GVW / GVWR Ratings on trucks? Help me understand this.

Could be as simple as it's sold that way to reduce title fees and the like.

 

That doesn't sound right. I think they made a mistake somewhere.

I never heard of a single axle able to pull 80,000 pounds. I thought 80,000 pounds is only for a twin-screw tractor and a tandem trailer.

When I pulled doubles with a single axle I believe it was 65,000 GVW.

 

The most I could see being pulled is 20 on the rears provided they're built for that and 13 on the steers.

33 provided it's built for that. For the truck only. Right or wrong?

Add the trailer and most of the weight would have to be on the back provided it's more then 1 axle.

 

If a single screw/dead axle "tandem" can gross 80k, why couldn't a single screw pulling doubles?

As for the OP's question, I didn't click all of the links, but I'd imagine it has to do with the truck specs. Heavier built axles can handle pulling heavier loads. More power under the hood will pull heavier loads. Different transmissions will make a difference, too. Even axle gearing will make a difference, as will the type and size of the brakes. Commercial trucks aren't like pickups, where pretty much every single one is nearly identically spec'd, with limited options. There are hundreds (if not thousands) of potential variations to choose from within any given make/model that will determine what sort of GVWR it will be assigned.

 

I need to update my response.

GVW is probably 32,000 to 35,000 something like that.

GCWR for a single axle I think is 65,000.

 

@MACK E-6 .....

single screw tractor with double pups and single axle dolly....5 axle total. Is that combination good for 80,000 lbs.

 

Think Cali. I have no idea WHY. But they only pull single axle double bellies.

Is there a weight advantage somehow to actually having a tandem truck and one belly with tandems?

 

I am very cautious with single screw trucks. They don't do well at the weights I use to run at.

I mentally evaluated all of my trucks in my life and that white 58-59 was the only single screw I ever drove. (International 10 ton single dump with axle splitter to go with the high direct and low 13 is the exception.) So.. with that in mind I'll exit stage right.