__________________ 07 DC SR5 TRD 4x4 5.7 TRD exhaust, 46K miles, 17 mpg city after battery disconnect reset. Truxedo Lo-Pro with deck rails. Front Susp: Stock coilovers, 4" lift (http://www.tundrasolutions.com/forum...6-4-inch-lift/), swapped extra spacers for Bilstein 5100s on lowest setting, wheel well height still 41.5." Rear Susp: ProComp ES3000 #326510 (2.25" taller than stock), 1.25" blocks plus PRG mini-pack (http://www.tundrasolutions.com/forum...and-new-truck/) gives 2.25" total lift, parking brake cable bracket spacers, wheel well height 43." Front diff and rear ds drop; trailer hitch electrical harness tucked up above bumper. After 20K miles swapped 305/65/18 BFG AT for 285/75/18 Toyo AT, still on stock 18x8x60 offset TRD wheels, about 1/8" clearance to sway bar. Like the extra height but miss the width. Next time either 305/70/, 295/70, or 35x12.50/18. Added 5th 285/75/18 Toyo AT as spare. Bed Bounce: Stiffer E-tires are worse than stock P-metric; biggest improvement from PRG mini-pack, slight improvement from shocks. Still a stiff ride but tolerable now. Best things about this truck: 5.7 and transmission, interior size and comfort, very quiet at high speed. Worst things about this truck: bed bounce, no VSC in 4wd, mileage sucks above 70.
That video is BS and I am tiered of hearing folks talk about it, it is total BS, I can make any ( and I mean any) PU do that given the situation, just because Ford staged this you believe it?.
Come on we are not that stupid.
No, I own one. The Ford video does show that the bumper flexes along with the bed, indicating that it is the frame flexing since the bumper mount is securely bolted to the frame rails. Please describe in detail how it is BS if you have some inside information. Based on my experience with my Tundra and what I have read about others, I think Ford found and is expoilting a design/engineering defect in the Tundra.
I notice another odd thing when I was checking the bolts on my trailer hitch. I put my fingers on the back of the rear spring near the shackle, I hit upward on the rear bumper with my fist. I could feel the movement in the spring, it would stop and then reverberate back again. Like a shock wave going through the truck and coming back. Now that was only with my hand, so imagine what the force of the truck going over a bump does.
You need to chill out. Even if the problem is not a "problem" but flaw in all trucks (which there is doubt, but even if true) this thread is for owners looking to fix it. Which means those of you who accept it, ignore it, don't think its a problem or just don't care should NOT post. This isn't a discussion for you. Go away. Let us discuss this for our needs. Why does it bother you so much?
I'm not going to get into a bickering war with you, so this will be my final word on the subject, but it is people LIKE YOU that I was directly referring to.
In your apparent rush to rag on me you make it obvious that you didn't read/understand my post. The fact is that I have no problem with, and in fact look forward to posts that have constructive advice regarding a solution to the problem being discussed.
My request was simply asking that people NOT post simply to criticize or insult others LIKE YOU DID! Your post had nothing to do with the 'bed bounce' problem. You posted simply to criticize me. Poor form, old man.
I too read this thread in hopes that someone will one day find a way to truely cure this problem, but in the meantime I wish that others that seemingly post just to 'hear' themselves talk would grow up and shut up. So if you have something to say regarding the bed bounce issue, I welcome your comments, and if not..well I guess I've already said enough about that.
My apologies to all others having to endure this conversation and thank you for your understanding.
__________________ 2007 Tundra 4X4 SR5 TRD Double Cab
Short Bed, Auto, Volant CAI, TRD Cat Back Exhaust, 20" Moto Metal wheels, Tow Package, Back-up camera, Sill Protectors, AVS In-channel Window Vent Visors, Sirius Satellite, All-Weather Floor Mats, Blue Streak Metallic
LOL... timelessimages, I interpreted your post above the same way Cruiser13 did. Sorry, but that's just how it came off sounding to me. I'm driving a rental FJ Cruiser right now, and I'm glad because my back has been killing me lately. I believe the culprit may be the bed bounce. I am now thinking I really need to find a solution for it, because I don't think my back will hold up. So while my baby is in the shop, I'm gonna see if my back feels better by the time she comes home. If so... I think I'll even try that mini pack that these guys are sayin has helped a ton. I'll try anything if it'll make the bed bounce go away.
