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Old February 9th, 2017, 10:50 AM
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Kent Kent is offline

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Default Tire pressure

Most 1 ton trucks come with tires that have a maximum pressure rating of 80 psi. My 2011 F350 door panel says 75 PSI front and 60 PSI rear. That means under maximum load, 60 PSI is the proper pressure. Unloaded my rear tires show no flex on the side wall at all. A radial tire is designed to flex to get maximum traction etc. I did some research and the only chart I could find was for Toyo tires that showed a minimum pressure for this type of tire at 35 PSI which equates to about 1500 pound load capacity each. My rear axle empty is 3000 pounds so at 35 PSI that would be twice as much capacity as needed. At 35 PSI I see flex in the sidewall and a much softer ride. Seems like it would have to be safer because of better traction on all conditions, especially wet or snow, plus a much softer ride.