Airing down off-road -- 37s

[JeepingNet]

Those on 37s what do you air down to while offroading? I know the terrain is going to matter but let's assume a pretty rocky trail that you are going pretty slow. I'm talking about 4low terrain.

I was out in my Jeep this weekend down to 5psi and realized yeah I have no idea what I'd be at if I had the Power Wagon.. Glad I didn't have the PW since it was still a good 2.5 to 3 feet of snow.

 

[Rockcrawlindude]

knowing a PW weight I’d suggest airing down a bit in the driveway and watching the sidewalls and coming up with a starting point ahead of trail time so you don’t waste trail time goobering with guess and check at the trail head. Park on a brick or a chunk of wood to get a better visualization of the tire deflating than just the flat concrete.

I’d imagine you’d be in the 15-20 psi range and be happy. Guessing based on a 7200lb rig and a 45psi street pressure (also guesses) also assuming these aren’t bead locks

You can let more air out if desired but if you start too low and lose a bead you can damage a tire or just waste a bunch of time. You have an air source on board?

 

[jkbrereton]

Sidewall strength will be the determining factor. As said, the best guestimate would be in the 20's (if you can really accurately guesstimate)

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[JeepingNet]

20ish is what I was thinking about trying first and you guys are totally right the tire and rim choice will be a big factor. I've been wheeling Jeep Wranglers (Cj,Yj,Tj,JK,LJ) for 20+ years so this full-size thing is going to be interesting

I'm going to be running AEV rims with Grabber A/Tx's
I currently run 35 Grabber x3s on my LJ but they are on a 15x8 rim. So much sidewall

 

[Hooligan]

I’m in a 2500 but I go down to mid-teens, like 18 or so. Haven’t tested the lower limits of the rim and bead. I’m on Patagonia Milestars. No beadlocks .

 

[jetrinka]

Mine liked 20 on the stock tire size. Haven't aired down the 35's yet though.

 

[ShadowMTN]

37 KO2s, AEV Katla's, running 18-20 with no issues.

 

[Wobly]

I am running 315/70-17 Falken Wildpeak AT3w's and air down from 45f/40r to 20 to go off road. If I am going in snow, I go even lower. I have the 75A beadlock capable wheels, but am running them as a normal tire on the rim.

 

[elephantrider]

20-ish.. I used to air my jeep down to 5 - 7, but these aren't jeeps.

 

[Rockcrawlindude]

You can glue your beads for extra protection against burping out air when you air down.

On my crawler, I run beadlocks but I still glue the inner beads.

 

[waveslayer]

15-18 psi is what I would do. Bead locks would be a nice addition

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[VegasMoxie]

I keep hoping for a true beadlock ring to be available for the factory beadlock capable rims I’m running.