Thread: Tire Pressure
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Old 05-11-2021, 12:46 PM   #20
Cummins12V98
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Join Date: Feb 2013
Location: on the road
Posts: 1,188
Air pressure is determined by the actual load the tire is carrying! "IF" you want to run less than the MAX you need to know what the tires are carrying and use the weight/inflation chart for your tire size and load range then add 5psi to what the chart says. This is directly from GY Tech support.

Axle ratings have NOTHING to do with what pressure you should run.
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