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What PSI ?

Discussion in 'Wheels & Tires' started by geno0506, May 11, 2017.

  1. May 11, 2017 at 2:32 PM
    #1
    geno0506

    geno0506 [OP] New Member

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    Hello all,

    trying to determine best PSI for my new 295/70/18 Nitto Ridge Grapplers while mainly riding on pavement highway and city!

    So far I went from 14.3 to 14.1 mpg

    What are you running in a similar set up

    2017 Tundra CrewMax 4x4
    5.7
    295/70/18
     
  2. May 11, 2017 at 2:38 PM
    #2
    Bprose

    Bprose Old member

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    Go with the pressures on the label on the drivers door pillar.
    Or, 32 psi is good as s general rule.
     
    Sunnier and geno0506[OP] like this.
  3. May 11, 2017 at 3:01 PM
    #3
    Snoozer

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  4. May 11, 2017 at 3:35 PM
    #4
    joonbug

    joonbug °°°°°°°°°°

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    39 on STTs
     
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  5. May 11, 2017 at 3:38 PM
    #5
    geno0506

    geno0506 [OP] New Member

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    Yeah, I was thinking 39-40!
     
  6. May 11, 2017 at 3:41 PM
    #6
    joonbug

    joonbug °°°°°°°°°°

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  7. May 11, 2017 at 4:11 PM
    #7
    AKJ78

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    Running 40 PSI in my KO2s. Played with 35-45 until I found best hwy ride quality and doesn't "look" overinflated.
     
  8. May 11, 2017 at 4:16 PM
    #8
    Spvrtan

    Spvrtan Amateur fabricator

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    I usually just run the max cold PSI allowed on the tires themselves.
     
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  9. May 11, 2017 at 4:17 PM
    #9
    Bprose

    Bprose Old member

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    Huh, never heard of that "chalk test". Makes sense.
    Kids all grown up, no more sidewalk chalk laying around. Damn.
     
  10. May 11, 2017 at 4:24 PM
    #10
    Bprose

    Bprose Old member

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    That's kind of funny. We get all kinds of guys out in the glamis area with huge F-350's, 40" tires etc... they get stuck all the time and can't figure it out. I kick the tires and they're rocks. They have the pressures at 70-80. When I air em down to 15-20 they drive right out of the hole, w the trailer.
    I've known guys to make $2k over a big weekend pulling people out w a little Toyota or 1/2 ton and an air compressor.
     
  11. May 11, 2017 at 4:56 PM
    #11
    Law323

    Law323 it’s only weird if you make it weird

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    I go 42-45 on my toyo AT's.
     
  12. May 11, 2017 at 6:42 PM
    #12
    MakMurph

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    Window tint,RB20 running boards,Falken wildpeaks 295/70/18, CB +2 shackles, CB bumper shim kit, TRD rear sway bar, spidertraxx 1.25” wheel spacers,
    I emailed BFG when I bought my ko2's they suggested 50 psi I'm at 45-46 50 about rattled my teeth outta my head felt every seam and pebble on the road lol
     
  13. May 12, 2017 at 7:00 AM
    #13
    chphilo

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    I am assuming that you are asking for only those tires with 80 max psi.

    I run 45 psi on my Trail Grappler.
     
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  14. Feb 6, 2018 at 12:45 PM
    #14
    BlueBottle

    BlueBottle not a PRO

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    are you guys using these numbers as cold or warm pressure? Im at 38 on my 295/70 Toyo ATII's and they are a bit rough still
     
  15. Feb 6, 2018 at 1:02 PM
    #15
    cu52

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    Call Nitto and ask them! I called Nitto on the larger size I had on my Sequoia and I just called Toyo an hour ago to get PSI recommendation for my LT285/60R20 Open County AT II Xtreme installed yesterday
    41F cold
    44R cold

    Will do a chalk test to adjust from that starting point. Nitto/Toyo are pretty good about recommendations. They were dead on with the Sequoia!

    Not sure what you previously had, but likely stock to Ridge Grapplers, there will be a decrease in MPG due to increased rolling resistance.
     
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  16. Feb 6, 2018 at 1:07 PM
    #16
    831Tun

    831Tun heartless Bastrd

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    I run 40 psi in cooper stt pros on the road. Off road 25-28.
     
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  17. Feb 6, 2018 at 1:15 PM
    #17
    rons23

    rons23 Get The Led Out!!!

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    45 on my Ridge Grapplers. Subject to change.o_O
     
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  18. Feb 6, 2018 at 1:21 PM
    #18
    TheBeast

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    40 psi Toyo R/T
     
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  19. Feb 6, 2018 at 1:59 PM
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    14tundra

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    40 psi on 275/60/20 Hankook Dynapro ATM
     
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  20. Feb 8, 2018 at 6:01 AM
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    Big J

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    This is what I do except I go 4-6lbs less than the max. Never had an issue.
     
  21. Feb 8, 2018 at 6:04 AM
    #21
    14burrito

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    30-35psi on road LR E tire

    Roughly 10-20 off-road depending on terrain
     
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  22. Feb 8, 2018 at 8:32 AM
    #22
    zcarpenter92

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    I run 35 psi cold on my RG’s, same size as yours. I wore down the middle tread my stock tires pretty quickly running 40-44 psi in them. Still got 44k out of em though.
     
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  23. Mar 1, 2018 at 3:40 PM
    #23
    pschiller86

    pschiller86 2017 SR5 CrewMax

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    Will running a higher than "recommended" psi set off the Tire Pressure Warning Light?
     
  24. Mar 1, 2018 at 4:07 PM
    #24
    Big J

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    Since I run higher than what is posted on the door stamp (like 40-46psi). I haven’t had any TPMS issues.

    I’d be curious if anyone tried it with like 75psi on some heavier rated tires. Like is there a threshold you can’t go over?
     
  25. Mar 1, 2018 at 4:34 PM
    #25
    pschiller86

    pschiller86 2017 SR5 CrewMax

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    I'm curious about this as well.
     
  26. Mar 1, 2018 at 5:44 PM
    #26
    mudslinger79

    mudslinger79 New Member

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    Email Nitto. One of their engineers can give you what psi you should run. Thats what i did a few days ago when my Generals showed up. They were friendly and more than helpful.
     
  27. Mar 1, 2018 at 5:44 PM
    #27
    mudslinger79

    mudslinger79 New Member

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    No. It won't.
     
  28. Mar 1, 2018 at 5:57 PM
    #28
    pschiller86

    pschiller86 2017 SR5 CrewMax

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    So I just got my trd pro wheels and new tires installed. Tpms sensor is on. Installer said because the air pressure is higher than the oem recommendation.
     
  29. Mar 1, 2018 at 7:02 PM
    #29
    Big J

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    I think some of us was wondering how high of psi can you go without getting a tpms light? Or is there no limit aka no light at any psi above the minimum amount of psi?

    For what you should run that comes down to the tire, load index, hauling/towing/payload, etc. I’d say just make sure you all get the same load index or higher. And don’t go over the max psi rated for that tire. Keep the minimum psi what’s on the door. 1/2 tons usually around 35-40 +/- (typically)
     
  30. Mar 1, 2018 at 7:05 PM
    #30
    pschiller86

    pschiller86 2017 SR5 CrewMax

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    My psi light is on after new tires. I think it’s directly related to the tire shop OVER airing my tires. Is that a thing?
     

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