If this truck does this over freeway expansion joints and speed bumps, what in the world will it do when taken off road?
That's the interesting thing. . . Off road this is an excellent truck!!! especially with the TRD pkg! I've taken it hunting up and down various rutted, washboard, pot-holed and otherwise marginal tracks and I've been impressed.
No issues with oscillation, not very bouncy at all. Of course I'm mostly comparing it with a 3/4 ton Dodge -- my previous ride -- and you really had to stay on top of that truck off road.
I think the bed bounce relates to a regular input of a bump at a certain frequency which reinforces a motion already started by the previous bump. That explains why it is so much more evident on certain roads, at certain speeds, and with specific loads (which influence spring recovery rate).
Quote:
Originally Posted by Cruiser13
With an empty bed and 8-10psi in the bags, the ride is stiffer and bouncier on blacktop. It still vibrates like crazy over the concrete. With a full load, thats another matter- but the bags don't make the difference, the weight does.
Thanks for the info on the block heater. I have a cabin in the mountains and the overnight temp is typically around 0*F in winter. She starts up without even a second thought, but I suppose a heater couldn't hurt. You just plug it into a power outlet right? Cost?
Well if I ever come to California I'll have to remember to throw some weight into the back of the truck to keep from bouncing around too much.
I just checked; the block htr. was $138 installed. I'm not sure how many watts it draws, probably like 100 or 200 watts: so to save my electrical bill I have it on a timer. It comes on at 4AM, so at 630 when I am ready to start the truck it's had a chance to pre-warm the motor oil a bit
__________________ [Tundra Bay]
Proud Member CBTMA
Radiant Red 2007 Double Cab Limited w/Graphite Leather Interior
Factory Nav, Sonar, and 10 spkr 440W JBL stereo with Sirius (sweet) Cold Weather Pkg and Block Heater. Brushed SS Stepboards,
Tires: BFG All Terrain T/A KO LT265 65 R 18, Diamondback Tonneau Cover.
Curt Front Receiver, custom 8" extension, & Warn 8000lb winch back/front mountable,
Tekonsha Prodigy Brake Controller DSP 16,000 lb 5th wheel hitch Firestone Ride Rite 2445 Air Bags
so to save my electrical bill I have it on a timer. It comes on at 4AM, so at 630 when I am ready to start the truck it's had a chance to pre-warm the motor oil a bit
Thanks. Great idea.
__________________
'07 Pyrite Mica Tundra Doublecab SR5 5.7 4x4 TRD w/ NAV, Total Chaos shackles, Bilstein 5100s on lowest setting, 275/70/18 E Michelin LTX AT2
'02 Landcruiser
They certainly won't help with the harmonic unless their is enough weight in the bed to make these 'extended' bumpstops touch. So you would still need a load.
__________________
'07 Pyrite Mica Tundra Doublecab SR5 5.7 4x4 TRD w/ NAV, Total Chaos shackles, Bilstein 5100s on lowest setting, 275/70/18 E Michelin LTX AT2
'02 Landcruiser
If this truck does this over freeway expansion joints and speed bumps, what in the world will it do when taken off road?
It does handle bumps and potholes quite well so I would imagine it would do well on the back roads for which it was designed. Perhaps they forgot to also design it for use on California-style freeways. Doesn't the California Governor drive a Hummer?
Stuball
__________________
2008 CrewMax Limited 2WD, Salsa Red Pearl w/Biege Int., 5.7 Eng., Moonroof, Nav/Cam, XM Radio, Remote Start, Running Brds with Foot Lamps, Woodgrain Trim, Billet Grill, 3M protection, Weathertechs, Bedrug, A.R.E. LSII Tonneau Cover, Air Lift suspension and using Amsoil.
Get your state or local governments to fix this...
__________________
Beer please! CBTMA (Member and Founding Father: Est. August 15, 2008)
Clicky>>> What The Heck is CBTMA
Unknown - "The biological purpose of pain is to prevent the recurrence of stupidity."
