post #1 of Old 05-07-2011, 01:27 AM Thread Starter
devinci
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stock tires

Hey guys,

Should I be airing down with stock sized tires when I go off-roading? This weekend I'll be mainly on rocky trails with the occasional muddy spot but nothing too rough.

Keep in mind my WJ is still at stock height as well.

On-road i run them at 33psi.

Any suggestions?

Thanks

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post #2 of Old 05-07-2011, 07:41 AM
Holm-z
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Airing down will give you better grip on rocks and obstacles.. I recommend it. I think if you aired down you will probably lose about an inch or so of clearance depending on how low you drop your psi.

1998 TJ Sport 4.0L 5spd
3.75" RC
33x12.5x15 Goodyear Duratracs

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my TJ build
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post #3 of Old 05-07-2011, 09:04 PM Thread Starter
devinci
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That's what I was debating. There are already a few spots where I scrape on this trail so the extra gc might help.

Is there more of a risk of puncturing a tire if I left them at road pressure?
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post #4 of Old 05-07-2011, 10:46 PM
92 Green YJ
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you may be more likely to puncture at street pressures as the tires wont flex around the rocks as much as they will aired down. Id go down to maybe 20PSI as a starting point and see how it goes, you can always take more out or put more in.

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post #5 of Old 05-08-2011, 07:10 AM
Holm-z
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I wheeled many times before without airing down and never popped a tire, its all about being careful and picking good lines. I have noticed that it does make a big difference though if you air down, I was amazed at how much more grip I felt on the trail. I bought a small portable compressor that plugs into the cigarette outlet for filling back up after the trail.

1998 TJ Sport 4.0L 5spd
3.75" RC
33x12.5x15 Goodyear Duratracs

Superwinch 10000lb
Monstaliner, CB, Aux lights
my TJ build
I understand.
IAFF Local 4942
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post #6 of Old 05-09-2011, 08:22 PM
billzcat1
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Definitely air down. On all-terrains with no beadlocks, I think 15-20 psi is about right to give you some resistance to blowing the bead and not compromise your ride height too far. Not only will it help your level of grip, but also level of comfort off-road. A tire at 15psi absorbs a lot more of the impact from every single bump. If I might make a recommendation, the MV-50/MF-1050 air compressor (usually $60 or so) is an excellent budget compressor that will refill your tires in about 2 minutes each when you are done for the day. It draws 30 amps and connects straight to the battery with spring clamps.
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