a guy over at one of teh rv sites i frequent said
that the 2500 truck has a 6000 lb rated rear axle, and the factory wheels are rated at 4k each. so he said if he mounts on a set of tires to match the wheel rating of 4k, that this would raise his rear axle rating to 8000 lbs, and subsequently increase his trucks GVWR?
i know this is bs but he said it was discussed her and everyone was doing it, so i searched to no avail and i geuss his screen name there isnt the same as it is here????

didnt want to stir up a bee hive, but i think he is confused
thanks guys

if the axle is rated for 6k, it doesn't matter in he puts 22.5's super singles that are rated for 10k each, the axle is still limited to 6k...

if the axle is rated for 6k, it doesn't matter in he puts 22.5's super singles that are rated for 10k each, the axle is still limited to 6k...
our AAM11.50 axle is rated for 11,500 pounds.

weakes link is the springs and or rims and tires NOT the axle!

if DOT says your good and legit for said weight asking... who is going asgainst it?

a guy over at one of teh rv sites i frequent said
that the 2500 truck has a 6000 lb rated rear axle, and the factory wheels are rated at 4k each. so he said if he mounts on a set of tires to match the wheel rating of 4k, that this would raise his rear axle rating to 8000 lbs, and subsequently increase his trucks GVWR?
i know this is bs but he said it was discussed her and everyone was doing it, so i searched to no avail and i geuss his screen name there isnt the same as it is here????

didnt want to stir up a bee hive, but i think he is confused
thanks guys
stock rates on a 2500hd are as follows
axle 11,500lb
springs 6,000lb
stock rims 3500lb
the AAM and giving rim/tire combo it can weight 800-1000pounds. giving the max RAWR of 7000lb

leaveing the front alone. at 4800 pounds you can get the RAWR up tpo 11,200 of sprung wieght.. and a GVWR of a 15,000.

FWIW 3500drw truck has the same axle;)


and yes you did STP ;) jsut wiat for the weight police to arive :D

stock rates on a 2500hd are as follows
axle 11,500lb
springs 6,000lb
stock rims 3500lb
the AAM and giving rim/tire combo it can weight 800-1000pounds. giving the max RAWR of 7000lb

leaveing the front alone. at 4800 pounds you can get the RAWR up tpo 11,200 of sprung wieght.. and a GVWR of a 15,000.

FWIW 3500drw truck has the same axle;)


and yes you did STP ;) jsut wiat for the weight police to arive :D


I went to gm.com and under capacities it listed the 2500 as having a 6900 lb rear axle ratinggmc (http://www.gmc.com/sierra/2500HD/specsCapabilities.jsp)
i did see higher ones for the 3500 and DRW.
i did not see it listing all three trucks as having the same rear axle, which does seem odd from a marketing and profitability stand point if they really are the same( sort of wasting $$).
my point was if your rear axle is rated by the manufacter as say 6900 lb , then no matter what tires or wheels you added, that you were still limited to 6900 lbs as per the spec sheet for that axle.
it doesnt matter if its a gm, ford or dana axle or any other builder, if its rated at 6900lb then its rated at 6900lb, .n matter how many tires or air bags you add.
for example my rear is rated at 9k and 4800 up front
with a gcvwr of 26k and gvwr 13k
so my rear is a dually, and using the logic provided, my four wheels i could get four tires and wheels that are rated at 4 k each, then i theroretically carry 16 k on my rear axle???which would i guess raise my gvcwr?
and its a dually, so if i do the
thanks

This subject has been debated on here before. Many people do carry more than the manufacturer spec., legally. You must go to the D.O.T. have them inspect your entire package and pay the extra weight fees. It can be done, it has been done, and this thread should be done.

This subject has been debated on here before. Many people do carry more than the manufacturer spec., legally. You must go to the D.O.T. have them inspect your entire package and pay the extra weight fees. It can be done, it has been done, and this thread should be done.


i understand hot shotters doing this, but not everday rv folks.
the entire discussion started by someone saying his 2500 doesnt squat an 1" when he hooked up his fiver with a pin wt. of 3k lbs. which we al lknow is bs.

all suspensions squat.

