Sponsored

Payload increase from axle and suspension upgrade?

PyrPatriot

Well-Known Member
Joined
Oct 27, 2019
Threads
193
Messages
2,669
Reaction score
1,859
Location
Kentucky, USA
Vehicle(s)
JT Sport S Max Tow; Honda Element
Does anyone know if you upgrade to Dana 60/80 axles, and a better suspension, do you increase the payload?

Would probably need a stronger engine though, which would need an appropriate transmission.

How much of a beast of burden would this be? Towing wouldn’t increase too much because in all likelihood you screwed up Jeep’s fancy engine cooling engineering. But payload should be better.

How much more weight do the upgraded axles handle? Would you go from a GVWR of 6250 to 10,000?
Sponsored

 
Last edited:

Blade1668

Well-Known Member
First Name
Darrell
Joined
Jan 7, 2020
Threads
11
Messages
2,344
Reaction score
2,119
Location
N. AL.
Vehicle(s)
90XJ, 91XJ, 91MJ, 05 LJ, 20 JT
Build Thread
Link
Vehicle Showcase
1
Vehicles frame and bed would still be limiting factors more than likely. Frame rails crushing from added weight. My wild a## guess
 

smlobx

Well-Known Member
First Name
Eddie
Joined
Jun 28, 2018
Threads
65
Messages
2,063
Reaction score
3,284
Location
Mid Atlantic
Vehicle(s)
JTR, F-350 diesel, Porsche Spyder, Model Y
Occupation
Semi retired consultant
Does anyone know if you upgrade to Dana 60/80 axles, and a better suspension, do you increase the payload?

Would probably need a stronger engine though, which would need an appropriate transmission.

How much of a beast of burden would this be? Towing wouldn’t increase too much because in all likelihood you screwed up Jeep’s fancy engine cooling engineering. But payload should be better.

How much more weight do the upgraded axles handle? Would you go from a GVWR of 12,500 to 20,000?
you’re joking right?

An F-250 4x4 only has a gvwr of 10,800 max....
 

smlobx

Well-Known Member
First Name
Eddie
Joined
Jun 28, 2018
Threads
65
Messages
2,063
Reaction score
3,284
Location
Mid Atlantic
Vehicle(s)
JTR, F-350 diesel, Porsche Spyder, Model Y
Occupation
Semi retired consultant
Well that’s a start...

There’s a lot more than axle rating that goes into calculating the GVWR of a vehicle.
Among the things that come to mind are:
1. Tire load rating
2. Wheel load rating
3. Braking capacity
4. Vehicle stability
5. etc., etc., etc.

IMHO if you want a higher GVWR you should just get another truck...
 

Sponsored

jjmstang

Well-Known Member
Joined
Aug 26, 2019
Threads
10
Messages
210
Reaction score
150
Location
Maryland
Vehicle(s)
2020 Gladiator LE
At least in Maryland if the vehicle was born ( made ) to haul 5,000 lbs ( or whatever amount ) no matter what you do to that vehicle it stays at 5,000 lbs. Your could put Rockwell 2 1/2 ton planetary's under it and it would still be a 5,000 lb load carrying vehicle.
 

NC_Overland

Well-Known Member
First Name
John
Joined
Feb 21, 2020
Threads
17
Messages
1,680
Reaction score
1,910
Location
Raleigh, NC
Vehicle(s)
2020 JT Overland
Well that’s a start...

There’s a lot more than axle rating that goes into calculating the GVWR of a vehicle.
Among the things that come to mind are:
1. Tire load rating
2. Wheel load rating
3. Braking capacity
4. Vehicle stability
5. etc., etc., etc.

IMHO if you want a higher GVWR you should just get another truck...
Engine cooling too. That was a big factor in the development of the JT.
 
OP
OP
PyrPatriot

PyrPatriot

Well-Known Member
Joined
Oct 27, 2019
Threads
193
Messages
2,669
Reaction score
1,859
Location
Kentucky, USA
Vehicle(s)
JT Sport S Max Tow; Honda Element
Well that’s a start...

There’s a lot more than axle rating that goes into calculating the GVWR of a vehicle.
Among the things that come to mind are:
1. Tire load rating
2. Wheel load rating
3. Braking capacity
4. Vehicle stability
5. etc., etc., etc.

