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Old 04-18-2010, 12:23 PM   #1
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School me on deflators please

I just purchased a set of Trailhead tire deflators. I ran my last Jeep off-road at full hwy pressure. ( only took it off road twice) I decided to get some tire deflators for all future runs. I now have an 07 Unlimited Rubicon with stock suspension and stock tires (255/75r17) BFG Mud Terrains.

The question I have is what would be the recommeded (by you guys) tire pressure for off roading. Conditions on the trails vary: mud, gravel, rocks. Nothing severe but all fun.

I have a deflation guide that came with the deflators, but it does not have my tire size on it. the closest is 285/70r17. The guide shows that tire size with a gvw of 4000 to be 12 psi and 5000 to be 14 psi. Is this a good setting for my Jeep with the tires I am running?

Yes, I did do a search, but could not find what I was looking for.

Thanks, Dan

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Old 04-18-2010, 12:32 PM   #2
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Run your tires round 10-12 psi. They will be fine there. I run my tires at 8 tho.

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Old 04-18-2010, 12:45 PM   #3
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Thanks, Now I know where to set my deflators at.
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Old 04-18-2010, 12:56 PM   #4
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Yep, you should be just fine at 10-12psi. Grippy too!
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Old 04-19-2010, 06:49 PM   #5
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Hell I run my tires at like 15 alot of the time, I go lower if I need more bite but its surprising how grippy BFG A/T's are
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Old 04-19-2010, 09:55 PM   #6
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I run the following pressures:
  • Street pressure: 28 psi
  • General trailing: 12 psi
  • Wet/muddy conditions: 10 psi
  • Snow: 8 psi
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Old 04-19-2010, 10:09 PM   #7
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I run the following- 25-28 psi depending on the day out on the street-

8psi every time it sees trails will be going to zero here soon
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Old 04-19-2010, 10:14 PM   #8
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For your tire size, set them to 12 to 14 and go.

Only need to risk (risk = popping a bead) if you need more tire flex for traction. From your description, you are mostly airing down for ride comfort anyway.

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