Rear suspension bounce

I have a 2021 Tundra that is currently at the Toyota dealer for a problem they don’t seem to be capable of fixing. They’ve had it for a total of 12 days over 3 different trips. This most recent trip, they gave me a loaner, a brand new 2023 SR5 with 4k miles. I’ve been driving the truck for 5 days now and it’s made me consider trading mine in for a 2023. It’s got some positives and negatives. Positives: it’s smooth, fast, nimble, quiet, and handles great. Negatives: it sounds like a minivan when you step on the gas, it’s completely gutless until 3k rpm’s, and the worst of all… the rear suspension is super bouncy!

The rear suspension bounce is a deal breaker for me. It makes the tailgate rattle over bumps because it’s so bad. If I put the rear window down, it is very loud, passengers have even commented on it. Today I got back from 3hr round trip ride and I had a headache from the bouncing rear suspension. It’s not like a vehicle with bad shocks, bad shocks produces a slow bounce, similar to a boat floating through some waves, these are sharp rather jarring follow up oscillations after hitting a bump. Is this a common thing with these trucks? Do the TRDPros suffer the same issue with the Fox suspension. I couldn’t drive this every day for that reason alone, but if a different trim level took care of it, I would consider going that route.

 

I noticed that my 23 Limited has pretty soft suspension front and rear, but it’s a TRD Offroad. Did the SR5 you drove have this
package?

Mine definitely doesn’t bounce like you are describing, but I do think I’ll put a stiffer set of springs in the rear now that I have a camper shell on it.

 

Sooo... Let see..

1. It's possible that the truck you drove may have a defect.
2. Is it regular suspension or Trd suspension? Find our and try another one. Also try Trd pro as it will be absorbing bumps much better.

You can also upgrade the shocks so it absorbs bumps better - I got regular suspension no trd and before I added weight with camper, it was terrible and jarring at handling potholes.
3. Are you interested in adding a camper i I tonneau cover? There would fix the rattling bed issue. It did for me. There's a big thread on fixing this rattling bed issue by yourself as Toyota wouldn't do it because no tsb from corporate.

4. Try to test drive other brand new tundras to see if you can find one with better suspension and no bed noise. Do more research on this forum and look for other common issue such as wind noise on freeway, humming noise from rear when driving above 80mph, and other rattles etc.

By the way, I would wait to buying new Tundra until they figure out what's causing the bearing failures... See sticky thread

 

Look at emergency flasher switch. If there is an up and down switch to the right of it then that truck has rear air suspension. They are bouncy and bang over larger bumps. A simple adjustment corrects this problem. If it has air suspension that truck may not have had the correction done yet.

 

I have the TRD Sport and no issues with it at all in this regard. So consider other trims since suspensions do vary.

For acceleration what drive mode are you in? Give Sport a try and see how it goes. I have no issues chirping the tires when the mood or need arises.

 

I’m having the same issue. I have a 2024 Tundra SR5 with the SX package. I was super excited about the truck. However, interstate driving is TERRIBLE! Even my wife noticed the insane amount of bouncing in the rear suspension. Has anyone talked to a dealership or had anything to fix it?

 

My '22 Is a TRD off road with that suspension. It was super stiff in the rear when we first got it but after adding 1" spacers, it became much more enjoyable.

There are differences with the suspension, I drove an SR5 but found it a bit stiff. My Limited is nice now even with the stiffer tires. The. only thing I don't like are those highway transitions that cause a bit of side shift of the rear end. My BMW does that as well to a lesser degree and other trucks, I have had, did that as well.

It is even better if you have a bit of weight in the bed to get the suspension moving. I have about 200 lbs. of stuff bolted to the truck like the cover/rack and skid plates and running boards.

 

Wow gutless under 3k rpm, its peak torque is 2,400 rpm

that’s interesting, mine doesn’t seem like that at all

platinum avs has the best ride as you can dial comfort mode if that’s what your looking for , it’s comparable to the ram which has the best ride hands down. You can then dial normal or sport if you want it tighter

 

Glad I wasn’t the only one to experience it. That 3hr road trip I took, I couldn’t wait to get out of the truck, and that was only 1.5hrs each way with a 3hr break in between drives. I’ve decided to keep my 21 instead. I’ve made 6hr road trips in the 21 and enjoyed every minute of it. A brand new $50-70k truck shouldn’t need suspension mods to not give me a headache from driving it.

 

No issues at all with my TRD OR Limited.
Maybe you needed to talk yourself out of a new truck?

 

It just sounds like the SR5 suspension is shit compared to the TRD or limited.

 

Seems to be the case. Unacceptable at that price tag.

 

Quite the opposite in fact, I was looking for an excuse TO buy a new truck. The fact I’m not the only one with this problem shows it’s not an isolated incident.

 

Sounds like shocks are not properly tuned for the coils and unsprung mass.

 

There are quite a few TRD Offroad and some TRD Pro suspension parts for sale. If you like the truck, you can always grab those and stick them in.

