NEW Dodge 2013 Ram 3500 4x4 -> ride is horrible! What to do?

You are used to the Mega Cab that has a soft ride. Air rear tires to 45 and set fronts to 70. I assume you have a single rear wheel truck. Long or short bed? Fill in your truck info with more detail you will get better answers.

Also get rid of your factory shocks they are junk. Install Bilstien's the yellow and blue ones.