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TundraGeneral discussion forum for the 2007 and later Toyota Tundra.
This is a discussion thread titled "Crewmax Truck bounce-not just bed-whole truck", within the Tundra forum, part of the Truck Forums category.
Here in the Houston area we have some bad roads too. I am buying the TRD sway bar as I write to help the bounce. I have also purchased the water bag for when the wife goes on trips, she doesn't like the boob bounce. There is a member who has installed Rancho shocks with good results. There is also a foam install between the spare tire and bed that has helped some. Lots of great info on this forum and also lots of great people too. Run a search on "bed bounce" and you will get more info than you want to read.
Good luck
Last edited by The Phoenix; 01-14-2008 at 01:06 PM.
Thread edited. Knock it off with the troll talk already too.
Apologies all around and to the Mod too. The post sounded very fishy to me. Sorry if I turn out to be wrong.
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2007 SR5 CrewMax, SiLver w/5.7 V8
>Bakflip Tonneau Cover.
>Rampage Running Boards.
>Heavy Duty 6 ft. Rubber Bed Mat
out of my 2000 Tundra cut to fit!
Here where I live (in Idaho) my truck has no bounce issues at all, but this last summer I was in Utah and yes it did the bounce thing. It is the design of the truck along with the shi**y built highways. I added 200# to the bed for traction reasons on slick roads and it smoothed the old girl out beyond belief. So my advice to all with the bounce issue is to add the weight or sale it and get something else. Who knows if Toyota will ever come up with a cure when there is such a slight percent of people with the issue.
The tundra is not the only truck with this issue. I watched a newer crewcab F150 bed bouncing up and down one of the roads here in AZ.
I attribute this to the shocks. The dampening for the compression and rebound is out of whack for an empty load.
I haven't towed my trailer yet, but I would assume that when I have a load in the bed the bounce will be nil or close to it.
I have had many a discussion with Sway-a-way about ride quality, one of the engineers there said they had the same problem with an F350. The thing rode the best when the shocks were removed and only the leafsprings were left. This however provided for the old cadillac with blown struts, it looks like it's doing the wave.
They found that by removing the compression dampening and leaving the rebound dampening the truck didn't porpoise and it rode much better.
I have a friend that has an RCSB and he put RS9000 shocks on the rear and set them at the softest setting and he got rid of the bounce completely.
So my thoughts are than Toyota missed on the shocks.
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08 Silver Crewmax 5.7 4x4 SR5...
Work in progress...
ARE YOU THINKING ABOUT MAKING A NEW POST??? TRY SEARCH FIRST!!!!!
The tundra is not the only truck with this issue. I watched a newer crewcab F150 bed bouncing up and down one of the roads here in AZ.
I attribute this to the shocks. The dampening for the compression and rebound is out of whack for an empty load.
I haven't towed my trailer yet, but I would assume that when I have a load in the bed the bounce will be nil or close to it.
I have had many a discussion with Sway-a-way about ride quality, one of the engineers there said they had the same problem with an F350. The thing rode the best when the shocks were removed and only the leafsprings were left. This however provided for the old cadillac with blown struts, it looks like it's doing the wave.
They found that by removing the compression dampening and leaving the rebound dampening the truck didn't porpoise and it rode much better.
I have a friend that has an RCSB and he put RS9000 shocks on the rear and set them at the softest setting and he got rid of the bounce completely.
So my thoughts are than Toyota missed on the shocks.
I tend to think its the new Design on the shocks being outside the frame. In the past Tundra's shocks where mounted inside the frame rail's and Toyota copied Ford's design from there new Introduction on the New f-150 design. Wile it's a good design and has a soul purpose I tend to think there are certain limitations This has on the overall Ride quality on certain types of road's.
The rear section on Tundra Triple tech frame is also Trapezoid. The leaf springs are toe out-the front mount father out the rear. So what does this all state to Buyer's very good lateral stability when cornering or towing but the problems are unloaded on certain road's it's a little rougher.
Erik
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T3 Grill, Line X extra front Bumper coating (too many mod's to list)
Last edited by Tundrav8yamaha; 01-14-2008 at 04:00 PM.
