Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

davidaf · 02-13-2015, 09:14 PM

Here's what I do, if I'm wrong I'd love to know because I've been doing it this way for years. I always estimate using max trailer weight and aim to stay below that in real life.

First I don't think the 23000 GCWR is correct for your truck, I believe you have the 4.10 rear end which puts you at 21000 (http://www.fleet.ford.com/resources/...TTgdeSep08.pdf) but if it is 23000, the number you are missing is your truck curb weight loaded. Your truck base curb weight is approx 6900 (from the ford website https://www.fleet.ford.com/truckbbas...0-450_08bb.pdf which can only be verified by a CAT scale) with the weight of hitch, passengers and whatever else is in the truck which will probably put you at roughly 7400lbs give or take. The only way to know for sure is weight the truck at a CAT Scale. Once you know the actual curb weight subtract curb weight from both GCWR and GVWR to determine how much trailer you can haul.

With the estimate above and your numbers from the original post.
GCWR:
23000 - 7400 = 15600 for max total trailer weight
GVWR:
11000 - 7400 = 3600 for max pin weight

Again you should verify your actual curb weight to determine actual carrying capacities but given the estimated numbers you'd be just under your GCVWR and GVWR if 23k GCWR is correct and if you don't overload your trailer where pin weight is estimated at 20% of fully loaded trailer to max GCWR (please check my math it is 1am lol):

GCWR - CurbWeight - TotalTrailerWeight = Spare Capacity
23000-7400-(11130+3165) = 1305lb
GVWR - CurbWeight - PinWeight = Spare Capacity
11000-7400-((11350+3165)*.20) = 697lb spare capacity

Again, a CAT scale reading of the truck with passengers/hitch/gear will go a long way. Pin weight is usually the biggest challenge with a SRW. Until you load the trailer and pull it to the CAT scale you wont know for sure but this should give you an idea how to work the numbers.

02-13-2015, 09:14 PM	#7
davidaf Montana Master Join Date: Jul 2013 Location: Aguanga Posts: 606 M.O.C. #13601	Here's what I do, if I'm wrong I'd love to know because I've been doing it this way for years. I always estimate using max trailer weight and aim to stay below that in real life. First I don't think the 23000 GCWR is correct for your truck, I believe you have the 4.10 rear end which puts you at 21000 (http://www.fleet.ford.com/resources/...TTgdeSep08.pdf) but if it is 23000, the number you are missing is your truck curb weight loaded. Your truck base curb weight is approx 6900 (from the ford website https://www.fleet.ford.com/truckbbas...0-450_08bb.pdf which can only be verified by a CAT scale) with the weight of hitch, passengers and whatever else is in the truck which will probably put you at roughly 7400lbs give or take. The only way to know for sure is weight the truck at a CAT Scale. Once you know the actual curb weight subtract curb weight from both GCWR and GVWR to determine how much trailer you can haul. With the estimate above and your numbers from the original post. GCWR: 23000 - 7400 = 15600 for max total trailer weight GVWR: 11000 - 7400 = 3600 for max pin weight Again you should verify your actual curb weight to determine actual carrying capacities but given the estimated numbers you'd be just under your GCVWR and GVWR if 23k GCWR is correct and if you don't overload your trailer where pin weight is estimated at 20% of fully loaded trailer to max GCWR (please check my math it is 1am lol): GCWR - CurbWeight - TotalTrailerWeight = Spare Capacity 23000-7400-(11130+3165) = 1305lb GVWR - CurbWeight - PinWeight = Spare Capacity 11000-7400-((11350+3165)*.20) = 697lb spare capacity Again, a CAT scale reading of the truck with passengers/hitch/gear will go a long way. Pin weight is usually the biggest challenge with a SRW. Until you load the trailer and pull it to the CAT scale you wont know for sure but this should give you an idea how to work the numbers.