1. Welcome to 4Runners.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 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

A-Trac & Auto LSD

Discussion in '5th Gen 4Runners (2010-2024)' started by Limited off-road, Dec 27, 2025.

  1. Dec 30, 2025 at 3:16 PM
    #31
    Captain Spalding

    Captain Spalding . . .

    Joined:
    Feb 4, 2022
    Member:
    #25492
    Messages:
    2,964
    I dunno Spaz. If you take away the 4WD I’d have a hard time justifying the poor fuel economy.
     
    Shredder likes this.
  2. Dec 30, 2025 at 3:31 PM
    #32
    whippersnapper02

    whippersnapper02 New Member

    Joined:
    Feb 27, 2019
    Member:
    #8982
    Messages:
    4,169
    Gender:
    Male
    First Name:
    Christian
    Vehicle:
    2019 TRDP w/Kangs brah!
    One guy on FB wants that extra .05 MPG back so he is willing to spend $3K on the free spin kit from a guy in Hawaii.
     
  3. Dec 30, 2025 at 4:16 PM
    #33
    3JOH22A

    3JOH22A トヨタ純正男娼

    Joined:
    Dec 31, 2022
    Member:
    #30349
    Messages:
    4,117
    Gender:
    Male
    District 6ix
    Vehicle:
    5G 4Runner, 3G Tacoma on 35"s
    Normally the car has traction control. When you get tire slippage off the line, the car will apply brakes to the spinning wheel and cut engine power. Difference with Auto LSD is it will apply brakes to the spinning wheel but not cut engine power. If you leave Auto LSD enabled full-time, you will get extra rear brake pad wear and increase the likelihood of overheating your brake fluid.

    Every Toyota sold in the US since 2009 has Auto LSD (with a package of features marketed as "Star Safety System"). Some luddites specifically looked for pre-'09 Toyotas because they didn't want "safety nannies".
    Free spin kit? Like a manual locking hub conversion so the CV axles don't spin?
     
    Shredder likes this.
  4. Dec 30, 2025 at 4:18 PM
    #34
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
    Hubs on my 3/4t diesel gave a 1mpg increase, drives like a 2wd and zero wear on the diff, bearings and axles (CVs in our case).
    Hubs on my old 4R gives me zero cv-axle/diff wear in 2hi and 2wd lo for great fun for tight fire roads.
    If you ever find the supplier of hubs for our 5G let me know.
     
    Last edited: Dec 30, 2025
  5. Dec 30, 2025 at 4:25 PM
    #35
    Schlappesepple

    Schlappesepple New Member

    Joined:
    May 1, 2021
    Member:
    #21226
    Messages:
    754
    Vehicle:
    2020 ORP
    Agreed, many better options for on road use.
     
    Shredder likes this.
  6. Dec 30, 2025 at 4:38 PM
    #36
    whippersnapper02

    whippersnapper02 New Member

    Joined:
    Feb 27, 2019
    Member:
    #8982
    Messages:
    4,169
    Gender:
    Male
    First Name:
    Christian
    Vehicle:
    2019 TRDP w/Kangs brah!
    Correct. The guy used all Toyota parts as well. I don’t think it sold very well.

    IMG_5048.jpg

    3/4 SFA derzul vs IFS with ADD already.
     
  7. Dec 30, 2025 at 4:47 PM
    #37
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
    Spider gears and CVs still spin with ADD which my 22re 4R doesn’t have.
    Edit:
    My 1986 XtraCab didn’t have ADD either.
     
    Last edited: Dec 30, 2025
  8. Dec 30, 2025 at 4:49 PM
    #38
    whippersnapper02

    whippersnapper02 New Member

    Joined:
    Feb 27, 2019
    Member:
    #8982
    Messages:
    4,169
    Gender:
    Male
    First Name:
    Christian
    Vehicle:
    2019 TRDP w/Kangs brah!
    If it was that big of an issue the there would be failed 4wd IFS Toyotas everywhere.
     
    icebear likes this.
  9. Dec 30, 2025 at 5:06 PM
    #39
    3JOH22A

    3JOH22A トヨタ純正男娼

    Joined:
    Dec 31, 2022
    Member:
    #30349
    Messages:
    4,117
    Gender:
    Male
    District 6ix
    Vehicle:
    5G 4Runner, 3G Tacoma on 35"s
    It's a matter of vanity. Logically a midsize crossover like a RAV4 or Highlander FWD does everything better than a 2WD 4Runner, but some folks pick the 4Runner because it looks less like a minivan.

