Terrain Margin
Terrain Margin is an independent guide to generic four-wheel-drive trail technique, terrain reading, recovery planning, tires, suspension tradeoffs, post-trail inspection, and remote-area preparation. It is not a vehicle manufacturer, club, tour operator, land manager, or recovery service.
How to Prepare for Your First 4x4 Trail
Prepare for a first 4x4 trail by choosing a legal designated route below the group's experience and vehicle limits.
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All-Terrain vs Mud-Terrain Tires
All-terrain tires generally balance paved-road manners with traction on mixed gravel, dirt, sand, and lighter mud, while mud-terrain tires prioritize…
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Approach, Departure, and Breakover Angles
Approach angle describes how steep an obstacle the front can meet before contact; departure angle applies at the rear; breakover angle describes whether…
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Build an Off-Road Emergency Kit for the Route
Build an off-road emergency kit for the specific route, people, vehicle, climate, remoteness, and plausible delay.
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How to Choose a Line on a Rocky Trail
Choose a rocky-trail line by stopping on stable legal ground, walking only where safe, and tracing each tire plus the vehicle's underside through the…
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When a 4x4 Water Crossing Is Not Worth It
Decline a 4x4 water crossing when it is flooded, fast, closed, rising, murky, or impossible to verify from safe ground.
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