1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

what psi to air down?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TacoTuesday1, Jun 28, 2022.

  1. Jun 28, 2022 at 1:31 AM
    #1
    TacoTuesday1

    TacoTuesday1 [OP] Well-Known Member

    Joined:
    Jun 19, 2019
    Member:
    #296781
    Messages:
    6,955
    Gender:
    Male
    NC
    [​IMG]

    What PSI do you air down do?
    I've always heard 20 is good. Did that on rocky mountain trails with no issue. Plenty of traction on the abrasive rock.

    However, I recently did a sandy trail, and the tires kept slipping. I couldn't find a way to burnout/warn them up. I know these Method bead grips can air down lower.

    So I stopped, reduced PSI to 17-18, but unfortunately it made the ride height lower and more likely to scrape underneath
    I don't know if it actually made a difference, or if 20 would've been fine.
    I think at the end of the day, with A/T's and the fact it was sandy, simply meant I had to pick my line accordingly and that it'll slip no matter what.
    In other words, overshooting left to go straight, knowing when moving forward it will slide right.

    Curious to hear what everyone does re: best PSI to air down to
     
    ZColorado likes this.
  2. Jun 28, 2022 at 1:43 AM
    #2
    Sharpish

    Sharpish Well-Known Member

    Joined:
    Jan 4, 2016
    Member:
    #173981
    Messages:
    3,774
    Gender:
    Male
    First Name:
    Brian
    Victoria, British Columbia, Canada
    Vehicle:
    2012 Tacoma TRD OR 4x4
    Some guys go under 10, I stick to 18-20
     
  3. Jun 28, 2022 at 1:59 AM
    #3
    ColoradoTJ

    ColoradoTJ I drink, and I know things… Moderator

    Joined:
    Sep 3, 2018
    Member:
    #265097
    Messages:
    9,568
    Gender:
    Male
    Vehicle:
    3500 Duramax
    I have popped a tire bead a few times (even with beadlocks, inner bead), so have a way to air the tire back up. Starting fluid and ignition source works...FYI. I also bring a nice CO2 tank along if needed.

    To answer your question, 12 psi and you should be good unless you are taking hard turns in sand. Might roll a bead off the wheel. Depending on tire size, this can make your differential a boat anchor.

    For reference, I keep my front at 10 psi, rears at 9 psi. Jeep is a fatty at 5300 lbs.

    D18F1983-4A8F-4D99-8F45-4A72B0D04E6D.jpg
     
    Last edited: Jun 28, 2022
    6 gearT444E and MA_TACO like this.
  4. Jun 28, 2022 at 1:59 AM
    #4
    MA_TACO

    MA_TACO Well-Known Member

    Joined:
    Jan 28, 2018
    Member:
    #242689
    Messages:
    661
    Gender:
    Male
    Wesley Chapel, FL
    Depends on if you have bead locks and type of terrain. I've aired down my KMC's to 8psi on rocky terrain but on a non bead lock rim I wouldn't go under 15-20psi.
     
  5. Jun 28, 2022 at 4:22 AM
    #5
    dk_crew

    dk_crew Well-Known Member

    Joined:
    May 20, 2019
    Member:
    #293798
    Messages:
    734
    Gender:
    Male
    First Name:
    Dave
    Austin, TX
    Vehicle:
    2005 Tacoma 4x4
    I also have bead grips and 12-14 has worked great for me. Slow crawling in rocks. At the beach 12-15 but I'm mostly driving from A to B down the seashore - no high speed turns. When I'm wheeling one of my goals is to not slip. If I spin I try another line. I'll have the occasional bump but I usually target 13 and have been good.
     
  6. Jun 28, 2022 at 5:24 AM
    #6
    ZColorado

    ZColorado Well-Known Member

    Joined:
    Nov 6, 2020
    Member:
    #345998
    Messages:
    886
    Gender:
    Male
    Near Boulder Colorado
    Vehicle:
    13 DCSB OR 6MT
    35's,Kings, NWF, 488, Harrop, SPC, Archive, Method, RCI, C4
    I've always gone to 12psi. Did that for many many years on standard steel wheels and never had a problem. I have Method bead grips on my new tacoma.

     
  7. Jun 28, 2022 at 7:00 AM
    #7
    Bikinaz

    Bikinaz It wasn't me!

