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Bouncy at 75-80mph

Discussion in '3rd Gen Tundras (2014+)' started by matambo, Oct 11, 2017.

  1. Oct 11, 2017 at 9:08 PM
    #1
    matambo

    matambo [OP] New Member

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    so i got my first truck - a 2017 Tundra Crewmax 4x4 with the TRD package. stock 18" wheel with 275/65/18.
    took the truck for a cruise at i25 here in denver and i notice that the car bounces when reaching 75-80 and after 80 its smooth sailing again and vice versa when slowing down. are my tires over inflated or is that normal for trucks to do.

    any suggestions? would installing a rear sway bar fix this? i also have ordered 285/55/20 nit tires with 20 x 9 rims. would the bigger wheel and tires solve this? need advise....
     
  2. Oct 11, 2017 at 9:32 PM
    #2
    joonbug

    joonbug I love peanut butter

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    Was it a concrete highway? Sounds like bed bounce. Bigger wheels won’t help, might actually make it feel rougher.
     
  3. Oct 11, 2017 at 9:38 PM
    #3
    BayRunner

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    How much air do you have in the tires? Low psi on a P rated tire can feel like a sponge in the right conditions.
     
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  4. Oct 11, 2017 at 9:55 PM
    #4
    easleycrawler

    easleycrawler TOYOTA ADDICT

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    Tires may need speed balancing. That's what it sounds like to me.
     
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  5. Oct 11, 2017 at 11:13 PM
    #5
    GNTundra

    GNTundra Troll Sniper

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    Denver area?? Its the roads, trucks fine! :D
     
  6. Oct 12, 2017 at 3:01 AM
    #6
    matambo

    matambo [OP] New Member

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    yup concrete highway. bed bounce?
     
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  7. Oct 12, 2017 at 3:02 AM
    #7
    matambo

    matambo [OP] New Member

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    would have to check on that too. thanks
     
  8. Oct 12, 2017 at 4:29 AM
    #8
    borntostun

    borntostun New Member

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  9. Oct 12, 2017 at 4:47 AM
    #9
    1UPPER

    1UPPER The mods list keeps growing.

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    TEXAS
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    2017 Tundra CM MBM Platinum 4x4
    7" Lift Fox 2.5 series Front Coilovers Fox 2.0 Rear reservoir shocks Icon Upper Control Arms Aluminum Front powder coated sway bar Rear powder coated sway bar Coachbuilder Aluminum shackles Coachbuilder steering kit Fuel Forged FF19 22"x12" rims Toyo Open Country M/T 37/22/13.5 Viper Alarm with pager and iphone app for remote start Amp Research Power Steps Full Tint on front and rear windows Center console organizer TRD shifter LED headlights and fog lights Weather TechFloor Mats TRD PRO Grille 40" NSV Auto LED in Hood Bulge 30" Rigid Radiance Blue in Bumper 2x10" Rigid Radiance White in Grille 50" Rigid Radiance Red for brake lighting and off-road lighting Dually LED Floods lights in rear bumper for reverse lights OPT7 LED under tailgate lighting OTRATTW custom switches
    Maybe it just the adrenaline pushing your lead foot. Lol
     
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  10. Oct 12, 2017 at 5:26 AM
    #10
    ColoradoTJ

    ColoradoTJ I Stand for the Red, White, and Blue

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    Yep, it is the roads. Only thing you can do is suspension tuning. Have you tried that speed on other roads?

    Where are you going 75-80 mph on I25 in Denver? It is usually stop and go.
     
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  11. Oct 12, 2017 at 5:30 AM
    #11
    matambo

    matambo [OP] New Member

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    to castle rock. suspension tuning? like sway bar?
     
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  12. Oct 12, 2017 at 5:30 AM
    #12
    smslavin

    smslavin On a plane...

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    this was my first thought as well.
     
  13. Oct 12, 2017 at 5:32 AM
    #13
    smslavin

    smslavin On a plane...

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    some weight in the back might help as well. once i put the topper on mine, it started to settle. then really settled with the drawers, kings and new leaf packs...
     
