1. Welcome to Tundras.com!

    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 Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

BFG AT T/A KO2: What pressure do you guys recommend?

Discussion in 'Wheels & Tires' started by Maddog94, Jul 25, 2016.

  1. Jul 25, 2016 at 2:01 PM
    #1
    Maddog94

    Maddog94 [OP] New Member

    Joined:
    Jul 25, 2016
    Member:
    #3987
    Messages:
    172
    Gender:
    Male
    The tires are stock size (LT265/75/18) in load range "E".

    I am running 40 psi front and rear right now, and it feels and handles great, gas mileage is same as stock, (pretty much). But the bottoms look a little flat. What would you run? 45? 50psi?
     
  2. Jul 25, 2016 at 2:52 PM
    #2
    Maddog94

    Maddog94 [OP] New Member

    Joined:
    Jul 25, 2016
    Member:
    #3987
    Messages:
    172
    Gender:
    Male
    Ok, I'm gonna chalk them tomorrow and see. It's raining here today.
     
  3. Jul 25, 2016 at 6:20 PM
    #3
    bobeast

    bobeast really old member

    Joined:
    Feb 11, 2015
    Member:
    #960
    Messages:
    1,525
    Gender:
    Male
    First Name:
    Bob
    Hollister, CA
    Vehicle:
    2008 DC
    - Bull Bar - LED Bunny Burners - AMP retractable running boards - Headlight leveling retrofit - P3 Brake Controller - 60% rear seat delete - relocation of Sub to rear wall - Bilstein 5100 x4, top setting with 2 shims per side - Coach builder +2 rear shackles w/carrier bearing drop - Firestone Air bags - on-board compressor with auto-leveling - Dual Undercover Swing Boxes. - P285/65/R20 (34.6") BFG TA KO2's - TRD Front skid plate - Pop & Lock Tailgate lock - Remote Tailgate mod - LED Headlights - Nav Bypass - iPhone integration - Serius/XM retrofit - 25% front tint - Bizon electric tonneau cover - Power folding tow mirror upgrade - 2010+ leveling Headlight mod - Auto-fold mirror mod. - one-touch lane changer mod - Flash to open garage opener mod - Rigid H/L fog light upgrade - Pushbutton / Remote start mod.
    40 all the way around for the street. 35 if I'm in the dirt a lot.
     
  4. Jul 25, 2016 at 6:36 PM
    #4
    Law323

    Law323 it’s only weird if you make it weird

    Joined:
    Apr 7, 2016
    Member:
    #3081
    Messages:
    9,842
    Gender:
    Male
    First Name:
    Law
    Baton Rouge, La
    Vehicle:
    2012 4.6 L MGM DC
    Toytec BOSS suspension lift @ 3" (front) Toytec BOSS remote resi's (back) 1" Toytec block (rear) 275/70r18 Toyo AT2 Info system mod 3D MAXpider Kagu floor mats LED interior lights 50% ceramic tint front windows 35% ceramic tint windshield brow Bed mounted YETI bottle opener Paracord wrapped oh Sh!t bars 3" stubby antennae TRD sway bar Upcoming: LED backup lights OEM Backup camera Iron Cross Patriot step bars Trifold or roll up tonneau cover
    I'm running toyo AT's I had them on 39. Ride felt a little spongy, bumped them up to 46-47. Much better ride for me. Probably hit 50 on the back when I tow.
     
  5. Jul 25, 2016 at 6:44 PM
    #5
    Virgils12

    Virgils12 New Member

    Joined:
    Dec 21, 2014
    Member:
    #816
    Messages:
    971
    Gender:
    Male
    Vehicle:
    2012
    Camburg Fox factory 2.5" lift Xd monsters with 295/70/18 nitto terra graplerrs Corsa cat back Weather tech liners Wet okole covers
    Mine are 35x12.50 but I run them at 40 psi and wear looks spot on and I'm right around 5k on them.
     
  6. Jul 29, 2016 at 11:22 AM
    #6
    RussellVaughan

    RussellVaughan New Member

    Joined:
    Jul 27, 2016
    Member:
    #4010
    Messages:
    269
    Gender:
    Male
    Houston
    Vehicle:
    2015 Gray TSS 5.7 CM SR5 4x4
    AMP Research PowerSteps; Katzkin leather seats (Nightrunner, all black, no perf/logo); TRD 18" BBS Forged rims; Nitto Terra Grappler G2 LT295/70R18) tires; LT295/70R18 spare tire; Rough Country speedo calibrator; Fox 2.0 IFP front & rear w/1" leaf blocks; TRD PRO black headlamps w/Headlight Revolution harness; TRD PRO grill w/color match hood bulge; RCI engine skid plate; BakFlip MX4 tonneau; Baja Design Squadron Sport fog lights w/clear wide lens; front/rear color match bumper covers; K&N CAI; Pedal Commander throttle controller w-trailer brake bezel; SE Toyota wireless charger tray; VLEDS interior and exterior LED lights; AJT Designs interior chrome delete; Sparks Parts driver side grab handle kit; Pop&Lock tailgate lock; ICS Fab dash mount w/support plate; ICS Fab center console mount; SNS Custom Design ABS sensor guards; TRD PRO shift knob; Undercover Swingcase bed storage; Rad Rubber Design engine splash guards; Bull Ring bed rail tie-downs; exterior debadge w/black & engine badge and black 4x4 badge; Charvonia Design billet bed tie-down anchors; rear console USB port; TRD rear sway bar; Fumoto Oil Pan Valve; Toyota metal oil filter assembly; Vexing R1 dash cam; X2Power 24F Battery.
    I would go with what the door jam says. Mine is 49 psi, but I have the LT275/55R20 BFGs that came stock.
     
