Another weight question....
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Laughing Gas
Joined: Jul 2010
Posts: 859
Likes: 10
From: North Carolina
Another weight question....
Here’s one for you weight rating savvy types...
My GVWR is 9600#, My max towing is 12,400 (22,000).
Why would Ford make my GCVWR 19,000? It seems to me that this number should be the sum of GVWR and max towing, what am I missing here?
Thanks for the reply’s, just trying to learn something...
My GVWR is 9600#, My max towing is 12,400 (22,000).
Why would Ford make my GCVWR 19,000? It seems to me that this number should be the sum of GVWR and max towing, what am I missing here?
Thanks for the reply’s, just trying to learn something...
Hotshot
Joined: Jan 2010
Posts: 10,060
Likes: 491
From: Bristol, TN.
Any time you get into a discussion of weights the conversation can get convoluted fast.
What is called your GCWR or gross combined weight rating is the total weight your truck is capable of moving, down the road according to the manufacturer. You can never move more than that safely according to the manufacturer. It doesn't change with modifications.
Your GVWR or gross vehicle weight rating is how much your truck is capable of moving and stopping as it goes down the road, with nothing attached. It never changes according to the manufacturer. What is stamped on it is what it is. And a decrease in your GVWR can never be calculated as an increase in towing capacity for a trailer, just as a lightly loaded trailer does not increase the GVWR.
Finally your tow capacity is just that, what your truck is capable of pulling down the road. But, not with your truck fully loaded.
You can fully load your truck or your trailer, but not both and stay within the manufacturer's specs.
Since the ratings are intended for different purposes and do not need to add up. Here is why. The ratings are component dependent and are tied to the weakest component in a given rating for an intended purpose. A component that reaches maximum stress under a load hauled in the truck, may not reach the same load when towing and vice versa. You can also have ratings for other components such as axles that do not add up to other ratings because the Gross Max ratings may be reflecting something other than the axles alone, but a component that works in combination with the axles.
The way the engineers that design this stuff explained it to me was it was essential to focus on what components come into play in a particular application, hauling versus towing for example. All the ratings are actual separate measures.
Whether you buy it or not is your call. Some folks do, so folks do not. In some applications the limiting factor is a component in the transmission, in some it is a leaf in the spring. The ratings are not as transparent as people assume and ferreting out the what-ifs can get foggy quickly.
Hope the helps,
Steve
What is called your GCWR or gross combined weight rating is the total weight your truck is capable of moving, down the road according to the manufacturer. You can never move more than that safely according to the manufacturer. It doesn't change with modifications.
Your GVWR or gross vehicle weight rating is how much your truck is capable of moving and stopping as it goes down the road, with nothing attached. It never changes according to the manufacturer. What is stamped on it is what it is. And a decrease in your GVWR can never be calculated as an increase in towing capacity for a trailer, just as a lightly loaded trailer does not increase the GVWR.
Finally your tow capacity is just that, what your truck is capable of pulling down the road. But, not with your truck fully loaded.
You can fully load your truck or your trailer, but not both and stay within the manufacturer's specs.
Since the ratings are intended for different purposes and do not need to add up. Here is why. The ratings are component dependent and are tied to the weakest component in a given rating for an intended purpose. A component that reaches maximum stress under a load hauled in the truck, may not reach the same load when towing and vice versa. You can also have ratings for other components such as axles that do not add up to other ratings because the Gross Max ratings may be reflecting something other than the axles alone, but a component that works in combination with the axles.
The way the engineers that design this stuff explained it to me was it was essential to focus on what components come into play in a particular application, hauling versus towing for example. All the ratings are actual separate measures.
Whether you buy it or not is your call. Some folks do, so folks do not. In some applications the limiting factor is a component in the transmission, in some it is a leaf in the spring. The ratings are not as transparent as people assume and ferreting out the what-ifs can get foggy quickly.
