I don't really understand. I have not noticed bed bounce on mine at all. Are you guys watching the bed as you go down the raod to notice it bouncing? I don't watch mine, but here in FL we have some bad roads.
It isn't bad roads that causes the problem. It's concrete roads that have preriodic cross cuts in the road to serve as expansion joints. At about 65 mph through about 80mph a harmonic frequency is created that greatly amplifies the response of the truck to the slight changes in the road. The effect is really bad. When driving on this type of freeway, you just either go fast of slow. You can't stand to stay with the traffic. It'll bounce your guts out after awhile.
One has to understand that the whole reason the bed bounce is happening is due to the undampened resonance the bed itself creates on the frame. Adding weight is only going to lower the resonant frequency of the vibration. I'm surprised that the tundra is the first vehicle that suffers from this problem - I was followed a late 90s tacoma one day and couldn't miss observing the bed wiggle like crazy as it was driving over a railroad crossing. This tells me that toyota has a very flimzy bed structure design in all of their trucks. In my opinion the only fix for this problem is to stiffen the bed structurally so it doesn't wiggle so much. A spare tire torqued up against the frame is a bandaid approach, but what the heck - if it works then go with it! My tundra doesn't have the problem likely because it's a short bed, but I could imagine that the long beds all would tend to have it depending on the roads in your area.
Apparently we're talking to diffenent problems under the heading of "bed bounce". One is the harmonic amplication of dicontinuities in concrete roads which cause the whole truck to bounce very badly at certain speeds; unfortuantly these speeds are the speed limits in Calif. The second seems to the effect of rough or washboard roads on the bed of the truck, causing the bed to vibrate badly, even causing damage to the cab if bad enough.
Apparently we're talking to diffenent problems under the heading of "bed bounce". One is the harmonic amplication of dicontinuities in concrete roads which cause the whole truck to bounce very badly at certain speeds; unfortuantly these speeds are the speed limits in Calif. The second seems to the effect of rough or washboard roads on the bed of the truck, causing the bed to vibrate badly, even causing damage to the cab if bad enough.
Has anybody actually documented damage on their truck's cab from this? The only thing I've heard about this is from the Ford "please buy our trucks" video...
It would take alot of flex to do damage.Its funny Ford has that video.Maybe their new trucks dont flex much but thier older ones when 4x4ing I have seen so much flex the top of bed was partially covering rear window.
Like some are saying here flex isnt the issue.Its a Harmonic thing.One small bump or bang causes many very fast gyrations in the box.Not sure why it did nothing for Obgod3 but when I give the trailer ball on mine a downward kick the box/frame goes up and down a inch or so very rapidly about 6 times.
Has anybody tried the Firestone Ride Rite air spings and what effect they have on curing the highway bed bounce problem? I have read at least one glowing report on the use of Super Springs that completely eliminates the problem. Wondered about air bags.
I coupled this "fix" with a set of Deaver mini spring packs. First I put on PRG's spring set. It took the "jolt" out of pot holes, frost heaves, road seams etc.. and gave me a MUCH nicer ride. I was still seeing my bed bounce up and down some though. It was no where near as bad though.
Next I installed the foam pads. Now there is almost no movement at all. I have a much more comfortable ride with almost no "aftershock".
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07 Tundra DCSB, 5.7, Blue Streak Metallic, 4X4, SR5, TRD, BU, CK, DZ, FE, HM, MG, OF, Brushed Stainless steps, sill protectors, USMC lighted hitch plug and assorted stickers and license plate brackets, rollup bed cover, Rhino Liner, Mesh Grill backing, Black Wheelskin steering wheel cover, Wade in channel vent visors, under rear seat storage, PRG mini spring pack, Proforce rear exit cat-back exhaust, aFe CAI, TRD rear sway bar, A.R.E. MX series Cap.
Speaking of spare tire... has anybody tried removing the spare tire to see if that helps?
My going theory was that the Toyota test mules weren't equipped with spares...
Was hoping it might help you guys out... if it works
Yes!. I actually removed mine completely and it actually made the feeling WORSE!. I put it back in and played around with how tight to have it up against the frame.. Getting some wobble from it vs No Wobble at all.. The best for me was to have it as tight against the frame as possible.
Yes!. I actually removed mine completely and it actually made the feeling WORSE!. I put it back in and played around with how tight to have it up against the frame.. Getting some wobble from it vs No Wobble at all.. The best for me was to have it as tight against the frame as possible.
Hmm. That's not good.
When you say tight against the frame, do you just crank it up as far as you can? or have you put something (like foam) in between and then cranked it up?
Hmm. That's not good.
When you say tight against the frame, do you just crank it up as far as you can? or have you put something (like foam) in between and then cranked it up?
Yeah,.. Just cranked as tight as it would go.. No Foam. I had it loose before so that I could see the tire wobble when I kicked it.. That seemed to make things worse... So I was just aggravated with it and cranked it as tight as possible and with no wobble from the tire it felt like the shake and bake recovers quicker.
FWIW, I tried the Foam thing too.. Didn't make a difference for me..
I've only had my '08 DC for a week today. We don't have concrete highways here but I've noticed what looks like the bed moving indepently of the rest of the truck when hitting a big enough pot hole or bump. I haven't been underneath to see if the bed is mounted rigidly to the frame or if it's on some rubber type isolators, but it seems that this could only be the frame flexing. I never noticed anything like this with my '00.
I remember my dad buying a new '76 Chevy with the full 4 doors, 8' bed and dual wheels. It had what looked like blue shock absorbers between the cab and the upper rails of the bed. They were tucked in up under the inside of the bed rails. They must have been just some kind of dampener for the very same reason.
I was just reading an article fairly recently and Ford was taughting the fact that their new frame was X% more flexible than the previous model. They claimed this was a benefit to assist in keeping the wheels on the ground in rough terrain. My first thought was , what? Haven't they (all truck makers) been claiming that newer frame designs are always stiffer or more 'torsionally rigid' than previous years or the competitors?
Re: Possible Tundra Bed Bounce CURE FOUND
Re: Possible Tundra Bed Bounce CURE FOUND
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