Most people think the front tires can be dropped several pounds on account the front isn't loaded like the rear. My placard on my Ram's door jam says 80 psi. When loaded or empty my front axle weighs the same and i suspect most other rigs are close to the same. I run 80 psi at all times in the front and 65 psi in the rear empty and 70 psi loaded. I do have a dually so 70 psi is adequate for the rear loaded but it's always better to run a little more than you need than less especially in warm climates.
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