I went to gm.com and under capacities it listed the 2500 as having a 6k lb rear axle rating
i did see higher ones for the 3500 and DRW.
i did not see it listing all three trucks as having the same rear axle, which does seem odd from a marketing and profitability stand point if they really are the same( sort of wasting $$).
my point was if your rear axle is rated by the manufacter as say 6k lb , then no matter what tires or wheels you added, that you were still limited to 6k lbs as per the spec sheet for that axle.
it doesnt matter if its a gm, ford or dana axle or any other builder, if its rated at 6k then its rated at 6k, .n matter how many tires or air bags you add.
for example my rear is rated at 9k and 4800 up front
with a gcvwr of 26k and gvwr 13k
so my rear is a dually, and using the logic provided, my four wheels i could get four tires and wheels that are rated at 4 k each, then i theroretically carry 16 k on my rear axle???which would i guess raise my gvcwr?
and its a dually, so if i do the
thanks

AAM american Axle manufacture rates the 1150 axles @ 4950KG * 2.204= 10,900lb

if you put 6,000 spring on something what is the point at rating it higher than that??? reguardles of what the actually axle can hold????

dodge 2500/3500 and GM 2500/3500 all have the AAM1150 rear axle inthe diesel application.

did you know that a D60 has a GAWR of 7,000 pounds?

i dont get my INFO form GM i go the guys that made the part.

what is the rear axle under your dually?

AAM american Axle manufacture rates the 1150 axles @ 4950KG * 2.204= 10,900lb

if you put 6,000 spring on something what is the point at rating it higher than that??? reguardles of what the actually axle can hold????

dodge 2500/3500 and GM 2500/3500 all have the AAM1150 rear axle inthe diesel application.

did you know that a D60 has a GAWR of 7,000 pounds?

i dont get my INFO form GM i go the guys that made the part.

what is the rear axle under your dually? 9000 lbs

makes sense, but is a bit over kill to provide a part of higher capacity but not use it...waste of $$ as well and we all know gm, dodge and ford dont give nothing away.

Not all 11.5 axles are the same. Some have larger tubes. I think the larger tubed axles will have a larger axle rating. I have a 11.5 I just bought and it has a 4in tube on it. What size tubes are on the 2500 and the dually?

Not all 11.5 axles are the same. Some have larger tubes. I think the larger tubed axles will have a larger axle rating. I have a 11.5 I just bought and it has a 4in tube on it. What size tubes are on the 2500 and the dually?
my 11.50 has 4" tubes

my 11.50 has 4" tubes

How thick are the tubes?

How thick are the tubes?
i dont know... thick enough for a 10,900# rating form AAM

9000 lbs

makes sense, but is a bit over kill to provide a part of higher capacity but not use it...waste of $$ as well and we all know gm, dodge and ford dont give nothing away.
didnt ask waht ford rated it for.. asked who made the axle. dana? sterling?


4800+6900 is 11,700.. yet Gm say 9200lb riddle me that:rolleyes:

4800+10900= 15,700

our AAM11.50 axle is rated for 11,500 pounds.

weakes link is the springs and or rims and tires NOT the axle!

if DOT says your good and legit for said weight asking... who is going asgainst it?

stock rates on a 2500hd are as follows
axle 11,500lb
springs 6,000lb
stock rims 3500lb
the AAM and giving rim/tire combo it can weight 800-1000pounds. giving the max RAWR of 7000lb

leaveing the front alone. at 4800 pounds you can get the RAWR up tpo 11,200 of sprung wieght.. and a GVWR of a 15,000.

FWIW 3500drw truck has the same axle;)


and yes you did STP ;) jsut wiat for the weight police to arive :D
all the above AAM rating i had wrong:o: follon quote is correct;)
AAM american Axle manufacture rates the 1150 axles @ 4950KG * 2.204= 10,900lb

I don't see how they rate the axle for one rating all across the board. I measured 2 today , one a single wheel 2500 and the other a 3500 dually cab and chassis and they were both 3.5" tubes and had different ratings on them.
I am in need of a spring pads for the one I bought but it has 4in tubes on it, it's from a dodge, thats why I asked about the size.
Malibu can you measure the one in your truck?

didnt ask waht ford rated it for.. asked who made the axle. dana? sterling?


