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Toyota 4Runner (5th & 6th Gen) Off-Road Tire Pressure Guide

Toyota 4Runner off-road tire pressure guide. PSI recommendations by terrain for 5th and 6th gen models.

Vehicle Specs

SpecDetails
Weight Range4,400 - 5,000 lbs
Stock Tire Size265/70R17 (31.5")
Common Upgrade285/70R17 (33") or 285/65R18
Recommended Hose KitQuad+ 155" (MFQ+) -- longer wheelbase needs the extra reach

Recommended PSI by Terrain

TerrainRecommended PSI
Gravel & Graded Dirt25-28
Rock Crawling15-20
Sand & Dunes12-18
Mud15-20
Snow & Ice18-22

Notes

Per TacomaWorld forums, avg trail PSI ~18. Small rocks 25-28, boulders 20-22. TRD Pro and Trail Edition have better off-road suspension. E-rated tires need more PSI drop for same flex.

Hose Recommendation: Quad+ 155" (MFQ+) -- longer wheelbase needs the extra reach. Shop MORRflate hose kits to air down all tires at once.

How to Air Down Your Toyota 4Runner

  1. Park on a flat, stable area before the trailhead.
  2. Set the parking brake and check current tire pressure with a gauge.
  3. Use your deflator or MORRflate system to release air to your target PSI (see table above).
  4. Adjust all four tires evenly. Drive a short distance, recheck, and fine-tune.
  5. Re-inflate before returning to pavement. Low pressures at highway speeds cause heat buildup and blowout risk.
Safety: Always re-inflate before returning to pavement. Running low pressures at highway speeds can cause heat buildup, sidewall damage, and even a blowout.

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