    MookTastic likes this.
  7. Jul 29, 2016 at 11:25 AM
    #7
    csuviper

    csuviper Moderator Staff Member

    Joined:
    Jan 6, 2014
    Member:
    #38
    Messages:
    17,283
    Gender:
    Male
    First Name:
    Brian
    Broomfield, CO
    Vehicle:
    2019 TRD Sport CM 5.7L 4X4
    Some Mods :) See build thread for details
  8. Jul 30, 2016 at 7:10 AM
    #8
    MookTastic

    MookTastic Because I was inverted!

    Joined:
    Jul 16, 2016
    Member:
    #3895
    Messages:
    164
    Gender:
    Male
    First Name:
    Trice
    Rapid City, SD
    Vehicle:
    2013 5.7L White D/C TSS Offroad Icon Stage 8
    Icon Stage 8 AlphaRex Headlights
    Same here pretty much. Running 285/55/20. Door jam says 49. It's been a while since I drove a full size truck and I was surprised to see a door jam recommend such a high pressure. But I like I said. Just couldn't remember standard range for large vehicle.
     
  9. Sep 2, 2019 at 3:44 AM
    #9
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    I just picked up some ko2 for my tundra and I noticed while letting the wife drive that her side has a bounce at low speeds. I checked this morning and I have 35 on left front and the rest are 33 once warmed up .What is the best pressure for a daily driver?
     
  10. Sep 2, 2019 at 6:32 AM
    #10
    cmiller219

    cmiller219 New Member

    Joined:
    Feb 9, 2019
    Member:
    #25873
    Messages:
    785
    Gender:
    Male
    First Name:
    Chris
    Nashville, TN
    Vehicle:
    2018 Cement CM Tundra
    This will depend on where you live and how hot or cold it is honestly.
     
  11. Sep 2, 2019 at 6:34 AM
    #11
    Grumpy Uncle

    Grumpy Uncle Pushing string down the hall SSEM #10

    Joined:
    Jul 29, 2017
    Member:
    #8801
    Messages:
    12,888
    Gender:
    Male
    First Name:
    Pat
    CO
    Vehicle:
    2016 Black CM Tundra TRD Off Road
    4:88s and Auburn LSD, dealership faux Pro, 35" BFGs on XD wheels, OME Lift with Dakars
    44 psi front
    42 psi rear
     
  12. Sep 2, 2019 at 6:57 AM
    #12
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    I will try 38 all around and see how that feels. I have to admit tho these tires ride a lot better than the bridgestone dueler I had. They felt too squishy I guess you could say.
     
  13. Sep 2, 2019 at 7:00 AM
    #13
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    At least now my truck looks like a truck.

    IMG_4131.jpg
     
    10TundraSR5 and NewImprovedRon like this.
  14. Sep 2, 2019 at 7:04 AM
    #14
    Cox3497

    Cox3497 New Member

    Joined:
    Jul 9, 2016
    Member:
    #3812
    Messages:
    63
    Gender:
    Male
    Vehicle:
    Toyota Tundra Crewmax
  15. Sep 3, 2019 at 11:09 AM
    #15
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    Its weird that door plate says 30 front and 33 in back. that doesn't match up with what other people are saying here. But I had bridgestone duelers stock.
    Now I have to find a station that has a real pump that can pump up that high. The local gas station didn't cut it. I would have been there all day.
     
  16. Sep 3, 2019 at 11:31 AM
    #16
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    The door sticker that says 30/33 is for P rated tires (mine says that too once I pulled the TSS door sticker off that was pasted over the factory one). When you install a more heavy duty tire, like E rated tires, those factory door numbers are no longer applicable. Toyo tires has some tables and an explanation of how you convert that 30/33 door sticker to E rated tires. I did that and the number I came up with is 50 pounds, if I remember correctly. But my tires are 18". Be careful running too low of pressure. The tire will heat up and come apart, especially on the highway. The numbers are "minimum" numbers by the way, so in my case 50 pounds is the minimum number for the street. If you go off road you can air down while off road and if you haul heavy weight you can and should go up from there per the tire tables and the rating of the tire.

    To answer the OP question, I recommend 50 pounds all the way around, but you can also use the tables and check for yourself.
     
  17. Sep 3, 2019 at 11:57 AM
    #17
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    Oh, didn't know that. My k02's are d rated I think. I will have to research their pressure.
     