4800+6900 is 11,700.. yet Gm say 9200lb riddle me that:rolleyes:

4800+10900= 15,700
are you saying the 11700 should be the gross vehicle weight rating?
if so, axles dont determine the gvwr of a vehicle, gvwr is determined by frame strenght, brakes, and other driveline components,


dana is my rear axle,
sterlings go in 350 srw, which by the way was also in dodges a few years back.
either way it doesnt really matter
if aam or dana or anybody else is building axles for companies, they build them to the customers specifications,
if we wanted them to build a 12 ton axle that was 23" wide, they would.

gm, ford, dodge, etc have specifications for thier axles and driveline components.
i am sure if you pull the part numbers fr a 2500 rear axle its different from that of the 3500 dually, even though you are sure they are the same.
assemblers ( thats all teh big three really are) dont put in over kil components, its not cost effective.
just like in other industry the parts are bult to meet design criteria
even though they might look alike on the outside

wall thickness of tubing makes a big deal in strenght
as does bearing size and even the axle shaft size itself
are you sure the axle shafts are the same, the wall thickness, bearings etc are all the same?

ford puts the same the single rear wheel axle under the 250 crew cab abd 350 crew cab, but its different under the 250 single cab


outside axle tube dimensions are irrelavent, the wall thickness determines the strenght of the tube , not over out side diameter

dont believe me
go look at a schedule 40 piece of PVC and a schedlule 80 peice
ntice the differnt wall thickness and subsequent diffenence in PSI ratings???

are you saying the 11700 should be the gross vehicle weight rating? yes
if so, axles dont determine the gvwr of a vehicle, gvwr is determined by frame strenght, brakes, and other driveline components,


the dmax allison is rated for 30,000GVW
there are two distint differences between a 2500hd and a 3500DRW chassis wise. pads for the over loads ont he rear axle. and one extra cross brace for thorssional stiffness. other than that the "C" channel is exact same.

the exact same engine tranny t/c goes in the 4500/5500 kodiaks. the only diff is the rear output yoke you can get 3 diff ones 1410, 1480 and 1510

BTW in answer to you PM i am in short a heavy equipmant mechanic for the navy... 90% of our semi tractor run under powered. 300-350hp... and we will load them out to 100k GVW...

for some reason the new MTVR semi tractor we are getting from oskosh have a 425HP cat in it.. but can only manage 25mph up a 7% grade with 20k trailer and a D7 dozer on the back....:confuzeld



ABTW.. F250 f350 chassis are excatly the same minus rear axle... my roommate who is diehard ford guy is looking up the link and i will poat it when he send me it.;)

this of a ford sight.... about teh 250/350 supoerduty
http://www.ford-trucks.com/forums/327623-please-help-w-superduty-gvw-and-gcvw-s.html?highlight=weight+rating+frame
if IBF250 is right all super duties have the same frame

i already told you the diff betwen the 2500hd and 3500

this of a ford sight.... about teh 250/350 supoerduty
http://www.ford-trucks.com/forums/327623-please-help-w-superduty-gvw-and-gcvw-s.html?highlight=weight+rating+frame
if IBF250 is right all super duties have the same frame

i already told you the diff betwen the 2500hd and 3500
actually i never said the frames were differnt iin 250-350 pickups
just the axles.

and the kodiak is a whole nuther animal
just because it has the d max engine and allison doesnt mean its ratings reflect the pickup ratings

seebbee splains it

so using your logic
and the link below
https://www.fleet.ford.com/showroom/rv_trailer_towing/2008/08RVttscltrp19Aug07.pdf
the 450 pickup with the 6.4 is rated to pull 24k lb trailer
and since it has the same engine as the 250 pickup i should just save my $$ and buy a 250 pickup with the 6.4 engine and go pull a 24k lb trailer because the 6.4 is rated to pull in it in a 450 pickup,

thanks
i see the light now

you asked can a guy raise his GAWR and his GVWR. short answer yes and do it legally as wel..

