NHTSA and RVIA reference proper tire pressure for safety. Link to best tire inflator for RV, 12V vs 120V. See best tire inflators. Electrical: RV electrical.
Typical range: 50–80 PSI for trailer tires, 60–80 for motorhome. Check the placard on your rig—never exceed max on sidewall.
If you're diagnosing RV electrical or appliance problems, these guides may help:
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Last updated: March 2026 · Reviewed for technical accuracy