Sponsored

Rear Squat with load advice needed

Polo08816

Well-known member
Joined
Aug 11, 2020
Threads
1
Messages
635
Reaction score
376
Location
MD
Vehicles
2014 BMW 335i
IMO, the best solution is an OEM solution such as the leaf springs from the Heavy Duty Payload Package. It may be the most involved install though. Theoretically (not legally), it should have 650-800lbs more Rear Axle Weight Rating capacity.
Sponsored

 

Mosey

Well-known member
First Name
Chris
Joined
Jun 26, 2022
Threads
106
Messages
855
Reaction score
725
Location
Michigan
Vehicles
2021 F-150 Powerboost
Yes max tow. Its how the weight adds up ( See my reply to post above) and how far it hangs off the back of the truck.
As you described the situation, you are probably over the GVWR. Putting your gear in the trailer would help. You also need to add the weight of a WDH too.
 

Star Lord

Well-known member
First Name
John
Joined
Apr 29, 2025
Threads
0
Messages
88
Reaction score
66
Location
Ashburn, VA
Vehicles
2023 F-150 Platinum
Yes and no.
The Timbren creates a “pogo stick” effect when the suspension travels and the “bumpstop springs” contact the axle. These suck when the truck is unloaded. They seem to stabilize well when loaded.

I had these on a Toyota and the 24 Powerboost. I removed them for now as I don’t need the added support often
In my case that was true at first but now it doesn't seem that much of an issue anymore.

Every option will be a compromise. This was one I could live with.
 

FaaWrenchBndr

Well-known member
First Name
Greg
Joined
Jun 23, 2024
Threads
13
Messages
2,552
Reaction score
2,555
Location
Denver, IN
Vehicles
‘24 XLT Powerboost
Occupation
Semi retired aircraft mechanic
In my case that was true at first but now it doesn't seem that much of an issue anymore.

Every option will be a compromise. This was one I could live with.
I guess different roads traveled.

It’s not an acceptable compromise here on two lane state highways. The bounce will nearly chatter your teeth and compress your spine.
 

Star Lord

Well-known member
First Name
John
Joined
Apr 29, 2025
Threads
0
Messages
88
Reaction score
66
Location
Ashburn, VA
Vehicles
2023 F-150 Platinum
I guess different roads traveled.

It’s not an acceptable compromise here on two lane state highways. The bounce will nearly chatter your teeth and compress your spine.
Never had anything that severe and I have driving all around the east cost. Maybe the clearance between the spring and the axle is greater on mine than on yours so they don't engage as much.

Hard to say.
 

Sponsored

24Carbon150

Well-known member
Joined
Mar 31, 2025
Threads
5
Messages
52
Reaction score
53
Location
colorado
Vehicles
2024 F150 XLT
Yes and no.
The Timbren creates a “pogo stick” effect when the suspension travels and the “bumpstop springs” contact the axle. These suck when the truck is unloaded. They seem to stabilize well when loaded.

I had these on a Toyota and the 24 Powerboost. I removed them for now as I don’t need the added support often
I experienced the same pogo effect with Timbrens, Sumos and Airbags. The only thing that doesn’t give me negative results under any circumstances is the RAS. Too many variables on the others that affected the ride negatively.
 

FaaWrenchBndr

Well-known member
First Name
Greg
Joined
Jun 23, 2024
Threads
13
Messages
2,552
Reaction score
2,555
Location
Denver, IN
Vehicles
‘24 XLT Powerboost
Occupation
Semi retired aircraft mechanic
Never had anything that severe and I have driving all around the east cost. Maybe the clearance between the spring and the axle is greater on mine than on yours so they don't engage as much.

Hard to say.
yeah, I don’t know mine set up as it supposed to be from Timbren……1.5” air gap

Any rate just info for other people out there. In my opinion, Timbren sucks if you don’t have a load on
 

Star Lord

Well-known member
First Name
John
Joined
Apr 29, 2025
Threads
0
Messages
88
Reaction score
66
Location
Ashburn, VA
Vehicles
2023 F-150 Platinum
yeah, I don’t know mine set up as it supposed to be from Timbren……1.5” air gap

Any rate just info for other people out there. In my opinion, Timbren sucks if you don’t have a load on
Understood. I guess it's a YMMV thing.
 

FaaWrenchBndr

Well-known member
First Name
Greg
Joined
Jun 23, 2024
Threads
13
Messages
2,552
Reaction score
2,555
Location
Denver, IN
Vehicles
‘24 XLT Powerboost
Occupation
Semi retired aircraft mechanic
Well, if you ever do is drive interstates, you only experienced the dips and irregularities that are on a two-lane blacktop road.

And like I said before, I’m not arguing with you. You don’t have problems with it fine, great, that’s wonderful. It’s about others who may be considering these Timbren pieces of shit.
 

dochawk

Well-known member
First Name
doc
Joined
Jul 20, 2024
Threads
26
Messages
711
Reaction score
517
Location
Las Vegas, NV
Vehicles
f150 soon? 3 classic Cadillacs, Miata, mustang civ
Occupation
retired!
I love any discussion that brings Physics into daily life, having an undergraduate degree in it [*gArblED*] years ago.

However, something about the title makes me think, "Grab the cat and run to the litter box before he finishes!"

? :explode:


:facepalm:
 

Calson

Well-known member
Joined
Jul 16, 2022
Threads
27
Messages
1,345
Reaction score
668
Location
Monterey CA
Vehicles
2022 F-150
It sounds like the rear leaf springs need an additional 100 lbs of load capacity. I added 1400 lbs to my HD truck using SuperSprings overload leaf springs that took me an hour to install and the truck's wheels stayed on the ground. I could have gone with air shocks but when one fails it would be a problem during a trip.

I also replaced the shocks with Rancho XL adjustable shocks and would set the shock firmness to double with a very heavy load in the bed. Took me 5 minutes to make changes to all 4 shocks to tune the handling.
Sponsored

 
 







Top