but apparrently some people think that 2+2 still =3 when it come to GVWR...

simple the horses mouth is D.O.T. if they say you are safe to operate at said weight.. then yours and any one else's whining bicthin and moaning does nothing............

you just dont get it
anyone can hook up to anything and go tow it, thats the easy part
but when folks are looking to buy a tow vehicle and can compare all the vehicles ratings side by side to buy something that fits thier needs, it doesnt do anything but confuse them when others say " you bought the wrong truck" or " jsut add airbags if your truck squats an inch with 3k on the pin"

all springs compress some with differnt degress of wt added to the rear of the vehicle, if not the ride would be pretty harsh and things would break off.

getting DOT to recertify your rig is an option, but is it the logical one for 90% of the real world folks towing loads.
mosr rv folks try to stay close to manufacturer recommendations

now hot shotters have a few in the business that think like you, if the kodiak or 450 or even a mudium duty truck has the same engine and tranny and can tow the world, then their little pickup with the same engine can to and put everyne at risk.
the best is at wrecks with 3/4 ton pickups demolished as ther overloaded combination is splayed out all over the road, along with their own dead body.


then you get sme that expect the assembler to make reapirs on a broken truck that was overloaded....

so why did you come over here... just to :stirthepo??????? and bait people?

so why did you come over here... just to :stirthepo??????? and bait people?
yeah sure
to try and understand your logic by telling folks to just add a 4k rated tire and wheel and add airbags because your chevy doenst squat


dont care what brand
just buy what suits your needs

yeah sure
to try and understand your logic by telling folks to just add a 4k rated tire and wheel and add airbags because your chevy doenst squat

never said that... said you can increase GVW, GCVWR, GAWR and has to been according to DOT...

I see where Malibu is coming from. In my research I've found that the limiting factor on RAWR for my 1 ton SRW is the rear tires. My RAWR is 6390 lbs, exactly double the 3195 lb weight rating of the tires on my truck.

The axle is rated at 11,500 or 10,900 depending on who you ask. Nonetheless, it's rated at much higher than the GM specs say.

It's not the drivetrain, it's used elsewhere in heavier trucks.

Not the frame, it's the same frame as the dually's.

Next could be the springpack. I forget what the rating on the springs are, but that could be as much as 10,000 lbs with a set of good airbags.

The wheels aren't far behind. I can't find a rating for the stock rims, but most replacement rims don't go over 3500 lbs.

So, with a swap of wheels and tires I could boost the RAWR to 7000 lbs (assuming the rims where the limiting factor).

Of course, this would exceed the door sticker. If I could get DOT approval, I could have my truck certified at a higher rating. This doesn't make it a MDT or even a dually, but it could make the difference between safe and illegal, to safe and legal.

the only way you are going to get even close to the full rating of the axle is either duals as a 16/17" rim or 19.5.

DOT will limit you to your weakest rating.

the only way you are going to get even close to the full rating of the axle is either duals as a 16/17" rim or 19.5.

DOT will limit you to your weakest rating.


That was where I was going. If you progressively address the weakest links in the setup, you can eke out some GVWR or RAWR. But the axle will never be the weakest link. With airbags rated at 10k, the springs probably won't either. My guess is that whatever rating you can get for your rims and tires will be the rating you end up with. Right now that appears to be in the 3500 lbs range, so I'm guessing the best you'll get out of a SRW truck is a 7000 lbs RAWR. If you could get rims rated higher, there are reasonably sized 17 and 18 inch tires that can support 3750 or 3640 lbs pushing you over 7000 lbs.

stock rates on a 2500hd are as follows
axle 11,500lb
springs 6,000lb
stock rims 3500lb

malibus right.
the tires are the weakest link. if you put on 3200lbs rims on now you know your highest weight is 6400. PM me guys if you need me to clarify what i did to up my gvwr on my 2500

How do you guys know the axle rating? Is it the same in all applications?

my gvwr is now 11,600. malibu is very helpful and knows what he's talking about. with stock rims and my toyhauler, i was pushing 10,600lbs gvwr. that didnt cut it. i went to the dmv here in az and talked to a dot man in a white chevy malibu (yes a malibu). he took about 2 hours looking at everything ex springs, bags, shocks, rims, tires and so on.

