CAT scale weight lower than door jamb sticker

[audibahn]

Took my 2022 Sport S Max Tow to the CAT scale and came in at 4740lbs. Bone stock, full tank, no driver. GWVR is 6250lbs which gives me 1510lbs of payload. Yellow sticker in door jamb states 1437lbs of cargo weight which is 73lbs lower than actual weigh-in. Not complaining as it should be in my favor but curious about the discrepancy.

Sponsored

 

[Jaxmax]

Pretty sure they figure the driver weight at 150 lbs in their calculation, so add that weight. My Mojave is GVWR 6140, with 1129 lbs. payload capacity, I forget the number but we went across one of my quarry scales and I was amazed at how much I weighed, I think around 5700 lbs. have a RSI Cap, Skid plates and other stuff, and I added 70 lbs. of winch on front bumper since then, but bed was empty I think. You have me wondering now, Quarry is only 30 minutes away, going to have to check...Jack

PS: I have lost a lot of weight myself going from a 38" waist at 235 to a very lose 34" waist at 206lbs. heading to the 195 -200lb. range so I can get a fully belly skid!, now that I have no belly myself! Haha!

 

[Snake Eyes]

Pretty sure they figure the driver weight at 150 lbs in their calculation, so add that weight. My Mojave is GVWR 6140, with 1129 lbs. payload capacity, I forget the number but we went across one of my quarry scales and I was amazed at how much I weighed, I think around 5700 lbs. have a RSI Cap, Skid plates and other stuff, and I added 70 lbs. of winch on front bumper since then, but bed was empty I think. You have me wondering now, Quarry is only 30 minutes away, going to have to check...Jack

PS: I have lost a lot of weight myself going from a 38" waist at 235 to a very lose 34" waist at 206lbs. heading to the 195 -200lb. range so I can get a fully belly skid!, now that I have no belly myself! Haha!

Driver weight is not included in curb weight. Curb weight is the weight of the vehicle including a full tank of fuel and all standard equipment. It does not include the weight of any passengers, cargo, or optional equipment. Curb weight is considered the closest weight to the actual weight of the vehicle.

So he weighed it correctly. 6250-what he got at the scale with full tank and NO driver.

 

[Jaxmax]

Correct, the 150 pound passenger has nothing to do with, curb or Payload, as is posted here and other places. It comes from the SAE J2807 standard for determining tow ratings of truck and trailers and that does include 300 lbs. of passenger weight and 70 pounds of WDH or hitch weight bunch of sites including Ram truck charts state it, so that is where people come up with 150Lb. passengers I guess.
Your comment about options I'm not sure about, there is a thread here where lots of people posted GVWR and also their payload capacity and payloads are all different along model lines, so perhaps options from factory like steel bumpers, aluminum wheels, Adaptive cruise control , the mopar factory installed rubber floor mats, really anything including perhaps factory bedlining spray is in curb weight, how else could we all have such differences in say Mojave , V-6 automatic trans vehicles. I added Mopar Performance rock rails to my Mojave afterwards and they are heavier then what came from factory that I took off, so that difference along with my winch, air compressor addtional skid plates ,RSI cap, GMRS radio, any rescue gear and all that is aftermarket addons and part of payload, then add all the passenger actual weight....I think!.

 

[chorky]

Correct, the 150 pound passenger has nothing to do with, curb or Payload, as is posted here and other places. It comes from the SAE J2807 standard for determining tow ratings of truck and trailers and that does include 300 lbs. of passenger weight and 70 pounds of WDH or hitch weight bunch of sites including Ram truck charts state it, so that is where people come up with 150Lb. passengers I guess.

So when did this change then, because not but 15 years ago did Ford in fact include a 150 pound person (along with a full tank of gas/diesel) in their calculations for payload. This was done so folks did not have to consider their own weight when loading vehicles. It was a topic of discussion several times among dealers, techs, master techs, train the trainers, and Ford engineers. Unless over time manufacturers removed this from calculations. I always thought it funny back then because not many people were at or under 150 pounds. I was, many years ago...... J2807 is the standard for setting tow weights or GCWR, which is different than GVW or payload.

 

[Lunentucker]

Wheel and tire options could easily account for that small amount of weight.
That's about as much as I care.