IMHO if you want a higher GVWR you should just get another truck...
wheel and tire load capacity is the easiest/cheapest part to address. Load range E tires on steel wheels.

Braking capacity is a good point. The JT already has great brakes for towing requirements, so they should be fine

Engine cooling too. That was a big factor in the development of the JT.
but that was for towing, not payload
 
OP
OP
PyrPatriot

PyrPatriot

Well-Known Member
Joined
Oct 27, 2019
Threads
193
Messages
2,669
Reaction score
1,859
Location
Kentucky, USA
Vehicle(s)
JT Sport S Max Tow; Honda Element
True, and I figured that someone would point that out, but if you haul enough weight in the bed it will come into play.
Eventually. I'm not experienced in the field but tell me if the thought process works

Cooling is the limiting factor for the towing. Towing being the strain on the engine, generates more heat. Max towing is 7650lbs, which means tongue weight should be about 765lbs. That's almost exactly half the payload of a Max Tow sport. So with a 150lb driver, you have 785lb of payload left (assuming 1500-1600lb payload capacity; driver weight discussed in other threads, it's mentioned in the user manual and documents published by FCA, and is the weight accounted for in the tow rating test). But towing is a different stress that payload, because you are having to push your 5000lb truck and pull the 7650lb trailer. I think the combined weight of vehicle and trailer for the Max Tow can't exceed 12,500lbs according to a little card Jeep sent me (makes sense, 5000lb vehicle + 7650lb trailer - 150lb driver = 12500lbs) So the cooling system is designed to move that much weight. I'm not saying you could have a 7650lb payload, because that would break the axles. But the cooling system should in theory be able to move that much weight, less how much is factored into weight concentrated in abed vs spread out via trailer (surface area, more tires for rolling resistance, a couple more factors to consider)
 

Sponsored

NC_Overland

Well-Known Member
First Name
John
Joined
Feb 21, 2020
Threads
17
Messages
1,680
Reaction score
1,910
Location
Raleigh, NC
Vehicle(s)
2020 JT Overland
It would have to be a LOT of weight in the bed before it was a factor. I mentioned it because of some crazy GVWR numbers mentioned earlier in this thread.
 
OP
OP
PyrPatriot

PyrPatriot

Well-Known Member
Joined
Oct 27, 2019
Threads
193
Messages
2,669
Reaction score
1,859
Location
Kentucky, USA
Vehicle(s)
JT Sport S Max Tow; Honda Element
It would have to be a LOT of weight in the bed before it was a factor. I mentioned it because of some crazy GVWR numbers mentioned earlier in this thread.
Yes, for which I corrected. This thread was made around 3am after I put a crying newborn to sleep lol.
 

Lives The Dream

Well-Known Member
First Name
Meericole
Joined
Oct 1, 2019
Threads
9
Messages
90
Reaction score
117
Location
The basement.
Vehicle(s)
1955 cj5, 1995 YJ, 2006 LJ Rubicon, 2020 JT
How much would the bed floor and sides be rated at? And would you be hauling lead? It’s only a 5 foot bed, you would also be limited by physical size, I would think.
 
OP
OP
PyrPatriot

PyrPatriot

Well-Known Member
Joined
Oct 27, 2019
Threads
193
Messages
2,669
Reaction score
1,859
Location
Kentucky, USA
Vehicle(s)
JT Sport S Max Tow; Honda Element
How much would the bed floor and sides be rated at? And would you be hauling lead? It’s only a 5 foot bed, you would also be limited by physical size, I would think.
I'm considering more of just a few hundred pounds increased payload needed for overlanding applications. Carry more stuff, not crazy worksite loads. Something like being able to haul a full ton.

Hell, the Tesla truck is claiming to be able to have a 4500lb payload
 

ALVagabond

Well-Known Member
First Name
Mark
Joined
Dec 9, 2019
Threads
4
Messages
384
Reaction score
498
Location
Madison, AL
Vehicle(s)
2020 JTR "Praetorian"
At least in Maryland if the vehicle was born ( made ) to haul 5,000 lbs ( or whatever amount ) no matter what you do to that vehicle it stays at 5,000 lbs. Your could put Rockwell 2 1/2 ton planetary's under it and it would still be a 5,000 lb load carrying vehicle.
This is basically true everywhere. The placard is certified and can't be changed.
Sponsored

 
 



Top