How thick are the tubes?
i dont play mechanic on axels :)

How do you guys know the axle rating? Is it the same in all applications?
found out who made the axle and what they said the axle weight rating form the manufactor is... according to AAM AAM1150 is 4950KG or 10,900lbs i had to verify that data.

yeah sure
to try and understand your logic by telling folks to just add a 4k rated tire and wheel and add airbags because your chevy doenst squat


dont care what brand
just buy what suits your needs
i think ford has a forum too...

i think ford has a forum too...
yeah we do
so again using this absurd logic
lets say you have a tandem axle trailer
it has a pair of 6k lb rated axles under it, fr a total of gawr of 12k lbs
so, again if he takes off the 3200 lb rated wheels and 3200 lb rated tires and installs 4 wheels with a 4000lb rating each and four new tires with a 4000lb rating each
did you or did you not change your axles rating to 8 k lb each?
answer NO.
your axles are rated at 6k lbs
the 8k lb axles have thicker wall tubing, diffrerent brakes, bearing and springs.


does DOT spec out the axles? are they structural engineers?
NO
so who is still liable in the unfortunate event of a wreck invovling a death. which was caused by AXLE failure/overloading to 16k lbs vice the rated 12k lbs


one was given very directed advice to just add stronger tires back on his truck to ramp up his rear axle rating from 6k lbs to 8k lbs.
see same shoe different vehicle.
and
the old adage of my truck is better n yours BS.
all light duty trucks will squat when 3k lbs are placed over the rear axle.
so the remark of "my gm truck is better cause it dont squat,i added stronger tires and air bags"

thats all

yeah we do
so again using this absurd logic
lets say you have a tandem axle trailer
it has a pair of 6k lb rated axles under it, fr a total of gawr of 12k lbs
so, again if he takes off the 3200 lb rated wheels and 3200 lb rated tires and installs 4 wheels with a 4000lb rating each and four new tires with a 4000lb rating each
did you or did you not change your axles rating to 8 k lb each?
answer NO.
your axles are rated at 6k lbs
the 8k lb axles have thicker wall tubing, diffrerent brakes, bearing and springs.


does DOT spec out the axles? are they structural engineers?
NO
so who is still liable in the unfortunate event of a wreck invovling a death. which was caused by AXLE failure/overloading to 16k lbs vice the rated 12k lbs


one was given very directed advice to just add stronger tires back on his truck to ramp up his rear axle rating from 6k lbs to 8k lbs.
see same shoe different vehicle.
and
the old adage of my truck is better n yours BS.
all light duty trucks will squat when 3k lbs are placed over the rear axle.
so the remark of "my gm truck is better cause it dont squat,i added stronger tires and air bags"

thats all
quite nuking the topic!

we are not saying rate and axle higher than the weakest link.. inthe case you mention yeah he can put 4k tires on.. the week link is the axle @ 6k

hes wrong and so are you.... quit over thinnking the subject...

chain is as strong as its weakest link. trucks can hold as much as thier weakest link..... that right now is springs and tires NOT axles.

yeah we do
so again using this absurd logic
lets say you have a tandem axle trailer
it has a pair of 6k lb rated axles under it, fr a total of gawr of 12k lbs
so, again if he takes off the 3200 lb rated wheels and 3200 lb rated tires and installs 4 wheels with a 4000lb rating each and four new tires with a 4000lb rating each
did you or did you not change your axles rating to 8 k lb each?
answer NO.
your axles are rated at 6k lbs
the 8k lb axles have thicker wall tubing, diffrerent brakes, bearing and springs.





No offense dude, but you are way off.

Take that same scenerio and imagine instead of 6000 lb axles he had 10,000 lb axles with 3000 lb rated tires. The axle rating is 6000 lbs, limited by the tires.

Now, swap out the wheels and tires for some rated at 4000 lbs each. His axle rating is now 8000, still limited by the tires.