I tend to think its the new Design on the shocks being outside the frame. In the past Tundra's shocks where mounted inside the frame rail's and Toyota copied Ford's design from there new Introduction on the New f-150 design. Wile it's a good design and has a soul purpose I tend to think there are certain limitations This has on the overall Ride quality on certain types of road's.
The rear section on Tundra Triple tech frame is also Trapezoid. The leaf springs are toe out-the front mount father out the rear. So what does this all state to Buyer's very good lateral stability when cornering or towing but the problems are unloaded on certain road's it's a little rougher.
Erik
I can somewhat agree with this, but that means just change the dampening of the shock and it should aleviate this for the most part, no matter where the shocks are located.
look at all the aftermarket suspension stuff, granted it doesn't change the frame shape or style but a lot of times the owner will relocate shocks, and I haven't heard about some awful bed bounce when unloaded situation from the owner of these trucks. granted they were purpose built nontheless I haven't heard anything about bouncing.
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08 Silver Crewmax 5.7 4x4 SR5...
Work in progress...
ARE YOU THINKING ABOUT MAKING A NEW POST??? TRY SEARCH FIRST!!!!!
Sounds to me like on certain freeways, the truck suspension reaches its resonant frequency. That is when things ( vibrations) get out of control and the whole truck rattles and shakes.
The flexibility of the frame allows that, but there are ways to control that situation. One way is to reinforce that frame, which is obviously not easy.
The goal here is to damp that particular vibration frequency.
Other ways are:
* To change the tire pressure in the back and/or in the front tires.
* Softer shocks in the back will help too, along with stiffer springs ( or an ADD_A_LEAF which keeps the original leaf springs but adds a strong leaf below.
* There are Pressurized load levelers out there that add stiffness to the rear suspension when you tow a heavy trailer. Those are nice because you can add whatever air pressure to tune your particular truck. Firestone make a good one called: RIDE RITE. I think one of those will help reduce the bed bounce by changing the frequency of the suspension.
* Another option is an ANTI SWAY BAR. Those will stiffen the "connection" between the rear axle and the truck frame, thus making the truck more comfortable and will definitely reduce the bounce.
I am sure there are other ways to help that situation, I just expressed a few of them.
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Boosting happily ...
List of mods ( growing Daily ): L.E.D.s inside , Camper Shell with inside lights, Back up sensors and Camera , Subwoofer and Amp , Scangauge II , Hellwig Rear Bar , Billet Rear windows hinges, K&N Air Intake , Heated Seats, Tailgate assist bar, Westin Bull Bar and Skid Plate, Under hood lights, 1.25" Spidertrax spacers in Front, 1.50 " wheeladapter spacers in back, Ultimate window tint.
Last edited by Boosted27606; 07-10-2008 at 04:12 PM.
Reason: misspellings
The rude people need to go. Lets kick them off this site. :-)
Welcome to this site Shiftee. There are some really helpful people on this site. I get a lot of useful information from this site. Some people here will help you in anyway they can. Enjoy the site.
sure there are some rude people here. just like anywhere else. but alot of people here, need to develop a sense of humour. and be able to accept a little constructive criticism. I have never seen a forum, where the mods were so anal before. the 350z forum i frequent, is full of guys, giving eachother a hard time. and everyone laughs about it. its full of information, but it is also my source of entertainment at work.
the people that need to be kicked out, are the people that keep making ridiculously stupid comments. and are serious. i can think of 2 frequent posters, off the top of my head. that should be given the boot. but unfortunately i cant say names, or im sure to get a pee pee slap from a mod.
oya, just so im on topic. my CM ltd. rides great. i just took it on a winding trip through the mountains. the truck had no problems doing 100mph most of the way. more than half of it was with a 2 place jet ski trailer on the back too. my buddies in their viper, and charger SRT8. were pretty amazed that i could keep up. definitely no bed/truck bounce here.