 

After having mine for about a month, the jarring from normal roads (not the best, but also not the worse) is starting to drive me crazy. It’s shaking up drinks it gets so bad. I’ve tried lower tire pressure, higher tire pressure, re-balancing. I’m to the point of looking into suspension. 2025 Limited Hybrid 4x4. I’ve added 1.75” to the front and 1.25” to the rear, maybe the rear shocks are stretched because of the added height and not able to absorb bumps? It’s really making me dislike my very expensive truck….

 

Eibach is your solution. I suffered with stock shocks for two years, hated every day of driving it

https://www.tundras.com/threads/bilstein-vs-eibach-for-the-2022-tundra.157934/#post-3911895

 

this is the exact set up I’ve been finding myself coming back to. Had the tires road force balanced today, just to take them out of the equation and 2 were off pretty good and one was counter-balanced. That improved some of the bounce around 55mph. Looks like I’ll be ordering this set up soon. No more spacer lifts or stock suspension coming soon lol.

thanks everybody for the responses.

 

Update: Got the Eibach Pro Truck Stage 2r kit with the Lift Springs installed on Thursday…. No change in the jar/bounce sadly… got another alignment, balanced tires, and changed up pressures again and no change. The kit IS an improvement in handling though. It actually made the normal road imperfections easier. But random jar/bounce is still around. Unfortunately I will be calling the dealership tomorrow because I’m at a loss. Surely a 60k+ truck can handle some E rated tires. There’s got to be more than the tires going on here.

 

I'm not sure what jar and bounce you're referring to. Eibach suspension absorbs any and all bumps and uneven surfaces very well and smoothes it out better than my wife's MB gle suv. Maybe you're referring to some other issue?

By the way, dealership won't help you anymore as you upgraded to after market suspension

 

Unfortunately $60k doesn’t mean the suspension is rated to handle E rated tires. I know a ton of Tundra owners who have installed E rated tires and ended up with vibration and ride quality issues. I highly recommend people steer away from them. They add a huge percentage of unsprung weight and the suspension cannot deal with the road force imparted by the heavier, thicker ply tires. The acceptable amount of road force for the suspension of a half ton pickup is generally not to exceed 25lbs while the acceptable amount of road force for a load E tire can be 35lbs or more. I personally fought with these same issues on Tundra when I put on load E tires. I tried everything to get rid of the vibrations, went so far as replacing the tires, but what cured it was going to a lower load rating. I went to a D rated tire, knowing that exceeds what’s the manufacturer recommended, but it made a huge difference in curing the vibration and ride quality issues.

 

I figured I would at least get them to check it out. It’s unreal how this truck rides.

 

I’ve found the Falken at4w in a 35”x11.5r20 in a D rated, but they’re heavier than my current E rated Recon grapplers. I guess I’ll need to drop tire size too to make a difference.

 

Stay away from load e, it’s a half ton, completely not needed

if want the size then you gotta pay to play

going back to the dealer with all aftermarket stuff, don’t waste your time

 

Another perspective, I run E rated 285/60 r20 KO3s in my 2025 Limited with a stock suspension and have zero issues with ride quality. I just made a 450 trip to Boise and they were nothing short of superb.

 

ride quality is so subjective, some like a more truck like ride others not so much, etc. also the roads where you live can make a huge difference for sure.

also, I find the older I get the more smooth I want it

 

Some people don't have issues, it's the luck of the draw though, it's not guaranteed. The simple fact is, that load E tires have higher acceptable limits of road force that are typically outside of what a half ton suspension is able to cope with. That aside, there is a noticeable reduction in ride quality as well, anyone who's being unbiased about their purchases will admit it, the problem is the ones who are in denial or don't want to admit they bad a investment. Once you get used to the harsher ride quality, most will say "I don't notice the difference in ride quality anymore", but that's only because they've become accustom to it. It's the same concept as becoming nose blind to smells, it becomes your norm. However, the trip to the tire shop to swap from stock tires to load E feels very different from the ride home.

At the end of the day, it's up to you though. As long as you go in knowing full well that you're trading increased tire toughness for a degradation in ride quality/comfort and you're prepared for some level of vibrations at high speed, then go for it! Who knows, maybe you'll get lucky and not have any vibrations... that has not been my(and many others) experience for three different sets of load E tires though.

 

I have had luck with E rated tires on multiple prior trucks, all with the same size tire (285/65r20), and all Nitto brand. I ran out of luck with this one and am throwing in the towel after only 1500 miles... Going to get a price on a set of 275/65r20 116T Nitto Recon Grapplers tomorrow, may even look into some other tires if they have more options. The load rating will drop from the E rated 3860lbs at 80 psi to 2756lbs at 44psi, but that shouldn't be an issue for what I do with the truck now.

 

I imagine it will be an improvement, though your bounce issue does seem to be more than just tires. The loaner Tundra I had did it when it was bone stock. Interesting data point though, I rented a 2024 lately for a long road trip and it didn’t do it. Same trim level and everything. If the tire shop does road force balancing, I would highly recommend it.