    Further up the vanity chain is a 2WD Jeep Wrangler with solid front axle that's basically a straight tube with no differential:

    [​IMG]
     
    Shredder likes this.
  10. Dec 30, 2025 at 5:12 PM
    #40
    3JOH22A

    3JOH22A トヨタ純正男娼

    Joined:
    Dec 31, 2022
    Member:
    #30349
    Messages:
    4,117
    Gender:
    Male
    District 6ix
    Vehicle:
    5G 4Runner, 3G Tacoma on 35"s
    The motivation for ADD is fuel economy, not wear. The hypoid ring & pinion are responsible for most of the friction, so ADD achieves most of the fuel economy benefits without suffering poor reliability of auto-locking hubs.
     
  11. Dec 30, 2025 at 5:36 PM
    #41
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
    My 22re hubs are fine after 35-1/2 yrs and my 3/4t w/600ftlbs haven’t hurt the hubs since the 2010 installation even pulling friends out of thick muck. To each their own….I love them and I would have them on any 4wd if I could.
     
  12. Dec 30, 2025 at 5:37 PM
    #42
    3JOH22A

    3JOH22A トヨタ純正男娼

    Joined:
    Dec 31, 2022
    Member:
    #30349
    Messages:
    4,117
    Gender:
    Male
    District 6ix
    Vehicle:
    5G 4Runner, 3G Tacoma on 35"s
    You have auto locking hubs or manual locking hubs?
     
    icebear likes this.
  13. Dec 30, 2025 at 5:44 PM
    #43
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
  14. Dec 30, 2025 at 5:48 PM
    #44
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
    My 1990 4door 2nd Gen is essentially a 1st Gen with extra doors. Gear drive transfer case, not chain.
    Edit:
    DynaTrac hubs on the 3/4T.
     
  15. Dec 30, 2025 at 7:10 PM
    #45
    3JOH22A

    3JOH22A トヨタ純正男娼

    Joined:
    Dec 31, 2022
    Member:
    #30349
    Messages:
    4,117
    Gender:
    Male
    District 6ix
    Vehicle:
    5G 4Runner, 3G Tacoma on 35"s
    ^Yeah manual hubs are reliable but not marketable in a mainstream truck or SUV. 99.99% of 4Runner drivers wouldn't want (or even know) to get out of the vehicle to lock the hubs. Automakers therefore choose between ADD or auto locking hubs. The 70 series LC comes with unreliable auto locking hubs, usually the first parts to get junked in off-road builds in Australia.

    upload_2025-12-30_22-13-57.png

    [​IMG]
     
    icebear and whippersnapper02 like this.
  16. Dec 30, 2025 at 7:28 PM
    #46
    2ndGen22re

    2ndGen22re Goldie, my 1st love & my new kid…

    Joined:
    Mar 10, 2022
    Member:
    #26045
    Messages:
    1,187
    Gender:
    Male
    First Name:
    CR
    Carson Valley, NV
    Vehicle:
    1990 22RE & 22 AG ORP KDSS
    One-at-this-price stripper. Bought new 36 yrs ago, a $13K leftover. Added Detroit TruTrac, 1”rear spring spacer and “pinstripes”… Factory AC kit and roof rack bought at dealer cost at time of purchase, still blows ice cold 36yrs later. 2022 AG ORP all stock.
    They made the #7k diesel much better as Dodge spins the entire drive assembly back to the T-case. $1,400 in 2010…would do it again at double the price.
     
  17. Dec 31, 2025 at 9:55 AM
    #47
    McSpazatron

    McSpazatron New Member

    Joined:
    Feb 16, 2021
    Member:
    #19810
    Messages:
    6,665
    Gender:
    Male
    Vehicle:
    2021 4runner OR
    Dobinson IMS Warn Bumper CaliRaised Sliders 285/70 K02s
    They would just need to change the name to something more fitting… let’s say….the Toyota Town and Garden. That helps with making sure buyers are under no false illusions that they need to start an instagram for overlanding. Hmmm, what else…I think the 2wd version is an inch lower than the 4wd versions, so it’s pretty close to the right height. Maybe they could try to bring back vinyl wood paneling? A rear facing rumble seat in the back for the kids? I like my mini-van, don’t get me wrong…but who want’s a “mini”van when nowadays they’re all bigger than the full-size vans they used to be compared to. And all those fussy sliding track doors. Nope! Bring back the station wagon! See, It’s all about marketing :D

    Seriously though, I think I’ve gotten to the point that I just plain dislike how modern unibody vehicles ride. At least the ones a normal person could afford. The last decent riding (and handling) unibody I’ve owned was a 99 Accord. Ever since I bought this 4runner, I’ve come to realize that maybe I actually did want my father’s Oldsmobile.

