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Old 09-15-2014, 07:55 PM   #1
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On the bump stops

Not sure how much of a problem this is or if it is even a problem. Anyway, last week when we got all loaded up to go out for a few days I've noticed that I didn't have much suspension travel at the rear of the tow vehicle. For example, when I stepped on the bumper to get in the truck bed, there was little suspension movement. I'm towing a Rockwood MiniLite 2304 with a Ram 1500 2wd. The tongue weight, as measured on a CAT scale is right around 780 Lbs and the trailer grosses at 4750 Lbs on the same scale. All well with in the limits of the truck and the trailer.
Now for the gist of this discussion. When I looked under the truck to see if I had binding or an obstruction around the axle, I discovered that there was about 1/2 inch clearance between the bump stop and the rubber bump pad. The coil springs looked to be near max compression. Being a bit concerned, I disconnected the trailer and did the measurement routine and after reconnecting found the wd hitch had put the front suspension to with in 1/16 inch of the trailer off/ disconnected measurement which is what I expected. But the rear had a squat of 1 7/8 inch (the squat was the same for both sides).
I can't remember when I set up the hitch three years ago whether I even checked the rear suspension measurement. Now I know the coil spring suspension is softer than the old leaf springs, but this is disconcerting. I'm right in the middle of the tow rating of the truck (8700 Lbs), with in the rating of the hitch (Curt with 1000 Lb bars) and just under the max pay load of the truck (about 1600 Lbs). So, because I can't add a spring like in the old days. Do I have to install a set of air bags? Will I run into any problems if I don't? I haven't had any problems on the road as far as bottoming out etc, but I also haven't been on any "bad/rough" roads either. So no reason to "exercise" the suspension.
I talked with the dealers, both truck and trailer, and neither had any idea what to do because they never ran into this "problem" before. I'd be interested in what thoughts come from the more experienced members.
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Old 09-15-2014, 08:19 PM   #2
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If you don't want to do airbags you could try timbrens. They are much cheaper than airbags. My understanding is timbrens cushion the bump stops a bit and don't affect your ride when not pushing on the bump stops ie unhitched. Airbags typically require at least a little air in them at all times and will require adding air before trips and removing air after trips. Timbrens are install and pretty much forget. We are currently considering them for our truck.
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Old 09-15-2014, 08:26 PM   #3
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I have the Timbrens on my 13 1500.Made all the difference in the sag.Ram 1500 are built soft so the ride is better.Timbrens don't affect the ride at all.Unloaded they don't touch.Loaded they set down and hold the truck where it should be.Air your tires up to max and enjoy your drive.
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Old 09-15-2014, 08:32 PM   #4
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I have the AirLift bags and an on board compressor. I like that I get to control the ride by adjusting the amount of air. Pulled a tt for 50,000 miles with them and now a 5er over 20,000 miles. Like someone said, inflate truck tires to max and if you have P tires, suggest switching to LT.
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Old 09-16-2014, 07:39 AM   #5
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Airbags. Timbrens don't begin to work until you're near the bump stops, so your front end is already pointing skyward... Timbrens won't do anything to rectify that, airbags will.
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Old 09-16-2014, 08:28 AM   #6
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Quote:
Originally Posted by OldCoot View Post
I have the AirLift bags and an on board compressor. I like that I get to control the ride by adjusting the amount of air. Pulled a tt for 50,000 miles with them and now a 5er over 20,000 miles. Like someone said, inflate truck tires to max and if you have P tires, suggest switching to LT.
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Air bags all the way.
Quote:
Originally Posted by BigBaron View Post
Airbags. Timbrens don't begin to work until you're near the bump stops, so your front end is already pointing skyward... Timbrens won't do anything to rectify that, airbags will.

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Old 09-16-2014, 08:48 AM   #7
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I used air shocks on an f150/5th wheel combo. It was cheap and easy and worked well.
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Old 09-16-2014, 07:18 PM   #8
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re: on the bump stops

After reading the comments and doing some research (reading) I think the air bags with an on board compressor set-up will satisfy our requirements. I like the idea of being able to control the settings for various conditions with out visiting a service station to air up. The only thing now is finding an Air Lift or Firestone dealer in our area and get fixed up.
Thanks to all for the comments and ideas.
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Old 09-16-2014, 07:54 PM   #9
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I have had firestone air bags on the Tundra for five years and am on our second 5er. No complaints at all with the air bags. They were an easy self install.
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Old 09-16-2014, 07:56 PM   #10
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I was on my bump stops on my F 250. I put firestone ride rite air bags on with a hard wired on board compressor. I absolutely love it. I would not tow with out them. You can be driving down the road and due to weather conditions adjust you pressure for better ride. Cost me about $1200 for everything installed.
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