Here is a test:
Most of you probably have a hitch on your truck.Give it a good downward kick on the top of the ball and post here what happens to your box.Now go do it to a few other brands when you get a chance.
I am not complaining about the initial harshness of ride I can live with that and appreciate being able to tow any trailer I will ever use without it squatting like my 04 did.But If I look in my mirror on potholed roads or if I am just towing my small two place sled trailer the shaking that box does looks like it is going to fall off.Only way to stop it with sled trailer hooked up is to move the sleds so far forward that the tongue wieght is heavy enough I cant lift it.Had to move the holddown bars threaded holes forward to do this.Now if I dont look in the mirrors at the shaking the ride is good enough its not a concern.What I am concerned about is how long sheetmetal can survive with a shake like that?Toyota missed this issue.
Its not a design flaw either. Its normal behavior for any truck with that type of frame, including 1/2 tons, 3/4 tons, and larger.
Correct - in fact, it's actually a design element.
The back ends of our trucks are light, and if everything was one solid piece of steel, any jarring in the back end would transfer directly to the cab and occupants.
The frames and the bed are designed with a certain amount of give.
When you look back and see your bed moving around, just be glad your CAB is not doing the same thing.
Correct - in fact, it's actually a design element.
The back ends of our trucks are light, and if everything was one solid piece of steel, any jarring in the back end would transfer directly to the cab and occupants.
The frames and the bed are designed with a certain amount of give.
When you look back and see your bed moving around, just be glad your CAB is not doing the same thing.
I disagree. When you look back and see your bed moving and your teeth are shaking, thats not normal. I have test drove other pickups over the same condiitions. The ride is rough, but teeth stay in place. It's a design flaw. Hopefully Toyota will correct this problem soon. I still love this Tundra. But there is a problem that Toyota needs to fix.
I didn't say the entire truck shaking or bouncing is normal. Re-read what I posted; I'm only pointing out that a certain amount of give between the bed and cab is normal (addressing the posts where people are concerned that their bed seems to move independantly of their cab)
Not to beat a dead horse here but Matt is exactly right. I fly H-60 helicopters for the Navy and we spend a great deal of time tuning vibration absorbers on them. Each H-60 has 3 vibration absorbers that are hinged weights that vibrate in tune with the harmonic frequency of the helo vibrations. They are tuned by adding weights to the absorber until it comes in synch with the vibrations. You can really tell it when they get out of synch. For this bed shake problem, the spare tire essentially acts like a vibration absorber. If you can get it in tune with the vibrations, it will smooth things out. I don’t think anything is wrong with the truck, Toyota just needs to figure out how to absorb the harmonics. Wish I had a suggestion for a fix. Any of the things listed above could work though if you get it in synch. Just my two cents.
Not sure if I missed it reading through all the posts but someone was going to try removing the spare tire.That would do something if it is a harmonic balance issue either make it worse or better.So has anyone removed the spare?Do all our Tundras come with the same spare?If not maybe thats the difference why some have it bad or some not at all?
How about rubber pads under the box where it contacts frame?I didnt see any under ours at the very back mount.That doesnt make sense to have them under all the box/frame contacts except the back one where frame would be moving the most.Take a look.Maybe add slightly thicker ones where thin ones are and a thin one at back.
Another thing to try would be taking some of that GreatStuff expanding foam and fill the rails with it?
I definitly agree this is a Harmonic issue.We have a giant tuning fork mounted under our box.Toyota can solve this.I expect they will.
Last edited by cannondale27; 04-06-2008 at 05:13 PM.
