Tire Pressure & Airing Down Basics
Tire pressure is one of the easiest ways to improve comfort and traction on the trail. This is a high-level overview of why people “air down” and what beginners should know before trying it.
Why People Air Down
- Softer ride over washboards and rocks.
- Bigger tire footprint = more traction in sand and loose dirt.
- Less chance of sharp impacts damaging wheels or suspension.
Basic Concepts (Not Exact Numbers)
- Highway pressure is usually 35–40+ psi on many rigs.
- On dirt, people often drop to a lower range for comfort/traction.
- Lower pressure increases sidewall flex — good for traction, but you must not drive fast or on pavement that way.
- You must air back up before heading home at highway speeds.
Safety Notes
- Never drive long distances on pavement at low off-road pressures.
- Low pressure + speed = heat buildup and potential tire damage.
- Know where and how you’ll air back up (portable compressor, gas station, etc.).
- Don’t go extremely low your first time — learn with the group and ask questions.
What To Bring If You Plan To Air Down
- Tire pressure gauge you trust.
- Small compressor or access to air at the end of the trail.
- Valve core tool/deflator (optional but handy).
On SLC Built Jeeps Runs
On group runs, we’ll usually talk about whether airing down makes sense for the specific trail. You’ll never be forced to do it. If you’re unsure, ask an admin — we’re happy to talk through pros and cons for your rig and experience level.