If you follow this thread, you'll see Malibu has shown (and my own research concurs) that the limiting factor on the GM trucks is the tires and wheels. The actual axle rating is 10,900 lbs (just the axle). The 6390 RAWR on my truck is exactly double the 3195 lbs on my tires. If you improve those you can up your RAWR (at least on paper, only DOT or the manufacturer can change the stickers). Once you improve those, something else will become the limiting factor, such as the brakes, the chassis, the springs, etc.

quite nuking the topic!

we are not saying rate and axle higher than the weakest link.. inthe case you mention yeah he can put 4k tires on.. the week link is the axle @ 6k

hes wrong and so are you.... quit over thinnking the subject...

chain is as strong as its weakest link. trucks can hold as much as thier weakest link..... that right now is springs and tires NOT axles.



exactly what i said waaay back post #1
the axle is still rated at 6k lbs and is the weaker of the components.
but it was said to add 4k lb rated tires and wheels and it was said the axle is now ready to be re-rated to 8k lbs, vice 6k and i said no this is wrong and.....you come up with 11k lbs because aam builds the axles
so which is it now
???
post three made by Mr.malibu
"our AAM11.50 axle is rated for 11,500 pounds.

weakes link is the springs and or rims and tires NOT the axle!

if DOT says your good and legit for said weight asking... who is going asgainst it?"

I do believe he posted a correction to that.
This is a VERY interesting thread...I hope it can move in a positive direction.

Remember the axle rating is different than the RAWR that GM gives their trucks. The RAWR takes into account the axle, the wheels, the tires, and the springs. The axle on the 2500HDs is the same as the 1 tons, and is rated by the axle manufacturer for 10,900 lbs. GM and Dodge install them on their various trucks and 'de-rate' them for the application, i.e. 3/4 ton or 1 ton. In the case of the 1 ton, the RAWR rating is 6390 lbs, but that is because the tires are limiting the rating.

If I upgraded the tires to 285/70 R17 E's my tire rating would be 3750*2=7500lbs. Is my new RAWR now 7500lbs?

No, because the springpack is the limiting factor at 6500 lbs. So, I can install a set of airbags that generate 10,000 lbs of lifting capability. Is my RAWR now 10K lbs?

Nope, it's back to the tires at 7500 lbs.

Each item that goes into the RAWR has it's own rating, but the axle itself is rarely if ever the weakest component that limits the RAWR.

Remember the axle rating is different than the RAWR that GM gives their trucks. The RAWR takes into account the axle, the wheels, the tires, and the springs. The axle on the 2500HDs is the same as the 1 tons, and is rated by the axle manufacturer for 10,900 lbs. GM and Dodge install them on their various trucks and 'de-rate' them for the application, i.e. 3/4 ton or 1 ton. In the case of the 1 ton, the RAWR rating is 6390 lbs, but that is because the tires are limiting the rating.

If I upgraded the tires to 285/70 R17 E's my tire rating would be 3750*2=7500lbs. Is my new RAWR now 7500lbs?

No, because the springpack is the limiting factor at 6500 lbs. So, I can install a set of airbags that generate 10,000 lbs of lifting capability. Is my RAWR now 10K lbs?

Nope, it's back to the tires at 7500 lbs.

Each item that goes into the RAWR has it's own rating, but the axle itself is rarely if ever the weakest component that limits the RAWR.
:exactly:

Remember the axle rating is different than the RAWR that GM gives their trucks. The RAWR takes into account the axle, the wheels, the tires, and the springs. The axle on the 2500HDs is the same as the 1 tons, and is rated by the axle manufacturer for 10,900 lbs. GM and Dodge install them on their various trucks and 'de-rate' them for the application, i.e. 3/4 ton or 1 ton. In the case of the 1 ton, the RAWR rating is 6390 lbs, but that is because the tires are limiting the rating.

If I upgraded the tires to 285/70 R17 E's my tire rating would be 3750*2=7500lbs. Is my new RAWR now 7500lbs?

No, because the springpack is the limiting factor at 6500 lbs. So, I can install a set of airbags that generate 10,000 lbs of lifting capability. Is my RAWR now 10K lbs?

Nope, it's back to the tires at 7500 lbs.

