F150online Forums - Trail Grapp air pressure

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Dobie Hauler

12-12-2012 12:13 PM

Trail Grapp air pressure

I'm running 305/55/R20 Nitto Trail Grapps. Any advice on air pressure for a long road trip with a very light load?

kingfish51

12-12-2012 12:16 PM

Looking at the specs of the tire, it has a rating of 3195lbs at 65psi. I would run those at around 45. Do not go any lower than 40. 40 would only be for an unloaded truck.

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