Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

1Ton folks with 38" or bigger tires

Discussion in 'The Garage' started by Depdog, Jan 10, 2003.

  1. Depdog

    Depdog 1/2 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    1,657
    Likes Received:
    0
    Location:
    Georgia
    1Ton folks with 38\" or bigger tires

    What pressure are you running yours at. Especially if you have the Bias TSL's I have 39.5's and run them at 26 psi, seems too stiff.

    Depdog
     
  2. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

    Joined:
    May 19, 1999
    Posts:
    21,623
    Likes Received:
    701
    Location:
    CO
    Re: 1Ton folks with 38\" or bigger tires

    Usally at around 24 PSI on the street.
     
  3. yellowK20

    yellowK20 Well Lubricated Premium Member GMOTM Winner

    Joined:
    Dec 26, 2002
    Posts:
    7,602
    Likes Received:
    551
    Location:
    Wasilla AK,
    Re: 1Ton folks with 38\" or bigger tires

    I have the same tires on my k20 (bald) I run 19-psi cold in mine with my 12 inch lift with my 6 inch superride I ran 26-psi cold I also have 15 inch rims /forums/images/graemlins/truck.gif
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    Re: 1Ton folks with 38\" or bigger tires

    i run 38x13x16in bias tsl swamper's and run 22-24psi on the street and 10psi on the trail and 8-10psi on the sand hope this helps /forums/images/graemlins/smile.gif oh and i have a very even tire wear pattern /forums/images/graemlins/smile.gif
     
  5. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    Re: 1Ton folks with 38\" or bigger tires

    39.5x15x16.5 TSL's and they are run on the street at 17 psi
     
  6. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

    Joined:
    Mar 5, 2001
    Posts:
    15,681
    Likes Received:
    1,392
    Location:
    642 Days to BB2018
    Re: 1Ton folks with 38\" or bigger tires

    Depdog,

    If you check the sidewall of the tires, you will see a MAX PRESSURE and a MAX LOAD.... Those are the keys to setting the pressure.

    As an example: My truck rides on 38.5 TSLs (Bias Ply) which are rated at 30 psi at 2400 Lbs. I know that my truck weighs just under 5000 lbs with almost perfect 50/50 weight distribution, so each tire is actually "seeing" approximately 1250 Lbs of weight. Theoretically, that means I should be able to run around 15 psi on the street without overloading the tire.

    This seems to be valid, as I run the tires around 17 psi and notice that the outer 1/2" of tread on both sides of the tire is not being "scuffed" on the pavement when I drive....letting the air down to 15 psi would ensure full tire contact, at the expense of even WORSE fuel mileage.

    You might have missed an article in one of the recent mags about this subject, but it did a pretty good job of covering how to calculate a "valid" tire pressure based on load, etc.

    One other thing, I have a suspicion that MOST people running big tires like TSLs, tend to overinflate them (like a radial)....since most of the ones I've seen that are "bald" are only bald in about the middle 4 inches!!!! Kind of a give-away if you ask me!!! /forums/images/graemlins/smile.gif
     
  7. desertrat67

    desertrat67 Hawk Driver

    Joined:
    Jul 5, 2001
    Posts:
    3,982
    Likes Received:
    74
    Location:
    Dumfries, VA
    Re: 1Ton folks with 38\" or bigger tires

    38's on a crewcab wiht 20-25 depending on if i want a firmer right or not.
     
  8. willyswanter

    willyswanter 1/2 ton status GMOTM Winner

    Joined:
    Dec 24, 2000
    Posts:
    2,690
    Likes Received:
    0
    Location:
    Bakersfield, CA
    Re: 1Ton folks with 38\" or bigger tires

    I have 39.50 TSL's, but the special E load rated version and I run 50 PSI /forums/images/graemlins/shocked.gif
     
  9. SAVAGE1

    SAVAGE1 1/2 ton status

    Joined:
    May 22, 2000
    Posts:
    1,104
    Likes Received:
    0
    Location:
    BAY AREA, CA
    Re: 1Ton folks with 38\" or bigger tires

    42's on 20psi /forums/images/graemlins/thumb.gif
     
  10. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    Re: 1Ton folks with 38\" or bigger tires

    Depends on the temperature. If its real cold, I find that the tire will ride better at a higher pressure. Normally I run about 22 to 24 pounds on the street and about 10 for the trail. I have gone down to 4 before for deep snow but the tires like to burp.
     
