Tires for Overlanding: Airing Down for Off-road Conditions

Presented by Hankook Dynapro Tires:
https://www.hankooktire.com/us/en/tirelist/brand-family/dynapro.html

Key Considerations When Airing Down for Overlanding:
Inspect your tires before airing down or traveling off-road. Look for cuts, missing tread blocks, cracking, and uneven wear.
Any tire type can be aired down for improved performance in sand, mud, and snow.
For airing down in the rocks, extreme caution should be used with P-metric and passenger car tires to prevent sidewall damage.
Airing down in the rocks is best reserved for LT tires, or units with 2-3 sidewall plies or more.
A good starting point for backcountry tire pressures is either equal to the rim diameter, or half the vehicle manufacture’s recommended tire pressure, whichever is greater.
In extremely soft or emergency conditions, tire pressures can be dropped to half of the above pressure again, but only to get unstuck, and only at low speeds. Avoid sharp turns.
At low pressures and higher speeds, heat will building the tire quickly, so check tire temperatures regularly. Avoid driving on pavement at low pressures.
Lower air pressures also improves driver comfort, particularly over corrugations and impregnated rock.
Airing down does come at a cost to ground clearance, so balance must be considered in the rocks with lower clearance vehicles.
Airing down also increases strain and pressures on the power steering system, so avoid turning the wheel at a dead stop.
Airing down to trail pressures increases fuel consumption, so bring a compressor and air back up as soon as it is time to return to the road.

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