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JimK-NY's avatar
JimK-NY
Explorer II
Jul 06, 2018

Recommendations for suspension mods on a new truck

My previous rig was a Northstar Igloo on a 2010 Dodge crew cab 4x4 2500 diesel. Due to a traffic accident I am replacing the truck with a 2018 Dodge crew cab 4x4 3500 diesel.

The GVW of my rig will be just about the 12300 pound rating for the 3500 with about 7200 pounds on the rear axle. The 2500 definitely needed help with that weight. I put on Rancho shocks and Firestone airbags. The airbags added lots of sway to the ride so I kept the pressure so low they probably did very little good. After a couple of years I added SuperSprings. That made a huge improvement and finally gave me a decent ride with little sway.

Now I am not sure what modifications, if any, are needed for the 3500. My dealer is recommending airbags again. I don't even want to try that based on the sway problem from last time. I am not sure if Rancho shocks are worthwhile since I never drove with the OEM shocks. For a suspension boost I am thinking of Stable Loads or SuperSprings but I am really not sure if I need either.

Recommendations would be appreciated. Thanks.

72 Replies

  • I'm curious. On your airbags, was there one air inlet hooked up to both bags, or did each side have it's own?

    I've seen a bunch of posts that said that a single inlet allows air to move from one side to the other, which is why the airbags don't seem to help with sway at all, but that the double inlet doesn't have that problem.
  • I have a SRW GMC 3500 crew cab 4X4, sort box, and haul a Northern Lite 8-11 drybath Camper. All I added were Timbren SRS rubber overload springs. You would have to go on line and see if they have any that for your truck.
    Airbags aren’t the best thing around here, as we spend lots of time off road camping, and there is a very good chance that you will pop an airbag on gravel logging and Mining roads. The no maintenance Timbren SRS rubber overload was a perfect fit for us.

    Soup