 

[Mr._Bill]

The weight of the driver is taken into account when making the payload calculations for the vehicle, but is not included in the weight of the vehicle shown on the door sticker. The payload number on the sticker is adjusted downward from the maximum possible (for that vehicle) based on all the options installed at the factory.

 

[audibahn]

Question remains why the number on the sticker is lower than the actual number based on the scale. I read somewhere that the sticker number is calculated based on base weight plus average of options added instead of weighing each individual truck at the factory. Maybe the CAT scale was off, but they are usually calibrated within 20lbs. I know we're talking a small amount of weight, but it does put the sticker accuracy in question.

 

[rharr]

if you are pinching pounds to make GVWR on the JT, you might have bought the wrong truck and need a bigger one..... just saying.

 

[Lunentucker]

Put more air in your tires and go back ?

 

[Wet Willys]

I read somewhere that the sticker number is calculated based on base weight plus average of options added instead of weighing each individual truck at the factory.

This may be your answer right here. I'm not sure if all trim levels get a unique door sticker, but I doubt it. The median of the weight difference between a base model no frills soft top sport model vs a loaded down Rubicon with a hard top is probably right around the difference you're seeing.

 

[audibahn]

Put more air in your tires and go back ?

It must be all the nitrogen they put in the tires...It is lighter than air after all.

 

[Snake Eyes]

Correct, the 150 pound passenger has nothing to do with, curb or Payload, as is posted here and other places. It comes from the SAE J2807 standard for determining tow ratings of truck and trailers and that does include 300 lbs. of passenger weight and 70 pounds of WDH or hitch weight bunch of sites including Ram truck charts state it, so that is where people come up with 150Lb. passengers I guess.
Your comment about options I'm not sure about, there is a thread here where lots of people posted GVWR and also their payload capacity and payloads are all different along model lines, so perhaps options from factory like steel bumpers, aluminum wheels, Adaptive cruise control , the mopar factory installed rubber floor mats, really anything including perhaps factory bedlining spray is in curb weight, how else could we all have such differences in say Mojave , V-6 automatic trans vehicles. I added Mopar Performance rock rails to my Mojave afterwards and they are heavier then what came from factory that I took off, so that difference along with my winch, air compressor addtional skid plates ,RSI cap, GMRS radio, any rescue gear and all that is aftermarket addons and part of payload, then add all the passenger actual weight....I think!.

Correct. On public documentation they give a GVWR and basic payload (ie 1600 pounds)for all trims. Then as each vehicle gets built the options they received are deducted from that initial bare bones stock vehicle payload that is the public published payload. Once all these options are added the payload decreases for that vehicle and the specific payload for that vehicle is put on the door sticker. That payload is then the maximum available for driver, passengers, cargo and any mods that the driver does later.

This is why is is SOOOOO important when you buy a truck off the lot to look at the door sticker. You can have two Rubi’s sitting on a lot or two F150s, etc and the payload on the sticker will NOT be the same.

 

[ShadowsPapa]

This may be your answer right here. I'm not sure if all trim levels get a unique door sticker, but I doubt it. The median of the weight difference between a base model no frills soft top sport model vs a loaded down Rubicon with a hard top is probably right around the difference you're seeing.

My 2022 had a very different number from my 2020 - same options save for Gorilla glass (several pounds lighter) and the full-time transfer case (probably offsets the windshield weight loss.
So they really should be almost the same weight. And yet...........

And yeah, for a while the Jeep site was saying they took account of a 150 pound driver.
Curb weight plus 150 pound driver minus GVWR is how it was coming out.

My take - why not just go by the bloody sticker number instead of trying to outguess, out-math or out-engineer engineers? Why is everyone getting hung up on "the numbers don't match" - just follow the sticker and be happy.
But over the last 2+ years multiple threads pop up with people trying to out-think the sticker and find cheats or "this isn't right".
It is what it is. Only some team at FCA knows the math behind it.

A couple of years ago people were comparing those numbers and found differences all over the charts. 5 Rubicons ended up with 5 different numbers. Same for Overland - I saw loaded Overlands with higher numbers than I had.

We're saying that my 2022 weighs 100 pounds more than my 2020 did even with only 2 real differences - a LIGHTER windshield and a slightly heavier transfer case - if it even is heavier.

LOL - Déjà vu all over again.

 

[Lunentucker]

It must be all the nitrogen they put in the tires...It is lighter than air after all.

Air is 78% Nitrogen. They may have seen you coming.

Sponsored