NHCelt
Well-known member
The truck; 2017 FORD SUPERDUTY SCLB Powerstroke, the configuration of which I selected based on published max. payload capabilities.
The published capacity for payload for the 164" bed f350 4x4 SRW is 4710 lbs
Yellow GVWR tire and weight sticker; payload capacity 3546
So, I know about the fifth wheel and gooseneck ratings, and there is no need to include those numbers here...I'm not close. Payload...close with my Bighorn 3270.
So my concern here is payload, and where the assigned GVWR really comes from....and is payload really a concern here or just a yellow sticker generated concern.
So let's look at that yellow sticker and GVWR.
Assuming the yellow sticker uses the assigned GVWR of 11,500 and actual truck weight (plus fuel) to determine cargo capacity, then I can determine the curb weight of my truck (plus fuel) as manufactured. Thus, my 11500 GVWR and stickered cargo capacity of 3546 gives me a truck that weighs 7954 lbs. (let's call it 8000) with fuel. So far, that sounds right. (My truck is new and I have not weighed it yet).
MY question is where does that GVWR come from?
Is it, as I suspect, an arbitrarily derived number that exists to satisfy registration, regulatory, roadtax and insurance requirements?
In my case, my front axle is rated at 5990, and my rear axle at 7230, for a combined rating of 13220.
My e rated tires are rated at 3640 per tire, 7280 per axle and 14,560 total.
Since my truck is new and not yet weighed, I'll use an educated guess that the front axle is carrying 5000 lbs from the factory with my Powerstroke and Supercab long bed. That puts (conservatively) about 3000 lbs on the rear axle, leaving excess axle capacity in the area at about 4200 lbs, and surplus tire capacity at slightly more than that. I would suspect that the Lariat trim group options make up most of the difference between that and the published 4700 lbs...and I'm ok with that.
So, those numbers are generally in line with the published payload capacity of 4700 for my truck.
Now, remember...my truck yellow sticker tells me not to exceed 3546 lbs. of cargo. There is about a 700 lb difference between actual engineered component ratings and yellow sticker ratings. That's a huge difference when you start looking at your actual loads. Where did it go?
The axle ratings and tire ratings are engineered values. The weight is the weight. The assigned GVWR is the only issue at play here.
So far, I don't see where the yellow sticker info comes from other than the arbitrarily assigned GVWR rating of the truck...which does not remotely reflect the axle or tire capacities.
Am I wrong here, but I do not see the yellow sticker payload capacity as reflective of actual component ratings.
So if I am over the yellow sticker rating but within the axle and tire ratings, why am I not ok? It seems to be more about administrative ratings than actual safety.
Where does this number come from? It isn't based upon axle or tire capacities....and frankly, those would be my two concerns.
The published capacity for payload for the 164" bed f350 4x4 SRW is 4710 lbs
Yellow GVWR tire and weight sticker; payload capacity 3546
So, I know about the fifth wheel and gooseneck ratings, and there is no need to include those numbers here...I'm not close. Payload...close with my Bighorn 3270.
So my concern here is payload, and where the assigned GVWR really comes from....and is payload really a concern here or just a yellow sticker generated concern.
So let's look at that yellow sticker and GVWR.
Assuming the yellow sticker uses the assigned GVWR of 11,500 and actual truck weight (plus fuel) to determine cargo capacity, then I can determine the curb weight of my truck (plus fuel) as manufactured. Thus, my 11500 GVWR and stickered cargo capacity of 3546 gives me a truck that weighs 7954 lbs. (let's call it 8000) with fuel. So far, that sounds right. (My truck is new and I have not weighed it yet).
MY question is where does that GVWR come from?
Is it, as I suspect, an arbitrarily derived number that exists to satisfy registration, regulatory, roadtax and insurance requirements?
In my case, my front axle is rated at 5990, and my rear axle at 7230, for a combined rating of 13220.
My e rated tires are rated at 3640 per tire, 7280 per axle and 14,560 total.
Since my truck is new and not yet weighed, I'll use an educated guess that the front axle is carrying 5000 lbs from the factory with my Powerstroke and Supercab long bed. That puts (conservatively) about 3000 lbs on the rear axle, leaving excess axle capacity in the area at about 4200 lbs, and surplus tire capacity at slightly more than that. I would suspect that the Lariat trim group options make up most of the difference between that and the published 4700 lbs...and I'm ok with that.
So, those numbers are generally in line with the published payload capacity of 4700 for my truck.
Now, remember...my truck yellow sticker tells me not to exceed 3546 lbs. of cargo. There is about a 700 lb difference between actual engineered component ratings and yellow sticker ratings. That's a huge difference when you start looking at your actual loads. Where did it go?
The axle ratings and tire ratings are engineered values. The weight is the weight. The assigned GVWR is the only issue at play here.
So far, I don't see where the yellow sticker info comes from other than the arbitrarily assigned GVWR rating of the truck...which does not remotely reflect the axle or tire capacities.
Am I wrong here, but I do not see the yellow sticker payload capacity as reflective of actual component ratings.
So if I am over the yellow sticker rating but within the axle and tire ratings, why am I not ok? It seems to be more about administrative ratings than actual safety.
Where does this number come from? It isn't based upon axle or tire capacities....and frankly, those would be my two concerns.
