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Toyota Land Cruiser (300 Series / GX) Off-Road Tire Pressure Guide

Toyota Land Cruiser and Lexus GX off-road tire pressure guide. PSI recommendations for the heavy full-size platform.

Vehicle Specs

SpecDetails
Weight Range5,600 - 6,000 lbs
Stock Tire Size265/65R18
Common Upgrade285/70R17 (33")
Recommended Hose KitMega Quad (MFMQ) for the larger footprint

Recommended PSI by Terrain

TerrainRecommended PSI
Gravel & Graded Dirt28-32
Rock Crawling18-22
Sand & Dunes16-20
Mud18-22
Snow & Ice22-26

Notes

5,600-6,000 lbs. Heavy, full-size SUV. Factory KDSS or E-KDSS helps articulation. Keep PSI higher than lighter rigs due to weight. E-rated tires on this platform need significant drop. Start at 22 PSI.

Hose Recommendation: Mega Quad (MFMQ) for the larger footprint. Shop MORRflate hose kits to air down all tires at once.

How to Air Down Your Toyota Land Cruiser

  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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