invoke warranty unless you have dash trouble lights.

    try rotating the tires to see if the sound changes.
     
    #2 bisco, Jun 18, 2019
  3. 15persona

    15persona Junior Member

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    I just had them rotated and it didn't change at all. The Prius is on Michelin MXM4's for what it's worth so I'm pretty confident it's not tire noise. Anything else it might be besides another wheel bearing?​
     
    #3 15persona, Jun 19, 2019
  4. bisco

    bisco cookie crumbler

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    only other things i can think of is bent axle or cv joint, but the dealer being wrong about bad bearings is a strong possibility
     
    #4 bisco, Jun 19, 2019
  5. Grit

    Grit Senior Member

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    o_O
     
    #5 Grit, Jun 22, 2019
  6. Robert Holt

    Robert Holt Senior Member

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    With that heavy an impact on the left side, I would also consider that either front or rear left wheel is out of alignment. Have you considered a 4-wheel alignment? Are you having the beginning of ANY type of abnormal wear pattern on any of your tires? (In my experience of alignment problems , inner or outer tire edges had either abnormally high wear, or even an odd “scalloped” pattern of wear.)
    Good luck, sir!
     
    #6 Robert Holt, Jun 23, 2019
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