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Old 01-31-2022, 06:21 PM #16
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Quote:
Originally Posted by DAW89446 View Post
I haven’t tried going really low with my ‘18. I run BFG All Terrain T/A KO2 in load range E, which run 45 psi on the road. I’ve lowered them only to 35 to date, mainly just to keep the TPMS sensors from turning on the dash light.

Before my 4Runner, I had a ‘02 Tacoma TRD Off Road. I also ran BFG All Terrain T/As on there (the KO2 wasn’t out yet). I ran stock size tires on OEM rims, 35 psi street pressure.

Back then I lived in eastern California and the eastern Sierra Nevada, Death Valley and central and southwestern Nevada was my play ground. I generally aired down to 20 psi in the front, 18 in the rear. Often, instead of waiting 45 minutes for a red hot 12v plug in air compressor to bring my tires up to street pressure, I’d just drive home at trail pressure. Even in summer, the tires often weren’t too hot to touch, but the truck was noticeably more squirrely. At home I’d air up with my shop compressor.

I’ve often heard that one wouldn’t want to attempt to go below around 15 psi before going with bead locks. That’s for Wranglers and other light vehicles. Our T4Rs are considerably heavier.

I’ve found that even a drop of 10 psi works well for most situations.
I have the same tires and run mine at ~32psi and they seem to wear quite normal. For offroad, 20psi is a good low limit for my worrisome self.
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Old 01-31-2022, 08:29 PM #17
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Originally Posted by tifflieger View Post
I drive in deep desert sand a lot, not beach sand. I often don't have to air down my KO2s at all which are usually at about 40lbs.

I would suggest that you just air down to about 30 and be on the safe side. You can then tell if you need to go a bit lower. I would never go to 15. You never know what forces will act on that tire to take the bead out, and IMO it isn't necessary.

IMO, there is not a magic number. It's "feel" that tells you what you need to do.
Yes I understand there is no magic number. It all depends on what kind of tires you have and on what kind of rims. It seems like most people are saying don’t go below 15 PSI which is good enough for me. I really don’t plan on driving at that low of a PSI. I just wanted to know if I got stuck in snow for some reason how low can safely drop my PSI without loosing a bead lock.
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Old 01-31-2022, 09:35 PM #18
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Depends on lots of factors. Tire model, size, load rating, wheel design and width. I run mine down to about 4psi snow wheeling and 7-9psi in the rocks on 35" MTRs on an 8" wide wheel.
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Old 02-01-2022, 12:10 PM #19
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Quote:
Originally Posted by Jeremy556 View Post
Depends on lots of factors. Tire model, size, load rating, wheel design and width. I run mine down to about 4psi snow wheeling and 7-9psi in the rocks on 35" MTRs on an 8" wide wheel.
My man!

I also don't go below 15 unless necessary but I have dropped it down below 10 multiple times in super soft sand. I like to start at 15-20 and continue to drop until I get the traction I need.
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Old 02-01-2022, 05:18 PM #20
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I'm running stock, got mines on 18psi.
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Old 02-01-2022, 07:38 PM #21
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Quote:
Originally Posted by Nalcyon View Post
My man!

I also don't go below 15 unless necessary but I have dropped it down below 10 multiple times in super soft sand. I like to start at 15-20 and continue to drop until I get the traction I need.
last time i stuck a stick on the valve stem and just waited around till it felt about right. rears ended up at 15. fronts at 20 ish. almost ZERO bulge, they were LOUD on the asphalt in between trails lol.
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Old 02-01-2022, 10:15 PM #22
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Quote:
Originally Posted by AggieOE View Post
I have the same tires and run mine at ~32psi and they seem to wear quite normal. For offroad, 20psi is a good low limit for my worrisome self.
The dealer told me to run 45 psi street pressure, I’ve not experienced any anomalies in driving or tire wear.
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Old 02-01-2022, 11:52 PM #23
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i do 15 psi when i go offroad because my staun deflators are set to it, and I don't over think things.. so 15 psi for everything.

40 PSI on the road, because I'm too damn close to the single MPG club....
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Old 02-02-2022, 01:09 AM #24
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Quote:
Originally Posted by mrblah View Post
i do 15 psi when i go offroad because my staun deflators are set to it, and I don't over think things.. so 15 psi for everything.

40 PSI on the road, because I'm too damn close to the single MPG club....
you need more stickers obvi. wife gets almost 17 when shes driving. IDK how....i bump it down to 15 in a few days lol.

i've got them set to 35 right now. Seems fine
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Old 02-02-2022, 01:28 AM #25
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Quote:
Originally Posted by Lexington View Post
Thanks everyone. The most common answer seems to be 15 PSI. I’m planning to head up to the Tahoe area in a couple of weeks. So if I encounter any significant snow I may need to deflate my tires and wanted to know how low I could go if I got stuck for any reason.

For driving in the snow some mentioned they drop their tires down to 25 PSI for driving in town. What about freeway driving? Same 25 PSI or higher?

And I do have a good tire pump that will inflated in a decent amount of time.
I was just up in Tahoe NF over the weekend doing some snow wheeling/camping. We ran into deep snow right around 5500 ft, the kind that is icy crust on top and powder right underneath. Hope you are comfortable winching because you'll need to do a lot of that.

I was running just around 10 psi with non beadlocks. I've debeaded tires before though. Keep a can of brake cleaner handy and you should be good to go. DM me if you want to be added to a Bay Area 5th gen Slack group. We organize wheeling trips all the time
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Old 02-02-2022, 06:06 PM #26
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I drop down to 9-10 psi for snow on a regular basis. Outside of snow, I usually only air down to 15-20, just to soften the ride on the trail. 285/70R17 on 17x7 Pro Wheels.
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Old 02-02-2022, 07:21 PM #27
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I was just up in Tahoe NF over the weekend doing some snow wheeling/camping. We ran into deep snow right around 5500 ft, the kind that is icy crust on top and powder right underneath. Hope you are comfortable winching because you'll need to do a lot of that.

I was running just around 10 psi with non beadlocks. I've debeaded tires before though. Keep a can of brake cleaner handy and you should be good to go. DM me if you want to be added to a Bay Area 5th gen Slack group. We organize wheeling trips all the time
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Old 02-04-2022, 04:39 PM #28
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Spent last week wheeling in Big Bend NP and Big Bend Ranch SP.
Aired down to 15 in the morning and checked them a couple of more times during the day. No issues at all, even with running the "Black Gap" trail in Big Bend NP. Stock TRD wheels and Falken WP 285/70-17 E-load range. Try to limit myself to about 30mph when down that low.
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