I haven't even done freeway driving as of yet, but I feel the bounce all of the time. The Tundra rides like crap over bumps if you haven't noticed. The wave oscillation of the bump through the frame into the bed continues well after you've hit it. This could be for the DC only, but anyone who says it's not there, doesn't know what they're looking at.
I've kept asking myself what the whole bed bounce issue is while at the same time wondering why the truck rides like a$$. This is a very serious issue and I'll get rid of the T before I continue to have my $34k truck ride like a POS. Fix it Toyota, or you'll lose a lot more business as this issue continues to be revealed!
The easiest way to show the "non-believers" is to pick your favorite stretch of bumpy road and take a ride. Then, have someone else drive duplicating the same variables (speed, bumps, etc...) while you ride in the back w/ your hand on the bed through the back window. Notice how the bed moves as you traverse the road. Then, take the same ride again and I'm willing to bet it will slap you in the face like a ton of bricks. "Oh SH|T...That's why the truck rides like a$$!" ... I can hear it now
that has nothing to do with bed bounce, that foam rubber (snake oil) does not apply here, since the spare tire is attached to the bed, come on guys let's be real, any bed is going to bounce some.
and for those people who fly over speed bumps or washboard roads slow down. ive got 12k on my DC and have never found need to complain about any portion of the ride of the truck or the backseat vibrating or anything like is posted in this thread.
also, all trucks that are in two pieces (i.e. not avalanches, el caminos etc) have parts of the body that move independently from one another. its a fact of life. if you guys think this so called "bed bounce" is an issue, try driving in an 80s or even older pickup. the beds werent even lined up when parked most of the time. things have improved tremendiously over the years but some people just cannot accept a truck is a truck and the bed wiggles. who cares.
I think some guys are referring to different things here. From where I sit there are 2 issues - and this is how I have termed them:
1. "Bed Bounce" - meaning the bed shakes back and forth and the suspension begin a harmonic oscillation that occurs on evenly spaced concrete road expansion joints. This results in a herky-jerky ride that is, from reports, extremely annoying. I have not felt this yet but have not been on a road that would cause it. Obviously all beds have some independent movement between the cab and bed - but the inability of the chassis to handle spaced bumps without doing the pogo pogo is a problem.
2. "Chassis Harmonic" - This is the one I feel - which is a vibration that reverberates through the chassis AFTER a single bump has been absorbed by the suspension. This, to me, feels like a shock that has lost its rebound control - though I know that is probably not the cause.
Thus striking a single bump - which should result in a simple "bump" with full absorption by the shock - results in a bump and then a few more vibrations that oscillate through the chassis after the bump has been fully absorbed by the suspension.
This second version makes the truck feel less than solid - like the chassis is creating a harmonic anytime you hit a bump.
Some of you guys seem to think it is just a part of driving a truck with a stiff suspension. I don't mind a stiff suspension - or a firm feel to bumps - but harmonics AFTER a bump should have been fully absorbed is annoying and not just a symptom of a stiff suspension. I don't even consider the Tundra's suspension STIFF anyway - which makes it even more irritating since the suspension is soft enough to ride smoothly.
So why the harmonics after a bump? Is it a frame issue?
also, all trucks that are in two pieces (i.e. not avalanches, el caminos etc) have parts of the body that move independently from one another. its a fact of life. if you guys think this so called "bed bounce" is an issue, try driving in an 80s or even older pickup. the beds werent even lined up when parked most of the time. things have improved tremendiously over the years but some people just cannot accept a truck is a truck and the bed wiggles. who cares.
It seems you have not encountered the "shake" yet, believe me the "shake" is pretty severe and annoying. I have owned trucks before and have never had this type of ride. It is like riding inside a paint can while it is in the mixer/shaker. My last truck had 2 inches of ground clearance and would lay frame everywhere and never did what this full size does in a stock configuration. The beds on all my other trucks had the wiggles once in a while not the shakes all the time.
__________________
'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.
I've experienced this in several different makes and models of trucks while driving on California roads. I was thinking if I box the frame and weld the bed to the body there wouldn't be any more flex... problem solved as the police don't like it when I do 95+ (which also solves the problem).
Re: Possible Tundra Bed Bounce CURE FOUND
Linear Mode
