My 2017 Ford F350 CC DRW door sticker says 65lbs for the rear and 70lbs for the front. That is the pressure that I run in them pulling a 2015 3790RD with a pin weight of 3800lbs. I just finished pulling the trailer 8500km (5200 miles) with no signs of abnormal wear. Tires are Michelin LTX A/T 2 size 245/75/17.
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