  18. Sep 3, 2019 at 12:05 PM
    #18
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    The BFG A/T tires that came on my TSS were D rated as well. I cannot remember what the pressure was on them. I pulled that door sticker off when I was running P rated tires because the dealer put too much pressure in the P rated tires based off that door sticker. I think it was around 46-49 pounds going off vague memory.
     
  19. Sep 3, 2019 at 12:15 PM
    #19
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    thanks for all the info. You just saved my tires.
     
  20. Sep 3, 2019 at 12:26 PM
    #20
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    Are you sure you have the size of your tire correct? The stock size for mine is 275/65R18. It looks like you got some numbers transposed. I don't even see where BFG has a tire that size.

    Assuming that you have 275/65R 18 tires, the Toyo tire charts show 50 pounds minimum air pressure. I have 275/65R18 in E rated. Same numbers
     
  21. Sep 3, 2019 at 1:14 PM
    #21
    scharring100

    scharring100 New Member

    Joined:
    Mar 6, 2018
    Member:
    #13359
    Messages:
    126
    Gender:
    Male
    First Name:
    Mike
    Houston, Texas
    Vehicle:
    2016 Tundra Limited 4X4 Crewmax
    2016 Crewmax, Bronze 4X4
    I had 275/60/r20 on a jeep and they were so rough riding, i almost went back to street tires. not sure what tire pressure was but I hated them. wondering about my 2016 CM 4X4 would be aly difference because of the weight. I think the KO2' are E rated 10Ply
     
  22. Sep 3, 2019 at 2:29 PM
    #22
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    The stock 20" BFG A/T K01 tires that came on my 2016 CM 4x4 TSS were D rated and they rode very firm. I was shocked at how much nicer my truck rode with the 20" P rated tires that I replaced them with. BFG tires ride rougher than some tires because they have very thick and tough sidewalls. I have Goodyear Durtrac E Rated tires and they ride much softer than the D rated BFG A/T IMO. A lot of folks go with BFG A/T because of the robust sidewall but you may pay for it in ride quality.
     
    Last edited: Sep 3, 2019
  23. Sep 4, 2019 at 3:17 AM
    #23
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    Here is a pic of numbers on my k02. I just put in 41 psi all around and see how that goes until I can do a chalk test.

    IMG_4166.jpg
     
  24. Sep 4, 2019 at 3:22 AM
    #24
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    My trucks ride is nice with these tires on. The duelers I had before this were too soft. Bumps are a little more pronounced but not too much.
     
  25. Sep 4, 2019 at 4:31 AM
    #25
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
  26. Sep 4, 2019 at 5:18 AM
    #26
    myt1

    myt1 New Member

    Joined:
    Mar 25, 2018
    Member:
    #13873
    Messages:
    366
    Gender:
    Male
    First Name:
    Richard
    Scottsdale, AZ
    Vehicle:
    2010 Tundra DC TRD SR5 Desert Sand Mica
    OME Lift, 275/70R 18
    I had KO2's in 75/70R/18's.

    I got 62K miles out of them.

    I rotated them religiously every 5k miles and ran 40 PSI.
     
    15whtrd likes this.
  27. Sep 4, 2019 at 5:29 AM
    #27
    trainracer

    trainracer New Member

    Joined:
    Mar 28, 2015
    Member:
    #1127
    Messages:
    167
    I emailed bfg I have the lt275/55r20 they suggested running 50 psi
     
    RDRunner likes this.
  28. Sep 4, 2019 at 5:38 AM
    #28
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    Ha Ha. That is the number I came up with using the tire tables and conversion method from a P rated tire to an E rated tire. Glad to know I was correct. I had my LT275/65R18 E Rated tires installed by Discount Tire a few days ago and they put 35 pounds pressure in them. That concerned me, so I did some research and used those tire tables to come up with the best answer. Of course, there may be some tweaking on that number later as I see how they are wearing, etc., but as a beginning point for minimum tire pressure I think that is the best place to start. YMMV
     
    Last edited: Sep 4, 2019
  29. Sep 4, 2019 at 5:43 AM
    #29
    RDRunner

    RDRunner New Member

    Joined:
    Jul 11, 2019
    Member:
    #33091
    Messages:
    241
    Gender:
    Male
    Vehicle:
    2016 SR5 Crewmax 4x4 TSS Edition
    I don't think those tables are helpful because they only list maximum pressure--not minimum pressure. Here are the tables you want and they explain how to convert your factory door sticker air pressure numbers from P rated tires to E rated tires (or C or D rated): https://www.toyotires.com/media/2125/application_of_load_inflation_tables_20170203.pdf See page 11.
     
  30. Sep 4, 2019 at 5:55 AM
    #30
    GreggyCl

    GreggyCl New Member

    Joined:
    Aug 1, 2019
    Member:
    #33989
    Messages:
    40
    Gender:
    Male
    Yes toyo tires does have a more detailed description. I wonder why other tire manufacturers don't do the same.
     

Products Discussed in

To Top