What tire pressure do you use when offroad? - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 28 Old 02-01-2010, 06:43 AM Thread Starter
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What tire pressure do you use when offroad?

I aired down my new Nitto's to 20-22lbs when testing them out on the hard frozen soil this past weekend and the ride was much nicer but thinking it may have been even better going down a little more. Thoughts?

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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post #2 of 28 Old 02-01-2010, 06:49 AM
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IMO
It depends a lot on where you are wheeling as well as how much wieght you are carrying.
My 35" MTR Ks I usually air down to 15 when wheeling here in AZ.

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post #3 of 28 Old 02-01-2010, 06:51 AM Thread Starter
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Quote:
Originally Posted by owtdorz View Post
IMO
It depends a lot on where you are wheeling as well as how much wieght you are carrying.
My 35" MTR Ks I usually air down to 15 when wheeling here in AZ.
I was basically empty but I am in an unlimited with a heavy front, rear bumper and tire carrier running 35's. And a winch too. So compared to stock, I am guessing that is fairly loaded up.

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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Last edited by v10kingsnake; 02-01-2010 at 07:00 AM.
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post #4 of 28 Old 02-01-2010, 06:53 AM
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I've run my Nitto TG's as low as 12. Sticks like glue baby

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post #5 of 28 Old 02-01-2010, 07:37 AM
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12 - 15 on the KM2's. I stick closer to 15 in fear of blowing the bead.
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post #6 of 28 Old 02-01-2010, 07:59 AM
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6-9 psi on 37" mtr's. No bead locks, never blown a bead.

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post #7 of 28 Old 02-01-2010, 08:01 AM Thread Starter
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Quote:
Originally Posted by RotorHead View Post
6-9 psi on 37" mtr's. No bead locks, never blown a bead.

Real men run single digits.
Not below the waist, shorty.

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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post #8 of 28 Old 02-01-2010, 08:22 AM
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Quote:
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Not below the waist, shorty.
lol..
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post #9 of 28 Old 02-01-2010, 08:28 AM
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8-10 psi

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post #10 of 28 Old 02-01-2010, 08:30 AM
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I'm on the stock 32" MT's and I've been going to 20psi (I run about 36psi HWY) My thought is to enhance traction and ease the stiffness, but to also keep as much hight as possible.

Should I be going lower?

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post #11 of 28 Old 02-01-2010, 08:32 AM
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I go to 16, 14 if i think i may need a little more bite. Really havent 'needed' to go down any more on the rocks out here.

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post #12 of 28 Old 02-01-2010, 08:37 AM
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In the pines I normaly dont air down at all. Out at Rausch Creek I do 18 or so on the stock BFG MTs.

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post #13 of 28 Old 02-01-2010, 08:47 AM
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On the stockers, I have found ~14 to be great as far as traction goes, but you do lose some clearance. I used to run 20, and 14 makes a good difference.

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post #14 of 28 Old 02-01-2010, 09:15 AM Thread Starter
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Quote:
Originally Posted by eggwhite93 View Post
In the pines I normaly dont air down at all. Out at Rausch Creek I do 18 or so on the stock BFG MTs.
Not sure where in the Pines you've been or when the last time you went was, but I can tell you that if you don't air down in Wharton the trails will shake your frigging Jeep to pieces. It is bad out there now. Washboard trails combined with the frozen HARD dirt makes it very bumpy.

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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post #15 of 28 Old 02-01-2010, 09:16 AM Thread Starter
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Quote:
Originally Posted by v10kingsnake View Post
Not sure where in the Pines you've been or when the last time you went was, but I can tell you that if you don't air down in Wharton the trails will shake your frigging Jeep to pieces. It is bad out there now. Washboard trails combined with the frozen HARD dirt makes it very bumpy.
...double post.

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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post #16 of 28 Old 02-01-2010, 09:17 AM Thread Starter
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I almost ripped my damn antenna off the mount before my buddy handed over a bungee to use. If I had to listen to it smack the tire carrier another minute the thing would have been a javelin.

2009 Sahara Unlimited. 5.7L Hemi truck setup. Rock Krawler 5.5 coil over LA. Maxxis Trepador 40's . ATX Rims, XRC front rear and side armor. RROR Crusher corners, RROR flat flares. Warn XD9000i. Prorock 44 with RCV shafts. 5.13 gears, ARB front and rear lockers.
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post #17 of 28 Old 02-01-2010, 09:32 AM
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I usually go down to 15-18, havent ever had a problem.

Also really depends on the load rating of your tires.

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post #18 of 28 Old 02-01-2010, 11:30 AM
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8psi

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post #19 of 28 Old 02-01-2010, 02:48 PM
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10-12psi, 35 in BFG AT KOs
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post #20 of 28 Old 02-01-2010, 05:09 PM
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Stock Rubicon BFGs 12 psi for genersl trail use, 10 psi for dune sand.

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post #21 of 28 Old 02-01-2010, 05:52 PM
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Wow you guys run some low pressure for on the trail,I run 15 to 18 psi on the beach.Never had any issues not airing down in the pines.

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post #22 of 28 Old 02-01-2010, 06:14 PM
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9psi


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post #23 of 28 Old 02-01-2010, 06:20 PM
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Usually around 15psi in 35's KM2. Last trip was closer to 12psi

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post #24 of 28 Old 02-01-2010, 06:35 PM
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10psi
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post #25 of 28 Old 02-01-2010, 06:42 PM
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12 psi works well. 35 x 15 BFG Km2
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