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Old 02-14-2016, 09:37 AM   #1
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Pin weight vs payload

I have a 2012 Ram 2500 truck with gas engine. According to their website with my 3.73 Axle ratio I can tow a max trailer weight of 10,500 with a payload of 2460. I could change my axle ratio to 4.1 and increase my towing capacity to 13,500 but payload stays the same. I am going to be buying a living quarters horse trailer and want to make sure I don't buy more trailer than I can pull. Everything I read just makes me more confused. What is the most I should tow with the 2460 payload? Does it make sense to spend the money to get the 4.1 Axle ratio? How do I determine pin weight on a trailer?
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Old 02-14-2016, 09:44 AM   #2
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Pin weight (hitch weight) must be subtracted from payload. Payload includes one driver, anything in truck and bed, full fuel, and hitch (or pin) weight. Hauling the 4-leggeds, and your house, I'd look at a 1 ton.
Good luck!
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Old 02-14-2016, 10:03 AM   #3
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Welcome to iRV2.

You have to reduce the amount of payload available for a trailer pin, by the weight of all items in the truck . Passengers and hitch , tools and all items carried in the box and cab.
Fifth wheel and goose neck trailers, typically place 15>20% of their weight on the truck, so a 10,000 lb. trailer can place 1,500>2,000 lbs. on the truck.
Payload of the truck is determined and limited by the springs, tires , strength of the frame, and other factors.
The trailer tow capacity, is increased with the gears, because the higher number ratio, reduces the load on the transmission/engine.
JMHO: any trailer that weighs, over 10,000 lbs. will be too much for your truck.
BTW: My last 5 er was 10,000 lbs. towed with a 2000, Dodge 4X4, V-10 with 4:10 gears, 14,000 trailer tow rating, and 2,800 lbs payload. The 10,000 lbs 5.er was as large as I felt comfortable with, and the rear axle weight was within 250 lbs of it's maximum.
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Old 02-14-2016, 01:25 PM   #4
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Payload is everything that a truck can carry when it is in it's basic form (without some options) + all of the options needed to increase it's capacity (heavier tires, trailer towing option, etc).

Towing capacity is the same as above (truck in basic form with only options added to increase towing). If you add 4x4 you decrease the towing.

GCVW is the total amount the truck and trailer can weigh without overloading an axle.
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Old 02-14-2016, 09:25 PM   #5
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The 4.10 will allow the truck to pull more weight but won't allow the truck to carry more weight.

The 2500 Ram has a 6000-6200 RAWR which carries all the hitch weigh which on a LEQ horse trailer may be as much as 25-30 percent of the trailers gross weight. Generally these trailers axles are set farther aft placing more weight on the trucks rear axle. Some LEQ dealers will recommend only 3500/4500 trucks for their larger units.

Trucks tow ratings are for all types of trailers.
Example is my 16k 36' GN tri axle stock trailer. I can panel off young stuff between the hitch and the trailers axles and load heavy bulls and cows over/behind the trailers axles and come up with low hitch loads for my 2500 Dodge truck. Same with flatdeck trailers.
A 250/2500 truck has 6000-6200 RAWR which includes the main spring pack/wheels and tires and is good for around 3000 lb loads.

Our 350/3500 SRW trucks have a 7000-7050 RAWR which means 3500-4000 lb loads.

The 350/3500 DRW can have 9200-9850 RAWR depending on year models with payloads in the 6k-7k range.
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Old 02-15-2016, 06:33 AM   #6
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Thank you for all the advice and info. I am going to call the manufacturer of the trailer I am interested in and find out what the empty pin weight is. That will give me a good idea on if I could pull it loaded.
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Old 02-15-2016, 07:17 AM   #7
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Quote:
Originally Posted by Travl View Post
Thank you for all the advice and info. I am going to call the manufacturer of the trailer I am interested in and find out what the empty pin weight is. That will give me a good idea on if I could pull it loaded.
Empty pin weight is almost always listed in the brochures. No need to call anyone for useless information. Look on the left front side for the data plate. That will give you the trailers GVWR, 20% of which will be a good starting point for pin weight.
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Old 02-15-2016, 07:35 AM   #8
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Originally Posted by 450Donn View Post
Empty pin weight is almost always listed in the brochures. No need to call anyone for useless information. Look on the left front side for the data plate. That will give you the trailers GVWR, 20% of which will be a good starting point for pin weight.
Good advice here. I don't know about horse trailers, but my fiver is about 3-400 lbs over the dry pin weight when loaded. I assume living quarters are at the front so at least the weight of the horses is on the axles.
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