I have a 2019 Ford F250 turbo-diesel with the factory towing package. Added on the wireless airbags. I run 10 psi empty and 65 psi fully loaded with my 330RL. I never carry full liquid tanks on my 5er, but have most of my storage space packed full. 65 psi gives me a fantastic ride--if I don't look in the mirror, I can't tell I'm pulling anything, even accelerating onto the freeway. Love that Ford turbo-diesel!
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