Hope the helps,
Steve
Thread Starter
|
Laughing Gas
Joined: Jul 2010
Posts: 859
Likes: 10
From: North Carolina
Any time you get into a discussion of weights the conversation can get convoluted fast.
What is called your GCWR or gross combined weight rating is the total weight your truck is capable of moving, down the road according to the manufacturer. You can never move more than that safely according to the manufacturer. It doesn't change with modifications.
Your GVWR or gross vehicle weight rating is how much your truck is capable of moving and stopping as it goes down the road, with nothing attached. It never changes according to the manufacturer. What is stamped on it is what it is. And a decrease in your GVWR can never be calculated as an increase in towing capacity for a trailer, just as a lightly loaded trailer does not increase the GVWR.
Finally your tow capacity is just that, what your truck is capable of pulling down the road. But, not with your truck fully loaded.
You can fully load your truck or your trailer, but not both and stay within the manufacturer's specs.
Since the ratings are intended for different purposes and do not need to add up. Here is why. The ratings are component dependent and are tied to the weakest component in a given rating for an intended purpose. A component that reaches maximum stress under a load hauled in the truck, may not reach the same load when towing and vice versa. You can also have ratings for other components such as axles that do not add up to other ratings because the Gross Max ratings may be reflecting something other than the axles alone, but a component that works in combination with the axles.
The way the engineers that design this stuff explained it to me was it was essential to focus on what components come into play in a particular application, hauling versus towing for example. All the ratings are actual separate measures.
Whether you buy it or not is your call. Some folks do, so folks do not. In some applications the limiting factor is a component in the transmission, in some it is a leaf in the spring. The ratings are not as transparent as people assume and ferreting out the what-ifs can get foggy quickly.
Hope the helps,
Steve
What is called your GCWR or gross combined weight rating is the total weight your truck is capable of moving, down the road according to the manufacturer. You can never move more than that safely according to the manufacturer. It doesn't change with modifications.
Your GVWR or gross vehicle weight rating is how much your truck is capable of moving and stopping as it goes down the road, with nothing attached. It never changes according to the manufacturer. What is stamped on it is what it is. And a decrease in your GVWR can never be calculated as an increase in towing capacity for a trailer, just as a lightly loaded trailer does not increase the GVWR.
Finally your tow capacity is just that, what your truck is capable of pulling down the road. But, not with your truck fully loaded.
You can fully load your truck or your trailer, but not both and stay within the manufacturer's specs.
Since the ratings are intended for different purposes and do not need to add up. Here is why. The ratings are component dependent and are tied to the weakest component in a given rating for an intended purpose. A component that reaches maximum stress under a load hauled in the truck, may not reach the same load when towing and vice versa. You can also have ratings for other components such as axles that do not add up to other ratings because the Gross Max ratings may be reflecting something other than the axles alone, but a component that works in combination with the axles.
The way the engineers that design this stuff explained it to me was it was essential to focus on what components come into play in a particular application, hauling versus towing for example. All the ratings are actual separate measures.
Whether you buy it or not is your call. Some folks do, so folks do not. In some applications the limiting factor is a component in the transmission, in some it is a leaf in the spring. The ratings are not as transparent as people assume and ferreting out the what-ifs can get foggy quickly.
Hope the helps,
Steve
Super Moderator
Joined: Aug 2008
Posts: 37,375
Likes: 1,860
From: Frederick, MD
That is about as good as it gets there.
Let me add that one would be wise to load your truck up with what you would have for towing (minus the trailer) and get it on the scales. I would advise a truck stop scale as that will give you drive and steer axle weights and then of course the total.
That the total minus your GVWR and whatever is left over is what additional payload you may add to the truck. Remember trailer weight (tongue wt) is payload for the truck.
Let me add that one would be wise to load your truck up with what you would have for towing (minus the trailer) and get it on the scales. I would advise a truck stop scale as that will give you drive and steer axle weights and then of course the total.
That the total minus your GVWR and whatever is left over is what additional payload you may add to the truck. Remember trailer weight (tongue wt) is payload for the truck.
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