New Rockwood 2507s Rocking

[dbsfgiants]

I have a new Rockwood 2507s that I am pulling with a 2019 Ram 1500 Classic.
Ram 1500 Payload: 1517 lb.
Ram 1500 Towing: 6900 lb.
Hitch Weight: 625 lb.
UVW 5471 lb.
CCC 1314 lb.
GVWR 6785 lb.
I have only put 600 lb. in the trailer max and not carrying any water in any of the tanks. I felt porpoising when we left the RV dealership but found out they left the fresh water tank 3/4 full. I removed the water but still feel rocking, especially if I hit a bump in the road. I doesn't feel right.
I brought the truck back to the dealer because it was bought used with 15,000 miles and still under warrantee. I had a difference between wheel wells in back by almost 1 3/8", lower on the driver side. The tech noticed the difference and could tell something was wrong. They replaced rear springs and shocks. I can still see the driver side lower but not a bad as it was. Dealer says all measurements are within range so there is nothing they can do.
The rear sway bar does not look level to each other on the sides but I am not sure if that is the issue or rather the result. Dealer says it is fine. I know that people replace with heavier sway bars but I don't know if it is causing the rocking.
My Goodyear tires on the trailer say 65# max pressure and I have them just at 60# or a little over. Should they be at the 65# at cold pressure or is this a reason I feel the rocking?
I am about to add air lifts to the rear of the truck but I don't know if I am throwing away money.
Any help or ideas appreciated.

[Chris Pastuzyn]

Welcome from New Jersey, Any chance of getting to the scales ?

[lbrjet]

You should put 65 in the tires. Can't help with the rest. Have you pulled a travel trailer before?

[dbsfgiants]

Originally Posted by Chris Pastuzyn

Welcome from New Jersey, Any chance of getting to the scales ?

I'm going to do that next. I was thinking of going back to RVOne Tampa where I purchased the trailer and have them look at it. They installed the hitch and sway bar.

[dbsfgiants]

Originally Posted by lbrjet

You should put 65 in the tires. Can't help with the rest. Have you pulled a travel trailer before?

I have pulled only boats, 16' max length. My wife grew up with RV's and she keeps saying it shouldn't be doing what it is doing. The 2507s has the Murphy bed in front and as of now I haven't put anything in the storage under the bed. Most of what we have added is under the U-shape dinette, which is over the double axel, and the closet next to it. I'm wondering if I need to add more to the tongue.

[Chris Pastuzyn]

Yes if you have more weight towards the rear that would definitely effect the truck

[bikendan]

Originally Posted by dbsfgiants

I'm going to do that next. I was thinking of going back to RVOne Tampa where I purchased the trailer and have them look at it. They installed the hitch and sway bar.

You should learn how to adjust your WDH yourself. Many dealers will not set it up correctly.
Personally I'm not a fan of the old tech WDHs with chains and add-on friction anti sway bar. But you should be able to find many Husky setup videos online.

[IvoryHemi]

What is your rear GAWR capacity? You’re pretty close to max tongue weight with just an empty trailer based on dry manufacturer specs.

As suggested, I would hit a CAT scale to get some weight measurements to find your actual tongue weight, GVWR and rear GAWR

Dry Weight 5,305 lbs
Payload Capacity 1,539 lbs
Hitch Weight 684 lbs.

[SoCal49r]

2017 Rockwood U/L 2703 WS 6900#

TV 2013 Chevy 1500 payload 1442
I have the same WDH and hook to the 4th link. Carry 1/3 tank water for emergencies and I try to stay off the "Truck" lanes as much as possible.
TT tires 65# TV tires LT 40# max pressure 44#

[Tundra 2014]

What you described sounds like you need more weight on the hitch. I would move some of the load inside the trailer towards the front. Pack like you were going camping and then drive to a CAT scale to get weights. Look at your TV rear axel load caps VS actual weights. Also if you have passenger tires on the rear of your TV it can cause some of this. I never had a good experience w/ the friction bar WHD, but that would be more on sway problems. I think the RV dealers are not always the best at setting the WDH. Also consider you have added 10% additional weight to the beginning trailer weigh VS what they set it with. I do not know if it would apply to your year of Dodge, but had good results adding Timbren bump stops to my Tundra when I had it. No effect in normal driving, but firmed up TT travel.

[boogiejack75]

Originally Posted by dbsfgiants

I have a new Rockwood 2507s that I am pulling with a 2019 Ram 1500 Classic.
Ram 1500 Payload: 1517 lb.
Ram 1500 Towing: 6900 lb.
Hitch Weight: 625 lb.
UVW 5471 lb.
CCC 1314 lb.
GVWR 6785 lb.
I have only put 600 lb. in the trailer max and not carrying any water in any of the tanks. I felt porpoising when we left the RV dealership but found out they left the fresh water tank 3/4 full. I removed the water but still feel rocking, especially if I hit a bump in the road. I doesn't feel right.
I brought the truck back to the dealer because it was bought used with 15,000 miles and still under warrantee. I had a difference between wheel wells in back by almost 1 3/8", lower on the driver side. The tech noticed the difference and could tell something was wrong. They replaced rear springs and shocks. I can still see the driver side lower but not a bad as it was. Dealer says all measurements are within range so there is nothing they can do.
The rear sway bar does not look level to each other on the sides but I am not sure if that is the issue or rather the result. Dealer says it is fine. I know that people replace with heavier sway bars but I don't know if it is causing the rocking.
My Goodyear tires on the trailer say 65# max pressure and I have them just at 60# or a little over. Should they be at the 65# at cold pressure or is this a reason I feel the rocking?
I am about to add air lifts to the rear of the truck but I don't know if I am throwing away money.
Any help or ideas appreciated.

13% of 6875 lbs GVWR = 882 lb theoretical tongue weight. So somewhere between that and the dry hitch weight of 625 lbs should be what you need. 750 or so ? Need actual weights from the CAT scales to be sure what you are working with. The RAMs are coil rear springs, which are not as stiff as a leaf spring setup, so that doesnt help. Could be the shocks. OEM shocks are notorious for wearing out quickly. Use the WDH to get your truck back as level as possible after hitching. YouTube can help you with this procedure. Good luck and have fun!!

[Reverse_snowbird]

Any chance you could post a picture of the entire rig (truck and trailer) from the side on a level surface?
As lbrjet asked... Is this your first experience towing an rv? What do you mean by 'rocking'? A lot depends on the type of road and your speed.
Definitely do the weight thing.

[dbsfgiants]

Here is from today after hooking up. Level from what I can tell. The sway bar under rear axel is level. The difference I mentioned is when the truck is not attached. I'm getting a shell for the bed tomorrow and will be adding air shocks next week.

[IvoryHemi]

Originally Posted by dbsfgiants

Here is from today after hooking up. Level from what I can tell. The sway bar under rear axel is level.

Best way to determine is measure the fender gap of your front tires. First measure without the trailer hooked up, then with it. That’ll tell you how much the WDH is leveling it out

[bikendan]

Originally Posted by dbsfgiants

Here is from today after hooking up. Level from what I can tell. The sway bar under rear axel is level. The difference I mentioned is when the truck is not attached. I'm getting a shell for the bed tomorrow and will be adding air shocks next week.

Looks like your truck has rear sag. Adding a shell on the bed is going to make it worse. Air bags only help on the sag but won't help if you're over payload or the GAWR.

[Mch5jdm]

I think you should make sure your WDH is correct. I had to change mine a few times before getting it tuned in on my 2020 Ram. The tape measure was my best friend as was the local high school parking lot as it was a flat level surface.