    For sure there has to be some personal sensory differences between people, because you often hear folks say that 4runners ride like “trucks”…but that’s never been the feeling I’ve gotten riding in mine. Even with my lifted Dobinson suspension, heavy armor, and all my extra instagram overlanding accessories. ;)
     
    Last edited: Dec 31, 2025
  18. Dec 31, 2025 at 11:16 AM
    #48
    Captain Spalding

    Captain Spalding . . .

    Joined:
    Feb 4, 2022
    Member:
    #25492
    Messages:
    2,964
    Aah! Gather round kids. Time for another old-timey anecdote.

    I went to middle school in the 1970’s and there was a neighborhood carpool in which all the moms would take turns driving. The weapon of choice was the Ford Country Squire station wagon, with slightly metallic paint, and vinyl wood paneling as McSpazatron describes. There was no third row seat in that particular model but it wasn’t an issue. Two of us sat cross legged in the back. One of the moms had an Oldsmobile Safari wagon, with the eyebrow windows in the roof over the second row seats, the “disappearing” tailgate, and the coveted rear-facing third row seats. By tenth grade one of the guys had gotten his license and inherited that Safari wagon. He drove carpool every day and we all chipped in for his gas money. And with no adult supervision there were shenanigans. For example, in the day or two after Halloween on the way to school we would steal a few used up jack-o-lanterns off of front porches and fill up the rear seat footwell with them. Then while traveling on the freeway the disappearing tailgate would be lowered and the pumpkins ejected one at a time with dramatic results. The pumpkins would hit the ground and tumble rapidly for a few seconds until they succumbed to centrifugal force and exploded spectacularly. Sometimes the car behind us would be showered with pumpkin parts, in which case we would howl with laughter. If the driver of that car made any objection, we would pantomime launching another pumpkin. If the pantomiming didn’t drive him away, we would launch the pumpkin. Ah. The warm fuzzies I have when thinking about those days and the remarkable utility of the station wagon.
     
    Last edited: Dec 31, 2025
    Shredder and McSpazatron[QUOTED] like this.
  19. Dec 31, 2025 at 11:37 AM
    #49
    whippersnapper02

    whippersnapper02 New Member

    Joined:
    Feb 27, 2019
    Member:
    #8982
    Messages:
    4,169
    Gender:
    Male
    First Name:
    Christian
    Vehicle:
    2019 TRDP w/Kangs brah!
    Toyota, let's go idk where.

     
  20. Jan 3, 2026 at 8:36 PM
    #50
    McSpazatron

    McSpazatron New Member

    Joined:
    Feb 16, 2021
    Member:
    #19810
    Messages:
    6,665
    Gender:
    Male
    Vehicle:
    2021 4runner OR
    Dobinson IMS Warn Bumper CaliRaised Sliders 285/70 K02s
    I love old timey anectdotes!!!
    This did not disappoint. To get the pumpkin to no not splat, so that it could spin itself to disintegration instead…that is a skill in my book. One I would have never thought needed learning. Duly noted.


    Looks like a front row seat to the freeway punkin chunkin event! Might be better than that disappearing tailgate!!!
     
  21. Jan 10, 2026 at 12:45 AM
    #51
    Greg D

    Greg D TJ312

    Joined:
    Aug 6, 2019
    Member:
    #10809
    Messages:
    1,189
    Gender:
    Male
    First Name:
    TJ312
    Vehicle:
    2013 4runner
    I'm continually amazed how well my Limiteds AWD works, especially if skid and traction control kick in. It can feel and react to what I know is about to happen before I can feel it is happening. I was thinking of a regear and couldn't find any LSD carrier listed. That's when I realized the ABS/Trac/Skid is so advanced, it operates the front and rear LSD and Atrac systems. It explained the rear pad wear on driver's rear inside pad.
     

Products Discussed in

To Top