Each item that goes into the RAWR has it's own rating, but the axle itself is rarely if ever the weakest component that limits the RAWR.



THANK YOU
Finally someone has hit the nail on the head
for this tidbit was left out of the post to the guy to raise his rawr. he was told just add tires,
it was not my intent to move in the wrong direction...

I was not aware a person would be able to get their vehicle recertified for weight. If this is really true, I might be a really happy camper.
I would like to get a 5th wheel, and most put me over in cargo capacity in the bed. I refuse to get the long box (it would kill me for daily use), and GM doesn't make a one ton in a short box :mad:

I already added air bags, but was not aware that those could figure in on a recertification. So my weakest link will be rims (stock) and tires.

From reading this thread I understand the Club Cab 2500 trucks share the same rear end as the one tons? I'd like to make sure I was reading things right. 10,900 rear end?

Go Malibu!!

I was not aware a person would be able to get their vehicle recertified for weight. If this is really true, I might be a really happy camper.
I would like to get a 5th wheel, and most put me over in cargo capacity in the bed. I refuse to get the long box (it would kill me for daily use), and GM doesn't make a one ton in a short box :mad:

I already added air bags, but was not aware that those could figure in on a recertification. So my weakest link will be rims (stock) and tires.

From reading this thread I understand the Club Cab 2500 trucks share the same rear end as the one tons? I'd like to make sure I was reading things right. 10,900 rear end?
thats what AAM rates it for. other things that effect it such as rims tires (as you stated) spring pack etc

Some states allow you to recertify to a higher rating. I'm in WA, and the trail of phone numbers has led me to the State Patrol. I haven't called them yet. Your state may be different.

The axle may be rated at 10,900 lbs but your rims and tires will probably be the major factor that limits your RAWR. From the research I've done, the best you could probably hope for is something in the 7000-7500 lb range for a RAWR. That would include proper tires (i.e. 285/65 R18 E or 285/70 R17 E), wheels (this is the hardest thing to find ratings for), and airbags.

Some states allow you to recertify to a higher rating. I'm in WA, and the trail of phone numbers has led me to the State Patrol. I haven't called them yet. Your state may be different.

The axle may be rated at 10,900 lbs but your rims and tires will probably be the major factor that limits your RAWR. From the research I've done, the best you could probably hope for is something in the 7000-7500 lb range for a RAWR. That would include proper tires (i.e. 285/65 R18 E or 285/70 R17 E), wheels (this is the hardest thing to find ratings for), and airbags.
x2. the highest rim ive seen for our trucks is the dick cepek rims at 3500lbs, right at the 7k mark for both

x2. the highest rim ive seen for our trucks is the dick cepek rims at 3500lbs, right at the 7k mark for both

Pro Comp has a couple of their forged models that are 3500 lbs. But I haven't seen anything other than 19.5's that are higher than that.

Pro Comp has a couple of their forged models that are 3500 lbs. But I haven't seen anything other than 19.5's that are higher than that.
the only thing higher then that is 17.5" rims but those are trailer tires and MDT rims 10 on something cant remeber the bolt pattern..

if you are going to be runnign the weight often.. recommend looking into the 19.5s plus ~100+k tire live as well

the only thing higher then that is 17.5" rims but those are trailer tires and MDT rims 10 on something cant remeber the bolt pattern..

if you are going to be runnign the weight often.. recommend looking into the 19.5s plus ~100+k tire live as well

Forgot about the 17.5s.

Rickson has the 19.5's that fit the GM trucks. You'd also need a lift kit and have to regear to 4.10s or 4.30s. Probably want to upgrade the brakes too. Have to get airbags.

If my math is right, the limiting factor would be the rims or airbags at 9000 to 10,000 lbs. Still, a 10,000 lb RAWR is pretty good.

Forgot about the 17.5s.

Rickson has the 19.5's that fit the GM trucks. You'd also need a lift kit and have to regear to 4.10s or 4.30s. Probably want to upgrade the brakes too. Have to get airbags.