    Joined:
    Oct 13, 2018
    Member:
    #269257
    Messages:
    1,315
    Gender:
    Male
    First Name:
    Hey You!
    Phoenix, AZ
    Vehicle:
    2014 Regular Cab 4x4 5MT
    Pelfreybuilt Skids. ModCo wheels. Sliders. Cruise Control. Intermittent Wipers. Fog Lights.
    If it's not a paved road I'm at 17psi. It works for high speed and lower speed rocky runs for me.
    1222211157.jpg
     
  8. Jun 28, 2022 at 7:03 AM
    #8
    wi_taco

    wi_taco My skid plates give rocks taco flavored kisses

    Joined:
    Jul 20, 2020
    Member:
    #335129
    Messages:
    3,594
    First Name:
    Adam
    SE Wisconsin
    Vehicle:
    2015 Silver Minivan
    "Best" PSI will depend on many factors. Understanding how your truck and combination of equipment works is more important than knowning a magical one-size-fits-all set-and-forget PSI.

    If you haven't experimented in the field yet, the safe starting point according to most is 20 psi. As others have said going lower with non-beadlock wheels will be entering territory where you could start having issues de-beading more easily.

    Another factor not yet mentioned is your tire's load range. Something with a C load range will take less airing down compared to an E load range tire which has much stiffer side walls (disclaimer: this is a very broad generalization).

    Yet another factor is tire temperature. When you are slow speed wheeling this doesn't matter, but if you air down and then do high speed sections or lots of on-road driving you could be overheating the tires which could lead to failures, possibly catastrophic ones that you don't want. Understanding how your selected PSI affects this is good knowledge to have. Quick & dirty way is to carry one of those small infrafred thermometers.
     
    Island Cruiser, ZColorado and Bikinaz like this.
  9. Mar 27, 2024 at 12:53 AM
    #9
    TacoTuesday1

    TacoTuesday1 [OP] Well-Known Member

    Joined:
    Jun 19, 2019
    Member:
    #296781
    Messages:
    6,955
    Gender:
    Male
    NC
    aired down to 17psi which seemed good until I hit this surprise at the end of a trail

    steepness not shown in pic
    Wish I tried lower PSI to see if that helps be easier on the clutch getting up

    anyway, didn’t want to mess with million mile wiring of ViAir 88P taking forever in the dirt and worrying about it falling over after on the floor super hot

    instead drove like a mile to gas station air used that
    Is that bad? Kept it under 45 if not 35mph on the way there

    im hoping not
    4Runner behind me at Black Bear Pass driving said he didn’t even air back up to make the road drive to Imogene and was fine

    so far only noticed one tiny damage or two to a single tire but guessing that’s from a rock and not aired down enough, and/or steel bumper or something not trimmed enough. Still working it out trial and error

    was max 2nd gear 4HI on flat parts in hindsight maybe should’ve went slower there or ran higher pressure during that section

    IMG_3989.jpgIMG_4011.jpg
     
  10. Mar 27, 2024 at 2:58 AM
    #10
    AvalonTaco

    AvalonTaco Falken Sales Rep.

    Joined:
    Apr 4, 2016
    Member:
    #183286
    Messages:
    390
    Gender:
    Male
    First Name:
    Joe
    Cabin in the woods
    Vehicle:
    2019 Super White DCSB OR
    Working on a lien delete for my title…..
    My bottom is 14….whenever I dream that I’m wheelin….
     
  11. Mar 27, 2024 at 7:56 AM
    #11
    fatfurious2

    fatfurious2 IG: great_white_taco

    Joined:
    Jun 28, 2014
    Member:
    #132884
    Messages:
    48,795
    Gender:
    Male
    First Name:
    David
    Ashburn, VA
    Vehicle:
    2010 TRD OR Access Cab
    Sandy beaches, Id go as low as 15 on a non beadlock wheel.

    Rocks and offroad 17-20 depending on comfort

    IMG_1613.jpg
    IMG_4325.jpg
     
  12. Mar 27, 2024 at 8:26 AM
    #12
    dk_crew

    dk_crew Well-Known Member

    Joined:
    May 20, 2019
    Member:
    #293798
    Messages:
    734
    Gender:
    Male
    First Name:
    Dave
    Austin, TX
    Vehicle:
    2005 Tacoma 4x4
    I have the method bead grips and am now in the 9-13 range with Patagonia MTs. I've gone as low as 6 in the snow. All slow driving. I have one trail spot where the back tires would skip/hop when at 15. At 10 it crawls right up. Definitely worth experimenting and if you have a 5th tire on hand you're OK if you slip a bead.

    .. and to the question a few notes up about 1 mile at 17psi. not an issue.
     
    Last edited: Mar 27, 2024

Products Discussed in

To Top