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  14. Oct 12, 2017 at 5:46 AM
    #14
    ColoradoTJ

    ColoradoTJ I Stand for the Red, White, and Blue

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    A sway bar will make it worse.

    You will need to upgrade to a shock that is tunable, and the rebound will have to be adjusted. Call the guys at Filthy Motorsports in Denver.

    You have a two fold problem.

    1) rear part of the frame is flexy.
    2) factory shock on vehicles suck.

    The expansion joints on the freeway are almost the wheelbase of a truck. Colorado should not have concrete highways.
     
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  15. Oct 12, 2017 at 6:31 AM
    #15
    TruckinIt

    TruckinIt I STAND FOR OUR FLAG!!

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    I had the same problem until I changed the rear shocks and the bed bounce went away by half, at least. I need to do what @smslavin did to his ride!! Then I’ll have no bed bounce. Good thing our freeways aren’t that bad. Only one section of one of the freeways that I travel on actually.
     
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  16. Oct 12, 2017 at 7:06 AM
    #16
    scotch

    scotch New Member

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    2010 Tundra Method 20x9 Fat Fives 18offset, 305/55/20 Duratracs, Bilstein 6112/5160, SPC/LR Upper Control Arms, TRD Rear Swaybar, OME/Dakar leafs with CB +1 Shackles, Husky Weatherbeaters, Du-Ha, Extang Solid Fold, Line-X, Toyota Bed Mat, Stoptech Cryo Rotors and pads, Goodridge brake lines, Stoptech STR-660, Rigid Fog Lights, Odyssey Battery, Firestone Airbags with CB spacer, etc, etc... Previous Toyota's: 97 4runner, 02 tacoma, 09 tacoma
    That particular stretch, 25 from Lincoln to castle rock, is real bad for the bounce....
     
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  17. Oct 12, 2017 at 7:08 AM
    #17
    ColoradoTJ

    ColoradoTJ I Stand for the Red, White, and Blue

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    That is because Nevada knows how to build concrete highways.
     
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  18. Oct 12, 2017 at 7:13 AM
    #18
    matambo

    matambo [OP] New Member

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    so mine is not an isolated case with tundra trucks.
     
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  19. Oct 12, 2017 at 7:13 AM
    #19
    matambo

    matambo [OP] New Member

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    cool. what rear shocks did you use?
     
  20. Oct 12, 2017 at 7:15 AM
    #20
    monaco730

    monaco730 New Member

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    My 2016 does the same in Denver. Especially on 285 going up to the mountains. 7500 miles on mine. Stock TRD off road suspension.
     
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  21. Oct 12, 2017 at 7:16 AM
    #21
    scotch

    scotch New Member

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    You're not the only one. Its also bad on the 225 northbound, from Mississippi to the 70...
     
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  22. Oct 12, 2017 at 7:23 AM
    #22
    ColoradoTJ

    ColoradoTJ I Stand for the Red, White, and Blue

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    Or some trucks with close to your wheelbase.

    Our 4Runner, Tacoma, GMC is smooth through that section. I still get it a little in the GMC. I'm putting some King 2.5's on the rear for sure.
     
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  23. Oct 12, 2017 at 8:00 AM
    #23
    matambo

    matambo [OP] New Member

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    thanks for all the inputs. so how do we remove this? coilovers?
     
  24. Oct 12, 2017 at 8:32 AM
    #24
    TruckinIt

    TruckinIt I STAND FOR OUR FLAG!!

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    We do have pretty good roads for the most part. They just take forever to build them. Half the time the reduced speed limits are in effect, no one is even working on the stupid road.
     
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  25. Oct 12, 2017 at 8:34 AM
    #25
    TruckinIt

    TruckinIt I STAND FOR OUR FLAG!!

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    They came with my lift kit. They’re the Zone nitrogen shocks. Not really good but better than stock TRD OR. Just until I can put my icons on her.
     
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  26. Oct 12, 2017 at 9:26 AM
    #26
    ColoradoTJ

    ColoradoTJ I Stand for the Red, White, and Blue

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    Be glad they take the time and do it right. I would like to blame our roads on the weather changes, but I have had some of the hottest and coldest days in my life training in northern Nevada.
     
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