I have a Dodge 2500 CTD and pull a very heavy horse trailer. I'm guesing 10k-11k lbs.. I have Firestone 10 ply tires and on the side of the tire it says to run max 80 PSI for 3300 lbs. What does the PSI need to be when not towing? It does not say on the tire other than the max PSI.

Bob

 

Looks like on most of the 2500's Dodge recommends running the full 80, or sometimes 70 psi. With your specific year I can look more specifically.