Tire Valve Caps, Tiny!

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Russ Bohn, Oct 16, 2017.

  1. Russ Bohn

    Russ Bohn Junior Member

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    I checked my air pressure for the first time the other day.

    It is a near art form to get your fingers in the wheel cover slot to screw off the valve caps, and its almost worse putting them back on. The tire valve caps are small and cheaply made. I had three fall into the wheel covers. I took one of the covers off but discovered the caps rolled under the car. I moved the car and found two, the third I did not find, but near the air station, I found another driver's discarded cap, much bigger and it was far easier to manipulate. I suspect the 3rd cap now may be part of the braking system!
     
  2. ChapmanF

    ChapmanF Senior Member

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    Even though they have holes for the stems to poke through, I just pull my wheel covers off to add air, then put them back. It's quick, and access is easy then.

    I've got one of these thumb-release air chucks that just doesn't always want to seal well if I'm trying to wiggle it on through the wheel cover hole, anyway.

    -Chap
     
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  3. DavidA

    DavidA Prius owner since July 2009

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    Valve cap access is one of several reasons I have never had the wheel covers on the wheels.
     
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  4. jungleland1972

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    Glad I am not the only one. I have checked the tires pressure twice and have lost 2 caps already (but found one in the driveway days later after it apparently rolled out from the wheel cover).
     
  5. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Maybe a short piece of vacuum hose, if you can find the right inside diameter, would help: push it over the valve cap and unscrew, lift out?
     
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  6. Bob Comer

    Bob Comer Active Member

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    There's a socket size that fits the caps perfectly and I use a socket screwdriver. It's tight enough that the caps stay in the socket so you don't lose them and for ease of putting them back. If anyone's interested in the exact size, I'll go out to my car and check.
     
  7. priuscatprimeguy

    priuscatprimeguy Senior Member

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    ok, do that:D
     
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  8. priuscatprimeguy

    priuscatprimeguy Senior Member

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    please:cry:
     
  9. Bob Comer

    Bob Comer Active Member

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    IMG_0201.png
    11/32 is the size and in case I wasn't clear, here's a pic.
     
  10. priuscatprimeguy

    priuscatprimeguy Senior Member

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    thanx:D
     
  11. Bob Comer

    Bob Comer Active Member

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    You're welcome!
     
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  12. jdenenberg

    jdenenberg EE Professor

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    My other problem is that my air compressor will not reach into the hole and provide an air tight fit. One solution is to temporarily attach a valve stem extension (they stick out too far to leave then permanently attached) and then checking the psi and adding air are no longer a problem.

    JeffD
     
  13. Mark57

    Mark57 2021 Tesla Model 3 LR AWD

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    Don't put the whole air compressor into the hole . . . . . Kidding, sorry you left that one wide open. ;)

    The extensions work well. This is another reason I removed my wheel covers.
     
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  14. Andyprius1

    Andyprius1 Senior Member

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    Very ingenious
     
  15. RRxing

    RRxing Senior Member

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    Just think of the weight savings using these tiny caps... :rolleyes:
     
  16. ChapmanF

    ChapmanF Senior Member

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    Doesn't screwing the valve stem extension on and then off again soak up more time than yanking the wheel cover off and bopping it back on when finished?

    -Chap
     
  17. Andyprius1

    Andyprius1 Senior Member

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    What surprised me is how easy the wheel covers come off. Grab each side and pull. and done.
     
  18. jdenenberg

    jdenenberg EE Professor

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    But:
    • It doesn't cause bruises on the heal of my hand. (getting the wheel covers back on)
    • It doesn't shorten wheel cover life. (My 2004 wheel covers broke about halfway through their life from the stresses of on/off)
    JeffD
     
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  19. Skylis A

    Skylis A Senior Member

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    I've already yelled at two of my tire caps... and then at a third cap that vanished even after rolling the car back and forth :mad:

    I seriously am nervous about bending/braking/snapping these pizza covers by "doing it wrong" on my own. So, I'm grabbing two of the five handles, through triangular openings, and then pulling straight out, firm and hard, normal to the plane of the wheel? Would that damage the overall shape of the cover? And there's no twisting involved, just pull? What about putting them back on?
     
  20. Lucifer

    Lucifer Senior Member

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    As others have mentioned, leave the plastic covers off, filling the center hole of the rim can be done with a Toyota part ($$$) or a 2$ 1 1/2” electric panel plug, you need to check tire pressure monthly, the plastic covers will suffer, save them for trade in time. (I pop them off with a screwdriver)
     
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