Forum Discussion

abc40kids's avatar
abc40kids
Explorer
May 14, 2015

Valve Stem Issue.....

So I'm upgrading to G rated tires and I ordered metal valve stems rated at 110psi. The problem is the rubber on the back of the stem wont go thru the valve hole on the wheel...

I also have rubber valves with metal sleeve rated at 80psi that fits... The E rated tires that came on my 5er were rated at 80psi so I'm thinking my G rated tires at 80psi will be much better than the E rated at 80psi. I'm not really wanting to go even 100psi on these stems rated at 80psi. What do you think....

I do have some other metal stems on the way today but they will probably be the same rubber. They make a 100psi rubber stem but once again the base is too wide. I did check my wheels and they are rated at 110psi.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    May 14, 2015
    abc40kids wrote:
    So I'm upgrading to G rated tires and I ordered metal valve stems rated at 110psi. The problem is the rubber on the back of the stem wont go thru the valve hole on the wheel...

    I also have rubber valves with metal sleeve rated at 80psi that fits... The E rated tires that came on my 5er were rated at 80psi so I'm thinking my G rated tires at 80psi will be much better than the E rated at 80psi. I'm not really wanting to go even 100psi on these stems rated at 80psi. What do you think....

    I do have some other metal stems on the way today but they will probably be the same rubber. They make a 100psi rubber stem but once again the base is too wide. I did check my wheels and they are rated at 110psi.


    OP stated his rims are 110 PSI rating.

    OK..if true

    BUT why upgrade tire to G614 110 PSI 3750# and only run them at 80# because of wrong valve stem.

    GO to a tire shop and get 110 psi valve stems that properly fit your rims.
  • MTPockets1's avatar
    MTPockets1
    Explorer
    May 14, 2015
    If the rim is rated for 110 PSI then simply get the correct valve stems. No way would I recommended using an 80psi stem with the G614 tires. Do it right the first time.
  • laknox's avatar
    laknox
    Nomad
    May 14, 2015
    ksg5000 wrote:
    laknox wrote:
    First question; are your =rims= rated for 110 psi? If you're only upgrading tires, your rims may not handle the G's, hence the difference in stem hole size. Rims should be stamped on the back side of the bead or in the "valley" inside, which means you'd have to break a tire down to check.
    Lyle


    Never owned trailer/fifth wheel but that's the first question I would ask on Class A/C. When I upgraded tires on Class C I was told to make sure that I kept air pressure at lower rating otherwise I risked blowing up the rim and possibly injuring the guys who maintain my tires.


    If you're going to "de-rate" the tires by inflating them only to 80 psi, then why get the GY tires at all? Save a bunch of money by going to Sailun tires, if you're determined to get G tires. Save even more by going with Michelin Ribs or Bridgestone Duravis R250 in E-rated 16" tires. Just my $0.02...

    Lyle
  • ksg5000's avatar
    ksg5000
    Explorer
    May 14, 2015
    laknox wrote:
    First question; are your =rims= rated for 110 psi? If you're only upgrading tires, your rims may not handle the G's, hence the difference in stem hole size. Rims should be stamped on the back side of the bead or in the "valley" inside, which means you'd have to break a tire down to check.
    Lyle


    Never owned trailer/fifth wheel but that's the first question I would ask on Class A/C. When I upgraded tires on Class C I was told to make sure that I kept air pressure at lower rating otherwise I risked blowing up the rim and possibly injuring the guys who maintain my tires.
  • laknox's avatar
    laknox
    Nomad
    May 14, 2015
    First question; are your =rims= rated for 110 psi? If you're only upgrading tires, your rims may not handle the G's, hence the difference in stem hole size. Rims should be stamped on the back side of the bead or in the "valley" inside, which means you'd have to break a tire down to check.

    Lyle
  • johntank's avatar
    johntank
    Explorer
    May 14, 2015
    A few years ago when I replaced my rubber vale stems with metal vales (Milton) they came with two sizes of grommets as they called them one for a 5/8" hole (large) and a smaller one for a .453" aprox. a 7/16" hole. This Might help you get the ones you need.
  • RustyJC's avatar
    RustyJC
    Explorer
    May 14, 2015
    IIRC, there are two sizes (throat diameters) of metal valve stems. Sounds like the one you have is too big. Without doing an internet search, my recollection is that the smaller size is just under 1/2" diameter (something like 0.455" or so) - what diameter are the ones you have?

    Rusty
  • ford_truck_guy's avatar
    ford_truck_guy
    Nomad
    May 14, 2015
    abc40kids wrote:
    So I'm upgrading to G rated tires and I ordered metal valve stems rated at 110psi. The problem is the rubber on the back of the stem wont go thru the valve hole on the wheel...

    I also have rubber valves with metal sleeve rated at 80psi that fits... The E rated tires that came on my 5er were rated at 80psi so I'm thinking my G rated tires at 80psi will be much better than the E rated at 80psi. I'm not really wanting to go even 100psi on these stems rated at 80psi. What do you think....

    I do have some other metal stems on the way today but they will probably be the same rubber. They make a 100psi rubber stem but once again the base is too wide. I did check my wheels and they are rated at 110psi.



    I do not see a problem with airing them to 80 max... but that would lower their carrying capacity.. I would try to get the proper metal stem before lowering the pressure.
    Per the Goodyear site.. at 80 psi the max load is only 3042# versus the 3750 @ 110psi

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