Cyclical Vibrations @ Highway Speeds

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by SucioWayne, Aug 12, 2019.

  1. SucioWayne

    SucioWayne New Member

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    2016 Prius
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    Three Touring
    Hey Everybody,

    First Prius (2016 Prius Three Touring w/ about 30K miles) and first post. Appreciate any/all help & direction anybody can provide :).

    Bought my CPO Prius late March. Ever since I've had the car, once I hit about 68MPH or faster there's this cyclical vibration that starts to happen. The vibration is about 1 second long and gets faster (about 2-3 vibration 'cycles') until about 74MPH and then the vibration starts to elongate. I just brought it in for the 5K checkup and the dealership said I'd need to come back and do a drivers test for them to check it out.

    I've tried looking in forums a little bit, but didn't see anybody describe this issue. I thought it might be the wheels out of balance, but I've had other people more car-savvy than myself who've heard/felt it and they didn't think this was the problem.

    Genuine thanks for reading through this and appreciate the help!
     
    #1 SucioWayne, Aug 12, 2019
  2. booke02

    booke02 Active Member

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    Wheel balance?
     
    #2 booke02, Aug 13, 2019
    will the engineer, krmcg and alanclarkeau like this.
  3. alanclarkeau

    alanclarkeau Senior Member

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    Wheel balance? Worn tyres?
     
    #3 alanclarkeau, Aug 13, 2019
    will the engineer and krmcg like this.
  4. SucioWayne

    SucioWayne New Member

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    Three Touring
    Tires are new, but I’ll definitely ask them about the tire balance. Sorry, CPO = certified pre-owned.
     
    #4 SucioWayne, Aug 13, 2019
    booke02 likes this.
  5. SucioWayne

    SucioWayne New Member

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    Three Touring
    *Wheel balance
     
    #5 SucioWayne, Aug 13, 2019
  6. kithmo

    kithmo Couch Potato

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    Sounds like the tyres, not necessarily unbalanced but may be out of round. Temporarily, try upping the pressures to max and see if it still does it. Are they all the same tread pattern ?
     
    #6 kithmo, Aug 16, 2019
    alanclarkeau likes this.
  7. will the engineer

    will the engineer Active Member

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    that sweet critical speed of rotation

    check back with us after looking into the unbalanced wheel
     
    #7 will the engineer, Aug 16, 2019
    krmcg likes this.
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