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Tire pressure for 33" tires wheeling?

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Old 07-10-2011, 06:34 AM
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Originally Posted by GreenJK07
Thanks! I wish there was a chart or guide out there. Next trip I will run them in that area and see how it works for me!
When I bought my Oasis auto deflators, they came with a chart for airdown. Need to know tire size and vehicle weight and it gives you a safe air down psi (along with all the disclaimers) that should prevent bead separation.
Old 07-10-2011, 06:39 AM
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I've been safe with like 16ish so far. My buddy only dropped to 20 and I had noticeably better grip and tire flex.
Old 07-10-2011, 06:47 AM
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I usually go to 15 psi. I have popped only one bead so far
Old 07-10-2011, 07:04 AM
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Originally Posted by single

When I bought my Oasis auto deflators, they came with a chart for airdown. Need to know tire size and vehicle weight and it gives you a safe air down psi (along with all the disclaimers) that should prevent bead separation.
Do you have a pic of that chart? That would be helpful for a lot of us. I ran 12 psi last trip and worked out very well. Curious to see that chart though....
Old 07-10-2011, 10:17 AM
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I guess it's just me, but I would think that each tire would be different as to how much air you can run before you pop a bead. I doubt very much there's a known standard...
Old 07-10-2011, 11:05 AM
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Originally Posted by GreenJK07
Do you have a pic of that chart? That would be helpful for a lot of us. I ran 12 psi last trip and worked out very well. Curious to see that chart though....
It's one of those two piece sliding calculators. Slide it down to your tire size and then read across to your vehicle weight.

Example: Tire: 285/70R17 Vehicle weight: 4000 lbs Safe airdown: 12 psi
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Old 07-10-2011, 04:00 PM
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Originally Posted by single

It's one of those two piece sliding calculators. Slide it down to your tire size and then read across to your vehicle weight.

Example: Tire: 285/70R17 Vehicle weight: 4000 lbs Safe airdown: 12 psi
Thanks! That's kinda cool.



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