If my math is right, the limiting factor would be the rims or airbags at 9000 to 10,000 lbs. Still, a 10,000 lb RAWR is pretty good.
you ccan run 245/70/19.5 = 33" 265/70/19.5= 34" neither one would need a "lift" 245 can be run at stock hieght 265 might need a TB crank and minor triming

in the 245 setup both birdgestone and michline have tires rated @ 4900lb in a single setup both are M&S rated.

all their steel rims are rated for 5,000 each

you ccan run 245/70/19.5 = 33" 265/70/19.5= 34" neither one would need a "lift" 245 can be run at stock hieght 265 might need a TB crank and minor triming

in the 245 setup both birdgestone and michline have tires rated @ 4900lb in a single setup both are M&S rated.

all their steel rims are rated for 5,000 each

I was looking at the 35" tires rated at 6300 bls (!). If you kept close to the stock size you could skip the re-gear and lift and save some coin.

I am more concerned that powerboater had issues with the math and logic. He should stop towing completely. Seriously, it took 5 pages to get him to understand.

Malibu was correct from the beginning and anyone that tows should have understood what his point was. The RAWR and axle rating are two completely different things.

I am more concerned that powerboater had issues with the math and logic. He should stop towing completely. Seriously, it took 5 pages to get him to understand.

Malibu was correct from the beginning and anyone that tows should have understood what his point was. The RAWR and axle rating are two completely different things.
x2
malibu: :hail:

I was looking at the 35" tires rated at 6300 bls (!). If you kept close to the stock size you could skip the re-gear and lift and save some coin.
225/70 are darn near stock size.. wouldnt have to change your speedo;)

So...I do have the 285's @ 3750, have added air bags, with stock rims still.
I could gain another 500 pounds by changing rims, but that probably wouldn't be worth it. The tires are new and they won't be changed out for some time (hopefully). Since the stock rims are 3500, that is my weakest link.

Does that mean I have an increase in carrying capacity? This could be an important developement to me as I didn't know about recertification.

IIRC stock PY0 rims are lower than 3500#, that's why the 3500SRW had to go to steel wheels.

BTW the axle ratings also are the braking capacity of the axle. so I wonder if our brakes are actually for 10,900# or the 6900 +/- GM rates them for?

So...I do have the 285's @ 3750, have added air bags, with stock rims still.
I could gain another 500 pounds by changing rims, but that probably wouldn't be worth it. The tires are new and they won't be changed out for some time (hopefully). Since the stock rims are 3500, that is my weakest link.

Does that mean I have an increase in carrying capacity? This could be an important developement to me as I didn't know about recertification.
physically yes you do. legally no you dont. have to get recertified to get it legal.

IIRC stock PY0 rims are lower than 3500#, that's why the 3500SRW had to go to steel wheels.

BTW the axle ratings also are the braking capacity of the axle. so I wonder if our brakes are actually for 10,900# or the 6900 +/- GM rates them for?

hope it's 10,900 :confuzeld

IIRC stock PY0 rims are lower than 3500#, that's why the 3500SRW had to go to steel wheels.

BTW the axle ratings also are the braking capacity of the axle. so I wonder if our brakes are actually for 10,900# or the 6900 +/- GM rates them for?

Thanks Tim...I think...

Does anyone know for sure what the stock rims are rated at?
I wish I'd have known this info before I got those 16's...

IIRC stock PY0 rims are lower than 3500#, that's why the 3500SRW had to go to steel wheels.

BTW the axle ratings also are the braking capacity of the axle. so I wonder if our brakes are actually for 10,900# or the 6900 +/- GM rates them for?
same brake system form 2500hd to 3500DRW..

i had my trailer brakes go out on me comeing from oregon to socal. my GCVW was 15,000 pounds runnign a TT (trailer 5k rear 6k front 4k).. i normally load front heavy on trailer thus to make more use of the rear axle trailer. panic stops with in reasonable distances were not a problem.;)

at first i was worried about it.. till i found out i could stop just as well empty with very little more peddel effort:). deff didnt like finding that out going down a 8% grade in oregon:mad:

13"x ~1.5" rotors all the way around.. if i was doing it on a regular bassis i woudl through some crossdrilled rotors to help with heat disipation;)