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Bed Bounce Fix?

Discussion in 'General Tundra Discussion' started by Rica25, Feb 24, 2018.

  1. Jun 21, 2021 at 12:51 AM
    #121
    Lvtrd4x4

    Lvtrd4x4 New Member

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    Ive lurked high and low for an answer to the bed bounce phenomenon and honestly the best i seem to have found is to put a bed cage in or box the frame. I tried a make shift bed cage and that didnt work but i just finished boxing the back half of my frame. It still is not completely gone in my head but man is it much more tame.

    20210620_182348.jpg
    20210620_214937.jpg
     
  2. Jun 21, 2021 at 7:36 AM
    #122
    W3agle

    W3agle New Member

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    “Box the frame” - take the open channel steel frame members and weld a cover plate on? I’ve never heard this term before.

    I am hoping that some added weight on the bed helps my bed bounce. 250lb camper shell + some weight inside eventually for my camping buildout.
     
  3. Jun 21, 2021 at 10:01 AM
    #123
    Lvtrd4x4

    Lvtrd4x4 New Member

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    For me it was weird. Weight got rid of one of 2 vibrations for me. It fixed the vibrating/rough feeling from the suspension itself, but the bed still bounced with 500 lbs of concrete and lighter duty springs. The shell itself should act like a stiffer structure for the bed which should help the bounce as well.
     
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  4. Dec 21, 2021 at 6:47 AM
    #124
    romad86

    romad86 New Member

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    I just tried 250lb of sandbags in various configurations in the bed, no difference. I’ll take them back to Lowes and try something else. Was really hoping the $20 I spent on sandbags would help. Oh well.
     
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  5. Dec 21, 2021 at 12:23 PM
    #125
    Hbjeff

    Hbjeff New Member

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    the 99-04 taco had very weak frame rails as well. Fab places used to sell plates to weld to the sides to stiffen them up. I would bet that would help us as well. Easier than boxing the frame from a labor perspective
     
  6. Dec 21, 2021 at 5:33 PM
    #126
    romad86

    romad86 New Member

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    Yea boxing the frame looks extremely labor intensive. It's just weird that there nothing consistent across the board that's worked. Some people get shackles and it solves the problem. Some used weight in the bed and were good. Maybe the roads here in CO are extra worse, I don't know. There are some that are almost nauseating to drive on.
     
  7. Dec 21, 2021 at 5:44 PM
    #127
    DeesCrewMax

    DeesCrewMax New Member

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    I did not enjoy reading that new 22 owners have found the ride “bouncy” at times. I really hope what they are referring to is NOT what we have experienced. Some stretches of roads are perfectly fine, but then I encounter 80 miles of the perfect harmonic storm and I become reluctant to road trip the Tundra as its a uncomfortable for everyone . If a $65k coil sprung rear tundra still does this that would be disappointing to say the least.
     
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  8. Dec 21, 2021 at 5:57 PM
    #128
    alb1k

    alb1k Always Coming From Take Me Down

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    This looks like and old thread and maybe I didn't read enough. But is anyone actually modifying their truck to deal with highway construction?
     
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  9. Dec 21, 2021 at 8:14 PM
    #129
    Hbjeff

    Hbjeff New Member

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    my guess is that the shocks are too soft and the bouncing is likely just actual suspension travel.

    the bed bounce of the gen 2 is not suspension travel. It is the frame flexing as you drive.

    Shackles do help a lot, but its not perfect. A stiffer frame, better shocks, and shackles would all work together
     
  10. Dec 22, 2021 at 5:35 AM
    #130
    romad86

    romad86 New Member

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    I guess shackles and shocks are in my future.
     
  11. Dec 22, 2021 at 5:41 AM
    #131
    Sirfive

    Sirfive Master Procrastinator

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    My bed frame is cast iron from the late 1800’s, and i had to weld some steel bracing to protect the corners from vigorous bouncing. Electrical tape helped with the squeaking.
     
    Last edited: Dec 22, 2021
    B.Ross, Sumo91 and Darkness like this.
  12. Dec 22, 2021 at 5:44 AM
    #132
    DeesCrewMax

    DeesCrewMax New Member

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    5160 shocks, topper, 240lb of sand, shackles with poly bushings and it still is awful in mine (on certain road types) if my tire pressure is at 40psi. At 34 psi it’s better, but still terrible.
    For those thinking this is in our heads or is just the bed moving, if you whistle on one of these stretches of hwy and just hold a solid note you sound like someone is smacking you on the back every 1.5 seconds.

    I’ve considered pro suspension or AccuTune’s adventure tune in some fox 2.5 with DSC, but I’m not convinced the design flaw can be fixed so easily.
     
    Skew12 likes this.
  13. Dec 22, 2021 at 6:28 AM
    #133
    Hbjeff

    Hbjeff New Member

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    True Bypass shocks would probably cure 99% of it but now you’re spending a shitload of money. If i ever can stop working so much OT at work im gonna have a fab shop make some frame stiffeners
     
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  14. Dec 22, 2021 at 7:52 AM
    #134
    Darkness

    Darkness Allergic to white

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    I just avoid the highway.
     
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  15. Dec 22, 2021 at 7:58 AM
    #135
    Darkness

    Darkness Allergic to white

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    Anybody try the willy bar? This video is suspect because he installed it in a Dodge and made his wife pretend to be two different models, but maybe it worked?

