Beef Up Rear End F25 Diesel for Towing
- #1
So I bought a toy hauler: 
it weighs 7000 dry. So I figure about 2000 more with toys and fluids,etc. I had a weight distribution hitch with sway bar installed and was talking to the guy doing the install. he said the weight is not a problem but the weight on the suspension is a little more than he would like to see. He said its the suspension u need to watch. He said if I add some air bags it would help a lot and I should be fine. I was told there are other options also. Looking for suggestions.i really don't want to put air in bags every time I tow. Is that how they work or can you leave air in them. Here is one that I saw :
2014 Dodge Ram Pickup Suspension Enhancement | etrailer.com
I don't care about money if it will save wear and tear on the truck. I would like to keep it for 10 years. I will only use the thauler a few times a year and don't pull anything else right now. I wanted comfort and luxury over a 2500 
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- #3
I have the timbrens AND air bags. I bought the timbrens first. Then bought the bags. Had I got bags first I would have saved the 200$ on the timbrens. The bags go in your coils. You run a line out so you can add air. Inflate when in use, deflate when not. Keep at least 5 psi. You wont know they are in there at that pressure. Airlift 1000. They are about 90$. I found an Advanced Auto coupon on line and saved a little. More will chime in today on how they like the bags
- #4
I took it for 100 mile ride the other day(empty) and you can tell its back there but the truck will pull it. The worst thing was a little dolphin motion over some bad roads which I heard the bags would take care of. The wd hitch makes everything good. I was actually surprised to see the mileage was 11-12mpg doing 60-65 for a good hour and a half. The trans. temp. never went over 178 on my 8 speed. Kept it in tow mode. Brakes were set to 8.5. I have almost 5000 miles on it. We are going to ohio next week from ny so I would like to get it done before then but if I don't Ill manage. What is involved in installing the bags. I don't know anything about suspensions except that they sag if you put too much weight on it Thanks
- #6
You may be underestimating the weight of that trailer once loaded up- I might be wrong though. That aside, check the sizing on the bars installed? At 13% tongue weight of 9000lbs- 1170lbs on the tongue, just for figures. Are the bars at least 1200lbs bars? Personally- I'd err on the side of caution and use larger than 1200lbs since loading habits and circumstances change and directly affect tongue weights.
That is a pile of weight on the receiver- so airbags or replacement coils are in order, and definitely look into some shocks to help a bit with the porpoising. Like mentioned above- level or a tad nose down, not nose high. With a trailer that size, I would really be babysitting my axle weights- keep it under control. I know the TH usually have a really heavy dry tongue weight with a rear garage, but typically they average out to 13% or so loaded I believe.
So, my route would be: bags or coils, shocks, tires and make sure you have the correct size bars- sway control is a bonus too. I used the TTC1223 replacement coils- hindsight I would have used the TTC1223v which are a bit lighter, and guys rave about the bags- don't think you'd go wrong with either. I chose the coils because there is really nothing that could go wrong with them- leaking etc.
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- #7
Coils / Solid replacements > Bags IMO.
I wouldn't want to be out in the middle of no where, crack a bag and be up sh*ts creek.
That or get coil spring REPLACEMENT air bags, so you're full rear air ride.
That'd be a trick solution too.
- #9
I will be the naysayer - if you are riding on bump stops, without bags or with faulty bags you are way over your pay load capacity. The payload on a 1500 maxes out around 1500lbs depending on actual scale weights - bags and WD hitches don't change that - if your tongue weight is 1200 lbs that leaves you 2-300 lbs left for occupants/cargo in the truck.
- #10
1680 actually was the best on the 2014's I saw, but maybe you can get more with less. The more options you have, the less payload you end up with. Got a Big Horn with Crew Cab, 4WD, Rambox, leather, sunroof and 5.5 bed? Look at your door sticker and be disappointed. 
Source: https://www.ramforum.com/threads/want-to-beef-up-suspension-on-1500.51620/
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