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air pressure 16.5"

Discussion in 'The Garage' started by skelly1, Apr 30, 2004.

  1. skelly1

    skelly1 1/2 ton status

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    air pressure 16.5\"

    So, I put the 16.5 wheels with 35 MT's on the K5. It is now officially 3/4ton. I'm looking for a D60, just haven't found one yet. Anyways, I am going wheeling on sunday, and the trail is kindof long, not all that difficult, and I want to air down the tires. I am used to 15" wheels, so I've never worried about popping the bead on the K5. So, what is the lowest I should go without worry?
     
  2. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: air pressure 16.5\"

    45 psi. /forums/images/graemlins/thumb.gif
     
  3. 4xcrazy

    4xcrazy 3/4 ton status

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    Re: air pressure 16.5\"

    I wouldn't go any lower than 25 psi, hell i set my 16's at 28 and it does real good. any lower and there would have been a few times where i would have been sittin on the rim.
     
  4. skelly1

    skelly1 1/2 ton status

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    Re: air pressure 16.5\"

    uggh, really, not even 25?
     
  5. bigyellowjimmy

    bigyellowjimmy 1/2 ton status

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    Re: air pressure 16.5\"

    I think 25 psi would be fine at very low speeds. Will you have a spare and/or on board air?
     
  6. skelly1

    skelly1 1/2 ton status

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    Re: air pressure 16.5\"

    I'll have a spare, but no air, yet. That's next.
     
  7. bigredblzr

    bigredblzr 1/2 ton status

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    Re: air pressure 16.5\"

    I think you'd be okay at 20 psi. I would carry around an air tank and some lighter fluid and matches just in case though... /forums/images/graemlins/weld.gif
     
  8. TruckNutzDude

    TruckNutzDude 1/2 ton status

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    Re: air pressure 16.5\"

    No less than 25 if you have to drive in any ruts. Here's why!
    [​IMG] /forums/images/graemlins/yikes.gif
     
  9. ugly_blazer

    ugly_blazer 1/2 ton status

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    Re: air pressure 16.5\"

    [ QUOTE ]
    45 psi. /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    My 36 x 12.5 - 16.5 Swamper TSL SX's have a Max. inflation of 30 psi (6 ply)... /forums/images/graemlins/dunno.gif

    Swamper Chart
     
  10. m j

    m j 1/2 ton status

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    Re: air pressure 16.5\"

    if you run really narrow rims you can have extremely low airpressure
    my 38.5/16/16.5 would run flat on the highway and not lose a bead on 9.75 rims
    rims 6.25" narrower then the advertised section width though, rare instance
    no one can say when you will lose a bead
    if you are going to run low pressure carry the tools to reseat the tire
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: air pressure 16.5\"

    [ QUOTE ]
    [ QUOTE ]
    45 psi. /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    My 36 x 12.5 - 16.5 Swamper TSL SX's have a Max. inflation of 30 psi (6 ply)... /forums/images/graemlins/dunno.gif

    Swamper Chart

    [/ QUOTE ]

    I was joking. My 38.5s are only rated for 30 psi as well I do believe.
     
  12. unclematty

    unclematty 1/2 ton status

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    Re: air pressure 16.5\"

    can i just say two words? bead locks! cybrfire makes some really cool designs /forums/images/graemlins/bow.gif /forums/images/graemlins/bow.gif /forums/images/graemlins/hack.gif /forums/images/graemlins/weld.gif /forums/images/graemlins/grind.gif
     
  13. ugly_blazer

    ugly_blazer 1/2 ton status

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    Re: air pressure 16.5\"

    [ QUOTE ]
    if you run really narrow rims you can have extremely low airpressure
    my 38.5/16/16.5 would run flat on the highway and not lose a bead on 9.75 rims
    rims 6.25" narrower then the advertised section width though, rare instance
    no one can say when you will lose a bead
    if you are going to run low pressure carry the tools to reseat the tire

    [/ QUOTE ]

    Tools? Starting Fluid and a BIC lighter?
     
  14. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    Re: air pressure 16.5\"

    I just want to add one thing to trail side tire dismount fixing. I know alot of guys that do the starting fluid and lighter routine and it works well. They have messed around with it enough to have a feel for it. It is an art. I rapidly removed the hair off my arms and all of my eyebrows and my ears rang for the rest of the day. On one day it was cold and I couldn't get it to "pop" to the rim. Tried again the next day and it was considerably warmer. Same amount of fluid and so on and BOOOM. Basically the evaporation rate of the starter fluid changed. Now I had a really nice fume that really had some power.

    So, be careful. Start with small amounts and be careful. That being said, Invest a little cash in a cheetah gun. One of those airtanks with the big ball valve. Much safer.

    I just wanted to say this for some of the guys that are new to offroading and trail fixes.

    Be safe.
     
  15. skelly1

    skelly1 1/2 ton status

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    Re: air pressure 16.5\"

    Thanks for all the tips gents.
     
  16. ugly_blazer

    ugly_blazer 1/2 ton status

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    Re: air pressure 16.5\"

    [ QUOTE ]
    I just want to add one thing to trail side tire dismount fixing. I know alot of guys that do the starting fluid and lighter routine and it works well. They have messed around with it enough to have a feel for it. It is an art. I rapidly removed the hair off my arms and all of my eyebrows and my ears rang for the rest of the day. On one day it was cold and I couldn't get it to "pop" to the rim. Tried again the next day and it was considerably warmer. Same amount of fluid and so on and BOOOM. Basically the evaporation rate of the starter fluid changed. Now I had a really nice fume that really had some power.

    So, be careful. Start with small amounts and be careful. That being said, Invest a little cash in a cheetah gun. One of those airtanks with the big ball valve. Much safer.

    I just wanted to say this for some of the guys that are new to offroading and trail fixes.

    Be safe.

    [/ QUOTE ]

    You are very right. I learned from guys at a tire shop that do this all of the time. They "blew" my 44 TSL's on to 14" wide wheels, when he lit it the tire jumped a couple feet off of the ground. I've also seen sidewalls explode on semi truck tires using this method. I wouldn't suggest doing it unless you've seen it done.
     

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