  11. 72THING

    72THING 1/2 ton status

    Joined:
    Nov 26, 2001
    Posts:
    501
    Likes Received:
    0
    Location:
    Ranburne, AL
    Re: 1Ton folks with 38\" or bigger tires

    Glenn, I have the same tires and I'm running 18 psi front and 16 psi rear cold. Seems to work pretty good. Anything higher makes the tire look too bulged out in the middle,

    Will
     
  12. BOWTIE

    BOWTIE 1/2 ton status

    Joined:
    Dec 28, 2000
    Posts:
    2,018
    Likes Received:
    0
    Location:
    Outside with the sawzall.
    Re: 1Ton folks with 38\" or bigger tires

    39.5 boggers. 20 psi on the street. 5 psi wheeling.
     
  13. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    Re: 1Ton folks with 38\" or bigger tires

    How does the 5 psi work on the boggers? I've got a set now of 39.5"'s on a 10" wide rim and on the tsl's I ran before, below 8 pounds it got iffy. Do the boggers hold the bead better? I've got a deep snow run at the end of the month and would like to run as low as I can.
     
  14. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

    Joined:
    Nov 24, 2000
    Posts:
    4,640
    Likes Received:
    1
    Location:
    Dillon Colorado, Hang'in in the mountains. Renting
    Re: 1Ton folks with 38\" or bigger tires

    38.5x15.5x16.5 TSL's
    18-20 on the street
    8-10 on the trail.
    I tried about 4-5 but I pulled the inside bead off of my beadlocks. /forums/images/graemlins/frown.gif
     
  15. BOWTIE

    BOWTIE 1/2 ton status

    Joined:
    Dec 28, 2000
    Posts:
    2,018
    Likes Received:
    0
    Location:
    Outside with the sawzall.
    Re: 1Ton folks with 38\" or bigger tires

    i must be lucky. with my beadlocks i haven't had any problems with the inside bead popping off. or at least not yet. /forums/images/graemlins/crazy.gif

    steering just gets a little slopy.


    ric
     
  16. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    Re: 1Ton folks with 38\" or bigger tires

    Ahhh. You have beadlocks. Someday. /forums/images/graemlins/grin.gif
     
  17. UNCLE CRACKER

    UNCLE CRACKER 1/2 ton status

    Joined:
    Dec 29, 2001
    Posts:
    937
    Likes Received:
    0
    Location:
    PORTLAND OR
    Re: 1Ton folks with 38\" or bigger tires

    39.5 swampers front , boggers rear. I run 18-20 psi on the street. on the trail 5-7 psi. in the sand 1-5 psi. I havent had a problem with blowing the inner bead either. I run the Allied 32 bolt beadlocks.
     
  18. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    Re: 1Ton folks with 38\" or bigger tires

    I had one bogger down to 3 pounds by accident once and it stayed on! I might try 6-7 pounds this next week in the snow and see what happens.
     
  19. Storm Trooper

    Storm Trooper 1/2 ton status GMOTM Winner

    Joined:
    Nov 24, 2000
    Posts:
    4,640
    Likes Received:
    1
    Location:
    Dillon Colorado, Hang'in in the mountains. Renting
    Re: 1Ton folks with 38\" or bigger tires

    The real trick to pulling the inside bead off is to have your pressure down, then back up a 45-50 deg. hill to let other wheelers by, then pull back on the trail while trying to turn. Oh, and don't forget to be at 10,000+ ft. elev. on a cold day. That might help /forums/images/graemlins/grin.gif
     
  20. Sandman

    Sandman 3/4 ton status Author

    Joined:
    Apr 15, 2002
    Posts:
    5,653
    Likes Received:
    0
    Location:
    Pocatello, ID
    Re: 1Ton folks with 38\" or bigger tires

    I personally like flying around a snowy corner with the gas floored. that ripped off all four tires once. /forums/images/graemlins/grin.gif
     

Share This Page