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Old 04-04-2014, 09:25 PM   #1
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What PSI for the desert?

Running around in my new JK north of Phoenix. Seems like the pressure could be a but lower. I have the BFG Mud Terrains that came on my Jeep. I guess they are the same wheels and tires off of the Rubicon. Some spots seem kinda rough. These are C rated and running around 36 pounds.
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Old 04-04-2014, 09:47 PM   #2
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36psi way too high. Air down to 15.

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Old 04-04-2014, 09:48 PM   #3
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30-40 is what I run my bfg mts in the California desert. Sometimes less if I need to go thru deeper sands
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Old 04-04-2014, 09:53 PM   #4
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15? Do you bring a compressor with you? I ordered one from quadratec, a little one, but it won't be here for a bit?
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Old 04-04-2014, 09:59 PM   #5
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Looks like you're on hard-pan in the photo. Traction won't be a problem, but rough ride will be. Try something modest, like 28-30 lbs to smooth out the ride. You can always let more out if you hit soft stuff. And you can drive on paved roads back to a place to air-up with out damaging your tires at 28 lbs.. IMO - YMMV.
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Old 04-04-2014, 10:06 PM   #6
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If you are running the stocks, start with 15-18 PSI. It gives you just enough cushioning to still drive at decent speeds on packed trails and enough flotation if you hit moderately loose sand. Then if you get into looser sand and need more flotation you go down to 10-12 psi. I won't go below 10 psi on the stock rim tire combo but I've seen others go down 6-7 psi. This is one place pizza cutters are not optimum.

One of the benefits of running wider tires like 12.5s is that they have a very tight fit on the 7.5" rims so you can air down quite low without loosing a bead. Onboard air also makes it trivial to air down and back. Just don't run above 10-15 MPH very long on a packed surface when aired particularly with tall sidewalls (15" rims + 35s) because the tire heat up really fast from the friction.
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Old 04-04-2014, 10:09 PM   #7
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I generally run 14 psi in the deserts of UT, NV, and AZ. Depends on tire size and conditions though. Bigger tires can get by with lower air pressure. For 37s I run 12, for 35s I run 14, and for stock tires I run about 17.
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Old 04-04-2014, 10:56 PM   #8
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Cool, thx guys.
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Old 04-05-2014, 12:17 AM   #9
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Great info here. Thank!!!
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Old 04-05-2014, 02:01 AM   #10
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On the east coast on some of the beaches that have check points and require permits they will turn you away if you are over 15psi. I usually run 12, but the sand can be soft.

great little compressor from Amazon for $62. It's temp one until I install a viair or ARB.

MV50 SuperFlow High-Volume 12-Volt Air Compressor
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Old 04-05-2014, 05:43 AM   #11
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Quote:
Originally Posted by MTNJeep View Post
On the east coast on some of the beaches that have check points and require permits they will turn you away if you are over 15psi. I usually run 12, but the sand can be soft.

great little compressor from Amazon for $62. It's temp one until I install a viair or ARB.

MV50 SuperFlow High-Volume 12-Volt Air Compressor
I have that same compressor. Got it at Pep Boys for $70 or so. Great compressor. Ive had it for 3 or 4 years now I think and used it in my toyota and now in my jeep.
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Old 04-05-2014, 07:59 AM   #12
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Howdy neighbor (from Scottsdale by the TPC)! Around 30ish is nice on pavement. A lot of guys run15-16 offroad. I havent gone that low yet since I still have the stock toy tires-should be getting real tires soon tho.

I also have the MV50 compressor.
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Old 04-05-2014, 09:33 AM   #13
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Originally Posted by mommymallcrawler View Post
Howdy neighbor (from Scottsdale by the TPC)! Around 30ish is nice on pavement. A lot of guys run15-16 offroad. I havent gone that low yet since I still have the stock toy tires-should be getting real tires soon tho.

I also have the MV50 compressor.
Howdy back neighbor. Will defiantly be lower them on my next outing.

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