Air Down Guide
Recommended tire pressures by terrain type, scaled to your stock PSI and tire size. Airing down widens the contact patch for better traction, flotation, and ride comfort off-road.
Highway / Stock Tire Pressure (PSI)
Find this on your door jamb sticker or owner's manual.
Tire Diameter
Recommended PSI by Terrain
Based on 35" tires at 35 PSI stock
Highway / Pavement
Always return to stock before highway driving.
Gravel / Dirt Road
Light reduction improves traction on loose gravel.
Hard Pack / Forest Road
Good for most forest roads; reduces jarring.
Typical Off-Road / Trail
Wider contact patch, better traction, smoother ride.
Mud / Wet Terrain
Lower PSI helps the tire claw through soft ground.
Sand / Beach / Dunes
Float on sand. Check bead seating frequently.
Rock Crawling
Max footprint on rock faces. Bead locks recommended at 10 PSI.
Safety & Equipment Notes
• Bead locks are strongly recommended below 10 PSI — standard rims can lose the bead and deflate instantly.
• Always re-air before returning to highway — driving at highway speed on aired-down tires overheats the sidewall and causes blowouts.
• Carry a portable compressor (CO2, 12V, or on-board air) for every off-road trip.
• Check PSI after each major terrain change — tire pressure drops naturally as tires heat up.
• Heavy/loaded vehicles should use the higher end of each range to prevent rim-strike damage.