C chanel frame will flex/move/shake/vibrate or whatever you would like to call it. The cure, if you it bothers you, is to box it. Toyota did this on the Sequoia because no one would put up with it on a vehicle of that type. I might get around to boxing the frame on mine... I've never been one to leave well enough alone.
Guess I'm having a problem with this bed bounce thing. My 08 DC doesn't do it unless I'm travelling badly corrugated dirt roads and then I expect that there would be significant bed vibration. I assume it is a real problem for some, but if it is a "harmonics" problem then why do we not all have it? Same with the Tail Gate issue. No doubt some of us have had this problem also but many have not. Guess I'm just old and confused. I think this truck is the best truck I have ever had and love driving it, it's a blast! but it's a P/U Truck not a Lexus and given its design purpose it's the best out there.
Guess I'm having a problem with this bed bounce thing. My 08 DC doesn't do it unless I'm travelling badly corrugated dirt roads and then I expect that there would be significant bed vibration. I assume it is a real problem for some, but if it is a "harmonics" problem then why do we not all have it? Same with the Tail Gate issue. No doubt some of us have had this problem also but many have not. Guess I'm just old and confused. I think this truck is the best truck I have ever had and love driving it, it's a blast! but it's a P/U Truck not a Lexus and given its design purpose it's the best out there.
The beds on these trucks "float " more than others and some have a resonation that is quite jarring. Similar to a paint can shaker at home cheapo. There is a harmonics issue at play here which causes the whole cab to vibrate at the same rate of the bed vibration. Thats what a lot of people are experiencing. Mostly caused by the concrete expansion joints but greatly amplified by the frame. I love my truck as long as I avoid the concrete sections of freeway or drive over 85 mph over those sections. Hopefully the mini pack I ordered will reduce the condition to where it is more tolerable.
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'07 SR5 DC 5.7 silver sky metalic
5% tint rear windows, 2 Flowmaster 40 series w/ dual tips out the back, Carriage Works polished grill overlay w/emblem, 3-piece bumper inserts (not CW), Airaid, Ground Force rear shocks, DJM 3" arms, belltech flip kit, 22" BOSS 329 w/ 305/45/22 General grabber UHP, G2 bakflip.
Here is a test:
Most of you probably have a hitch on your truck.Give it a good downward kick on the top of the ball and post here what happens to your box.Now go do it to a few other brands when you get a chance.
I am not complaining about the initial harshness of ride I can live with that and appreciate being able to tow any trailer I will ever use without it squatting like my 04 did.But If I look in my mirror on potholed roads or if I am just towing my small two place sled trailer the shaking that box does looks like it is going to fall off.Only way to stop it with sled trailer hooked up is to move the sleds so far forward that the tongue wieght is heavy enough I cant lift it.Had to move the holddown bars threaded holes forward to do this.Now if I dont look in the mirrors at the shaking the ride is good enough its not a conc dont ern.What I am concerned about is how long sheetmetal can survive with a shake like that?Toyota missed this issue.
Tried your test and found nothing unusual from what i can see. This is my test that I did. I have extang solid fold on mine and when I see something in the side mirrors and look at the rear view mirror I dont see the same thing.
I will say once you put about 200 lbs on the hitch it is smoothest ride going. But I can honestly say I have never seen this bed shaking and I have asked other guys with trucks to follow me to see it they can see, nada.
I am telling you I watched a new chevy bouncing two days ago and it was directly in front of me.
And to be honest I dont really care, I towed a 14' trailer today with Six full Size dirt bikes and all our gear and it absolutely rocked, this is what I bought it for, it did a great job. If I really want a smooth ride I pull out the Lexus.
As an FYI, one of the guys with us today has a brand new Dodge 3500 Mega Cab, he was blown away by my Tundra, the towing and power, the fit and finish, the ride etc. he could not stop talking about the interior.
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08 Tundra DC LTD Silver, 07 ES 350, 07 TC, 07 Fusion, 73 240Z
Re: Possible Tundra Bed Bounce CURE FOUND
Poor form, old man.
2007 Tundra 4X4 SR5 TRD Double Cab
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