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Vibration at high speed

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by BField01, Mar 10, 2015.

  1. BField01

    BField01 Junior Member

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    I have a 2010 Prius with 100,000 miles. It has a vibration that starts at about 70-75 mph and gets much worse at higher speeds. The tires appear good with no unusual wear. Any ideas that would cause this.
     
    #1 BField01, Mar 10, 2015
  2. xpcman

    xpcman Senior Member

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    wheels bearings or tire balance are the normal things to check
     
    #2 xpcman, Mar 10, 2015
  3. BField01

    BField01 Junior Member

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    Thanks xpcman. What about the transmission belt? Could that be an issue?
     
    #3 BField01, Mar 10, 2015
  4. ursle

    ursle Gas miser

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    Err, did you add gummy snacks to the "transmission" belt?

    A bearing would get louder, a tire with a split belt or mud and stones would vibrate more at speed.
     
    #4 ursle, Mar 10, 2015
  5. BField01

    BField01 Junior Member

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    Thanks. There is no noticeable noise. Perhaps a tire going bad then. They all look very good but I'm sure you can't tell about a tire belt issue by looking at them. Tires are nice and clean, nothing in the tread. I'll have them checked out. Thanks.
     
    #5 BField01, Mar 10, 2015
  6. David Beale

    David Beale Senior Member

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    There are no belts in a GIII, transmission or otherwise. In fact, in a Prius transmission no gears actually -shift- and no clutches actuate. It's all computer controlled variable magnetic coupling.

    Most likely either a tyre internal failure (check the inside of the tyres for a bulge) or wheel balance. Wheel balance is the first "shop check". Weights can fall off.
     
    #6 David Beale, Mar 10, 2015
  7. BField01

    BField01 Junior Member

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    Thanks; Ian on my way to a tire shop now. I'll let you know what they find.
     
    #7 BField01, Mar 10, 2015
  8. Easy Rider 2

    Easy Rider 2 Senior Member

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    Along with the tires themselves.
    It is sometimes hard to SEE things like a defect with the belts under the tread.
     
    #8 Easy Rider 2, Mar 10, 2015
  9. BField01

    BField01 Junior Member

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    Thanks to all.
    Diagnosis was separated belts in front tires. New tires installed and all is good once again.
     
    #9 BField01, Mar 10, 2015
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