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Old 06-28-2013, 09:24 PM   #1
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Question about airing down

Tomorrow I'm going wheeling and I was gonna air my tires down but I'm not sure if I should because when I got done it will be at least 10 miles or so before I can air them back up. Right now my stock air pressure is 37 psi and I was thinking about dropping down to 25. My questions are 1 will 25 be low enough for the trails? 2 will 25 psi be to low to be driving on the road that far? I'm not planning on doing to much rock crawling although there will be rocks involved.

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Old 06-28-2013, 09:31 PM   #2
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not necessarily needed. you can drop to 25 though. usually the safety margin is at 10-15 if you dont have beadlocks.

i wheel mine with @35. i don't really need to air down as much depending on the terrain i run. i just hit all the trails that the others (air downed jeeps) took...it was just more bouncy.

25's are ok to get to that 10 miles to air up. my buddy goes all the way to 15 and aired back at the nearest gas station 10 miles away although he was taking his sweet time.

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Old 06-28-2013, 09:31 PM   #3
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I'm about 24psi for daily driving right now on 35s. You'll want to be closer to about 10 or 15psi. Are you wheeling with a group? More than likely someone will have an air compressor/c02 that you can borrow.
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Old 06-28-2013, 09:39 PM   #4
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I will be wheeling with a group of people so I'm sure someone will have air. I don't know if it matters but the tires I'm running are the stock mud terrains on the rubis
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Old 06-28-2013, 09:44 PM   #5
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if ur buddies have air, then go for it. you'll have a much smoother transition when u go over obstacles...it won't be as stiff if you were to wheel with 25+psi
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Old 06-28-2013, 10:00 PM   #6
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I've driven on the road with 7-8 psi. I had to go a little slower than normal, 20-30 in a 45. Not a problem. I would air down to around 12 and you won't even notice it on the road other than on sharper turns.
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Old 06-28-2013, 10:02 PM   #7
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You can sadly air Down to 15. Psi. Without bead locks. Don't go lower or you might spin a bead off. If your light trail runnin. I'd be around 25-30. If your wheelin hard. And crawlin get down aroun 15-20. You can run 15 on the road to get back to a gas station. You just don't want to rub 100 miles at 15. Because it will wear your rubber unevenly. Nice smooth ride though ! (. I started with regular rims, now I run trail ready bead locks. Airing down is the most underrated part of wheeling. It can be the difference between getting home or not. I always ajust my air for different terrain in wheelin. Its the key to wheelin in my opinion. ).
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Old 06-28-2013, 10:34 PM   #8
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I run my Duratracs at 31 all the time. Ran some nasty trails and never aired down any lower. I guess it would depend on how bad the trails are but I have not yet ran into anything that I needed to.
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Old 06-28-2013, 10:42 PM   #9
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I run my Duratracs at 31 all the time. Ran some nasty trails and never aired down any lower. I guess it would depend on how bad the trails are but I have not yet ran into anything that I needed to.
Nasty trails and 31 psi don't belong in the same sentence IMO. You should try it. It makes a huge difference.
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Old 06-28-2013, 10:52 PM   #10
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I run at 10-15 psi on my procomp mt's
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Old 06-28-2013, 10:53 PM   #11
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I run my Duratracs at 31 all the time. Ran some nasty trails and never aired down any lower. I guess it would depend on how bad the trails are but I have not yet ran into anything that I needed to.
At least air down once and see how much smoother the ride.
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Old 06-28-2013, 10:55 PM   #12
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Ya I definitely want to try it out just to see the difference. This will be my 3rd trip offroad so I still have a lot to learn
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Old 06-28-2013, 10:59 PM   #13
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In my 13 JKUR I run about 19 in the desert sand and rocks on stock mt's. They do just fine and will rinkle a bit while trying to side climb a rock. That's my comfy choice.
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Old 06-28-2013, 11:33 PM   #14
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You can go as low as 15 if you wanted to. I have the Sahara 18's and AT and I do awesome aired to about 16. I say 17 will be safe and get you into and out of serous stuff, and if there's serous amounts of soft sand, your gonna be extremely happy you went with 17 and not 20+. Every psi makes a difference when you play in sand.
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Old 06-29-2013, 05:56 AM   #15
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You won't see much or a difference until around 12-15 depending on your tire.
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Old 06-29-2013, 06:20 AM   #16
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With those tires we always aired down to between 12-15 depending if we were fire roading or rock crawling. Lower pressure for rock crawling. For just fire roading down to about 20 so the wash board of the road wasn't so bad on us.

You can pick up an inexpensive pump at pep boys, wal-mart and such but be forewarned they take a long time to air up even stock tires.
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Old 06-29-2013, 06:44 AM   #17
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There are some slightly more expensive but still reasonably prices compressors that will inflate your tires much faster than the cheap ones. They typically connect directly to the battery rather than through an accessory power outlet. I picked up a Q Industries MV50 SuperFlow High-Volume Air Compressor from Amazon for around $50. It won't match the speed of the really good compressors but it won't take all day either.
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Old 06-29-2013, 09:04 AM   #18
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There are some slightly more expensive but still reasonably prices compressors that will inflate your tires much faster than the cheap ones. They typically connect directly to the battery rather than through an accessory power outlet. I picked up a Q Industries MV50 SuperFlow High-Volume Air Compressor from Amazon for around $50. It won't match the speed of the really good compressors but it won't take all day either.
I snaged the same unit and I have been very happy. It will air up one of mine vs all 4 from a co2 tank but its not a $300 unit with $20 refills. Although I still want a tank.
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Old 06-29-2013, 09:21 AM   #19
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Check out viairs units.
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Old 06-29-2013, 12:26 PM   #20
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Thanks bflank, I think I'm gonna order that today
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Old 06-29-2013, 02:37 PM   #21
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I snaged the same unit and I have been very happy. It will air up one of mine vs all 4 from a co2 tank but its not a $300 unit with $20 refills. Although I still want a tank.
I run a 10lb co2 from 10 psi ( air down ) to 35 psi (air up) I can get 16 tires out of it and it cost 14 to refill it where I live
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Old 06-29-2013, 05:29 PM   #22
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Check out viairs units.
What he said!
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Old 06-30-2013, 12:47 AM   #23
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i use this compressor, attaches directly to the battery has not failed me yet Smittybilt 2780 - Smittybilt High Performance Air Compressor - Quadratec
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Old 06-30-2013, 01:07 AM   #24
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I've driven 10-15 miles on 10 psi into town to air up before on 35's. I had no issues but if was wheeling more then once a month air would be very high on my list.

Also drove 40 miles home with the steering wheel upside down on the highway. That was way more scary lol
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Old 06-30-2013, 02:22 AM   #25
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Originally Posted by bflank View Post
There are some slightly more expensive but still reasonably prices compressors that will inflate your tires much faster than the cheap ones. They typically connect directly to the battery rather than through an accessory power outlet. I picked up a Q Industries MV50 SuperFlow High-Volume Air Compressor from Amazon for around $50. It won't match the speed of the really good compressors but it won't take all day either.
I have this same compressor and hard-mounted it under the hood and hardwired to the battery. Works great for the money.

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