There's your answer. If your numbers are correct, 9200 - 6k = 3200lbs.
If your load is 1800lbs/yard, 1.5 yards is 2700lbs. That will put you at 8700 lbs.

 

I'm a little bit confused at what weight rating is being asked for at this point? The registered license weight is on the registration paper that should be in your glove box, in Iowa my truck is actually only licensed for 4ton's so I normally would only have 500lbs of payload but as long as it is farm related my truck is somewhat exempted from that restriction. Again in Iowa I could register my truck for up to 18ton's and as long as I didn't have an axel overloaded they would never look at the door sticker. To the best of my research in Iowa they don't seem to care about the trucks rating but more about how it's licensed/axle weight.

 

Your registration and title will have a registered WEIGHT on it. You can NOT exceed that. Most landscape yards make you bring in your registration when you get loaded

 

Spring capacity is one thing, but I'd be concerned about rear wheel bearings in overload situations.

 

Personally I wouldn't be to worried about putting 1800lbs in the back of a 1 ton. I can legally put 2,600 in the back of my SRW 3/4 ton, which I have done several times with no trouble at all.

As long as your total weight is under the 9200gvwr that you posted, and your truck is in pretty good shape, then I think you'll be fine.

 

with all government restrictions aside,
my 1971 F250 CS weighs in at 4200 lbs.
i pulled into the scales with a bed of busted up concrete @ 9780.
it was a sketchy 5 mile drive at well below the speed limit.

the only thing that really bugged me were my tires.

with that being said, your tires are going to be the fail point with an overweight load.

 

Around here no one checks truck weight ratings before loading pickups. You just go get whatever you need and they load you up. We are very agricultural based and trucks get loaded to the gills all the time.

I wouldn't have any concerns about the truck handling 1.5 yards of soil. Legally no clue, but mechanically I wouldn't be worried. I'm assuming you run load range E tires. and only reason I ask about tires is the Load range E's seem to handle better with a load.

 

Not sure if I would worry about the bearings in this situation. The F350 is a full floating axle design so from the way I understand the weight is actually on the axle tubes, with minimal weight on the actual bearings. When you add in the amount of weight that the truck can haul, in this case the 2700 lbs, is well within the range. However, with this being said, then you are looking at the tires and their weight capacity. If there are not enough plies in the tires, they can flatten, and that flattening causes extra heat build up in the tires which can lead to failure. However, if you see your tires squatting or flattening, depending on the tire plies, you can add more air pressure which will compensate for the flattening of the tires.

 

Ok so I checked out the registration card. My unladen weight is 5185lbs! That's insanely low. And I'm running Hankook Dynapro ATM RF10's, 285/75r/16. I think those might be my Achilles heel. They are rated as having a 3k single load rating but are only 6ply tires.

 

Wheel bearings ALWAYS carry all of the load, regardless of what design they are. But full-floating bearings are the biggest bearings, and are best at carrying weight (which is why heavier trucks always have them).

The actual number of plies means so little these days that it's usually pretty difficult to find out what you have. The important thing is the load range rating. If you have load range C tires, then yes, you have half-ton truck tires and they are your limiting factor. But if they are load range E (or probably even D) they should handle the load you're talking about fine.

As far as the registration weight goes, unladen weight on the card doesn't matter. It's the maximum weight that matters. It's a question of how much weight you are paying taxes for. Heavier trucks cause more damage so they pay higher taxes. The total weight can't exceed the rating of the truck, the rating of the tires, or the amount you are paying taxes for, whichever is less.

 

I just meant crazy because I thought my truck would weigh at least 6k.

 

Maybe in YOUR state.

 

Yeah, I had an '85 F-250 RCLB with a 351 that weighed a little over 5K empty. My '97 F-250 CCSB with a 460 weighs about 6,600. 5,185 for an F-350 CCLB doesn't seem realistic. But my point was that it doesn't matter what that number on your registration says. If you put 4K on it and say you're under the 9,200 lb rating because 5,185 and 4000 is less than 9,200, it won't matter. They'll weigh the total and find you're really over 10K (because the empty weight is actually over 6K) and you're overweight in spite of the registered 5,185 lb empty weight.

 

And it DOES. Just because the registration SAYS it only weighs 5185 does NOT mean that is what it weighs. Your truck weighs closer to 6500lbs like I said

 

Your state has no weight on the title to registration? What state do you live in?