     
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  16. Dec 22, 2021 at 8:49 AM
    #136
    snivilous

    snivilous snivspeedshop.com

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    I don't think so. I think it's a combination of the stiffness of the frame (natural frequency) and wheelbase and spacing of the concrete on the road. Everything is perfect to hit the resonance of the chassis. Tweaking the shocks might help but any energy imparted into the chassis (ie suspension motion) would still cause it to resonate. This explains why there's no real cure, and that stiffening the frame has had (some) success since it changes the frequency enough to move it out of the range that the concrete blocks are spaced.
     
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  17. Dec 22, 2021 at 5:22 PM
    #137
    romad86

    romad86 New Member

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    I realize I likely won't get rid of the bounce completely. I'd just be happy to find a way to mitigate it some.
     
  18. Jan 3, 2022 at 7:49 AM
    #138
    mustangr2

    mustangr2 New Member

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    I have experienced this. I understand it will never go away but it shouldn't be this bad. I am guessing this is primarily due to the winter hitting but it’s lately it’s pretty awful. I can watch the bed bounce horribly in the side mirror. I dropped the pressure in the tires because I usually run a little extra pressure. That helped slightly. I am going to throw a little weight it and see what happens. I might take it in and see what Toyota says. I don’t recall it being that bad when I was testing driving trucks. Now granted the Utah highways are not the greatest but still it shouldn’t be that bad. I love the truck and but the ride is pretty terrible so far. My only major other dislike with the truck is the stupid Toyota remote start.
     
  19. Jan 27, 2022 at 6:04 PM
    #139
    romad86

    romad86 New Member

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    Has anyone tried lowering the tire pressure, to a reasonable level, and had luck mitigating the bounce?
     
  20. Jan 28, 2022 at 6:21 AM
    #140
    Hbjeff

    Hbjeff New Member

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    Toyota already calls for a really low tire pressure at 33lbs. I would definitely not go lower than that.
     
  21. Jan 28, 2022 at 9:17 AM
    #141
    romad86

    romad86 New Member

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    Noted, thanks. I think mine are at 35 right now, I’ll have to look. No point in going to 33, won’t make any difference.
     
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  22. Jan 28, 2022 at 1:21 PM
    #142
    mustangr2

    mustangr2 New Member

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    I lowered my to low 30s and it helped. Also it’s seems to help slightly is the my tonneau cover is covering the bed instead of leaving the bed open.
     
  23. Feb 2, 2022 at 2:57 PM
    #143
    batman900

    batman900 Yep

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    Glad I found this. This crap has started to drive me crazy since the weather got colder and today was almost the last straw for my patience.

    I can visibly see my bed bouncing in the mirrors and I can only imagen how stupid that looks to other people on the highway..... It's not a vibration, it's a full freaking bounce. Didn't have this issue when new during winter last year nor was it an issue all summer with my new Bilstein shocks, rear sway bar and front level. But with the temps dropping and the wind maybe? Seems worse with a head wind... Not sure but it almost makes me sick on my 15 minute highway commute to and from work. Sigh

    Think I may try the coachbuilder shackles. If I could at least reduce the bounce by half I'd be happy.
     
    Last edited: Feb 2, 2022
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  24. Feb 2, 2022 at 5:49 PM
    #144
    UTAHRTK

    UTAHRTK New Member

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    Ive heard the poly bushings with the shackles help. I do not have them installed but when I road trip with weight in the bed the bounce is minimal. Its funny to watch my G baby in her car seat when I roll on concrete portions of highways locally. The bounce sucks, but its a truck...embrace the suck.
     
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  25. Feb 2, 2022 at 6:16 PM
    #145
    batman900

    batman900 Yep

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    I'd give it up to just being a truck if this wasn't the only truck I've ever driven out of a dozen on the same roads to bounce lol. I'd also forgive it if it was just the feeling in the cab and not literally seeing the ass ended twerking in the mirror.
     
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  26. Feb 2, 2022 at 6:19 PM
    #146
    UTAHRTK

    UTAHRTK New Member

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    Hahaha. I hear ya man. This is the first one that has bounced for me as well- I have crewmax. fuck it.
     
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  27. Feb 2, 2022 at 6:24 PM
    #147
    Hbjeff

    Hbjeff New Member

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    Coachbuiler shackle helps a ton. E rated tires might make it worse as well, I haven’t noticed it as much going back to p rated.
     
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  28. Feb 2, 2022 at 6:27 PM
    #148
    batman900

    batman900 Yep

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    Good to hear, I ordered the shackles an hour ago and told myself to make sure I don't buy E rated tires this time lol.
     
  29. Feb 2, 2022 at 7:34 PM
    #149
    Hbjeff

    Hbjeff New Member

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    i go back and forth. P rated tires handle my trailer just fine, however it was nicer to not need to air the e rated to the max every trip. (Trailer isnt crazy heavy)
     
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  30. Feb 7, 2022 at 7:27 AM
    #150
    Legbuh

    Legbuh New Member

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    Ya, I experienced this last night on the highway for the first time. Then my flashbacks to my 08 tundra came rushing back. I can't believe the 2019 CM still does it. Cmon, Toyota... And mine even came with TRD pro front suspension and upgraded Fox BDS in the rear.
     

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