3rd gen rear suspension question

I am new to this and need y’all’s help. I have a 2019 TRD Off Road with Eibach stage 1. I purchased the truck with the Eibach’s on it. The rear seems to ride substantially rougher than the front. I almost never have stuff in the bed but want the ability to use it as a truck if needed.

My question… Are the Eibach’s the reason for rough ride or is it the leafs? If it’s the leaf, what solution for a smoother ride do y’all suggest?

 

Switched to the RXT leaf pack and a little weight in the rear and it’s a totally different truck.

 

Is it possible you have a block lift in the back the previous owner didn’t tell you about ?

 

908Tacoma. I’m not sure what has been modified in the suspension. Would photos of the leafs help?

 

I would say yes there is a block.

 

Yea. That’s a block. Remove it and see how you like the ride quality after

 

I’d imagine the block is the culprit. Remove and find out.

 

Please explain how a block under the leafs would have any impact on ride quality...cause it doesn’t. Check the Eibachs over though

 

Curious about this too.

Full disclosure, I've never run a block lift. But I'm having a hard time understanding how a block could stiffen the ride when the spring rate hasn't changed. I could see vibrations or something like that due to driveshaft angle or undesirable geometry from the lift.

I would expect a noticeable/semi noticeable change in stiffness adding a leaf/swapping the leaf pack. Because the rate has been altered.

I'm wondering if one or both of those rear shocks do have something wrong with them.

 

I also don’t understand the engineering / physics that would make the block cause a poor ride. Also the front already appears higher than the rear removing the block would exaggerate that.

Yes I would prefer lifted springs to a block but which ones will be softer than stock? Or is it the Eibach’s? The front seems perfect so not sure the Eibach’s are the issue

 

He said rear. And didn’t even know their was a block lift there until he looked. Are you trying to make the argument that a block lift is preferred to spring/shock or AAL?

 

I think you'll have to just troubleshoot it.

If it were mine I'd pull the rear shocks off and see if one of them is seized, or moves noticeably harder than the other. It's not likely both failed although I guess it's possible.

If they both move relatively easily, it and with the same amount of tension than I'd start looking at the blocks and springs.....mainly to see if something about the install was incorrect.

If you remove the blocks the front will be much higher than the back, yes.

 

A block serves only one purpose, to lift. No performance, compression, rebound etc. Everything your truck rolls over has to travel through that block after it initially impacts your tires. Think of it that way.

Are you running stock leafs in the rear? Is your rear shock travel an issue?

 

I have no idea if the springs are stock. And like I said I’m new to this so what is a cb spacer?

 

Ok so I just did a very unscientific experiment. I had my 215lbs son set on the tailgate. It drooped exactly 1” on both sides.

I have no experience with Tacomas. That droop and the ride is as stiff if not slightly worse than an F250.

 

You don’t have a spacer lift you have a block. Do you know which block? As others have stated your eibachs in the rear may be harsher than you had hoped. In combination with the block and stock leafs, it’s probable. Other parts, like bump stops, particularly on 3rd gens, also play a factor.

 

Your leaf springs look flat as a board. Either been warped and worn out from axle wrap exacerbated by the block or just old. With your springs so flat theyre not going to have much give on bumps…
Easiest thing to do is remove the blocks and go from there

edit: one more thing, there are a lotof threads showing on those ubolts, guessing the prev owner installed the blocks and used stock unbolts. Im wondering if it would be safer with extended u bolts. As much as it sucks you may want to remove the block and upgrade to new leaf pack (and extended u bolts) could put some spring back in the rear end…

 

Coming from cars with mostly stiff suspension (this is my first truck), can confirm the rear end of the TRD Off-Road (bought my 2021 new) is a total mess on the road. Not only is it harsh, but driving over choppy pavement at highway speeds literally causes the backend to skitter around. Really caught me off guard the first time it happened. I understand that's partly a result of a building a truck that has some utility (off-road, towing, and loaded), but man, it seems like they could have tuned some of it out.

 

The OR, Sport and Pro all ride quite differently.

 

I appreciate everyone’s input. I too am coming from cars, my last 2 vehicles were Scat Pack Chargers (my wife still drives a Scat Pack Challenger).

I am prepared to put new leafs on it just want to make sure that’s the issue. AND I am looking from the experience here in which leaf’s to choose. The first response was Icon’s. What is everyone’s thought on which leaf to go with and what lift hight do I go with to match the Eibach on the front?