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2007 Tundra LTD CrewMax, Black
2006 Chrysler 300 SRT8, Brilliant Black, Tinted Windows, Full Stereo, 22" wheels, Magnaflow hi-flo cats, Corsa cat-back exhaust, VORTECH SUPERCHARGED
2005 Yamaha R1, Blue
Last edited by Someguy123; 07-10-2008 at 07:40 PM.
Maybe part of your problem is being in Poke country to begin with.
I have a CM as well and I get this bouncing frequently (mostly on I-40).
I am not sure what the solution is but I would definitely be a fan of a bunch of people calling Toyota, filing complaints, and seeing if they can begin researching this if they haven't already.
Other than taking that poor truck into dreaded Cowboy land it really is a good vehicle. I am thoroughly pleased with mine.!
Mods/Installs: UniChip Programmer, AFE Stage 2 Cold Air Intake, Dumped Classic Chambered 3" Exhaust, Truxedo Low-Pro Tonneau Cover, Flush Mount Toolbox, EGR Slimline Sunvisors, 4% All Around 3M Window Tint, Anytime Backup Camera, and a few more mods.
Mods/Installs to Come: Eventual 2/4 Drop w/Air Spring Assistance.
Just got back from a cross country trip in my 07 4x4 limited crewmax. We swapped drivers for rest so I sat in every seat in the cab.
Back seat was a little bumpy on certain stretches of concrete interstate (Birmingham, Alabama) but nothing intolerable or as bad as what I've heard others describe. No significant bumpy feeling at all in the front seats.
I honestly don't know much about suspensions, but could it be that the rear suspension is too stiff initially and breaks in? I've towed quite a bit in my 20,000 miles - perhaps this is the difference.
i thought many issue's were addressed and resolved in the 2008's.
i don't need to go through the entire list from front to back & the interior and exterior.
i'm really concerned.
is there a way to resolve it?
even if i have to change out the rear suspension's leaf spring's, or add a leaf.
did anyone ever resolve it on there own?
or
do we just have to say thats the way it is?
i'd hate to drop 50 large, and have this issue, or any other issue.
i know enough now to buy the LIMITED, but after that, other than my must have options, i didn't know the 08's still had any issue's.
thanks,
gorilla
sure there are some rude people here. just like anywhere else. but alot of people here, need to develop a sense of humour. and be able to accept a little constructive criticism. I have never seen a forum, where the mods were so anal before. the 350z forum i frequent, is full of guys, giving eachother a hard time. and everyone laughs about it. its full of information, but it is also my source of entertainment at work.
the people that need to be kicked out, are the people that keep making ridiculously stupid comments. and are serious. i can think of 2 frequent posters, off the top of my head. that should be given the boot. but unfortunately i cant say names, or im sure to get a pee pee slap from a mod.
oya, just so im on topic. my CM ltd. rides great. i just took it on a winding trip through the mountains. the truck had no problems doing 100mph most of the way. more than half of it was with a 2 place jet ski trailer on the back too. my buddies in their viper, and charger SRT8. were pretty amazed that i could keep up. definitely no bed/truck bounce here.
Well stated dude I totally agree with you
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T3 Grill, Line X extra front Bumper coating (too many mod's to list)
My DCSB 4x4 rides fine so far, but i've got pretty low milage. I have the TRD package, and while occasionally it's bumpy on the highway, it's actually not unbearable.
What's really interesting, is on very nasty dirt roads it's perfectly fine! I turned off the country highway onto a dirt access road and even up to 50mph on the road the ride was amazing!
And it's not like it was a nice road, pot holed and washboarded to heck. My buddy in his Xterra had passed me on the highway that leads to the road, so i wanted to see if i'd catch him. Apparently his little truck found the dirt road a bit to bumpy since i caught up to him in no time at all. Then i had to give him some good natured ribbin about his wussy highway queen =)
I'm sorta thinking along Imdone's posted comments about compression and rebound.. crappy ride on the highway over expansion joints and such, and a smoother ride over rough terrain? Well, at least in all my experiences anyways.
On my bike i'd start messing with the suspension settings, trucks a different animal all together...
Re: Crewmax Truck bounce-not just bed-whole truck
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