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Rivian R1T / R1S Off-Road Tire Pressure Guide

Rivian R1T and R1S off-road tire pressure guide. Safe PSI ranges for the heavy EV with tips for battery weight considerations.

EV Note: This vehicle is significantly heavier than ICE counterparts due to the battery pack. Stay on the higher end of PSI ranges and never go below 20 PSI on standard wheels.

Vehicle Specs

SpecDetails
Weight Range6,800 - 7,200 lbs
Stock Tire Size275/65R20 (LT) or 275/55R22
Common Upgrade275/65R20 (most run stock)
Recommended Hose KitQuad+ 155" (MFQ+) with Rivian extension adapter

Recommended PSI by Terrain

TerrainRecommended PSI
Gravel & Graded Dirt32-36
Rock Crawling22-26
Sand & Dunes20-24
Mud22-26
Snow & Ice24-28

Notes

6,800-7,200 lbs -- significantly heavier than ICE trucks. NEVER below 20 PSI on standard wheels. Low-profile 22" tires have minimal sidewall flex. 20" wheels are better for off-road. Start at 28 PSI and work down carefully.

Hose Recommendation: Quad+ 155" (MFQ+) with Rivian extension adapter. Shop MORRflate hose kits to air down all tires at once.

How to Air Down Your Rivian R1T / R1S

  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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