I am towing a 2016, 34RL Cedar Creek with a 2008, Ram Mega Cab 2500, 6.7L Cummins and a 68RFE auto. I have towed three different 5ers for a combined total mileage of 108,000.
I have made some changes to my truck for improve towing and ride performance. I installed air bags for leveling purposes and I am running different tires for my truck. They are Nitto Dural Grapplers LT285/70R/17 126R tires with Mickey Thompson SideBiter II Rims. This combination will support a load of 3750 LBS @ 80PSI each. I am inflating the tires to 70PSI rear which will support a load of 3415 LBS, the front tires are aired to 55PSI which will support a load of 2890 LBS.
For the model years 2004.5 to 2012 the 3500SRW and the 2500 Heavy Duty model trucks with the Cummins engines are identical except for one component. This is a small helper spring in the rear spring pack for the 3500 SRW model. The trucks are market differently for segment class sales. In 2013.5 model year and up Ram has made some changes that will differentiate the two truck models. Also starting in 2013.5 model year the trucks comply with SAE J2807 towing requirements.
Ram has a towing guide for each model of truck and what it will tow. The page is located at Ram Body Builder Guide. I have attached this link for you to review.
https://www.ramtrucks.com/en/bodybui...de/2016/ramHD/ This is located at the left hand lower corner of the document.
Hope this helps?