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Discussion Starter · #1 ·
On my Street tires :)

2017 SV 4x4, they are the street tires version not on the pro-4x lol

I've done some good off roading with it at proper PSI of 35, have a big Frontier event local this weekend and would like to air down since I'll be in the jungle and swamps most of the day.

Never aired down before and even though I won't get much of a benefit anything is better then nothing. would 30psi be ok? 25 even?
 

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On my Street tires



2017 SV 4x4, they are the street tires version not on the pro-4x lol



I've done some good off roading with it at proper PSI of 35, have a big Frontier event local this weekend and would like to air down since I'll be in the jungle and swamps most of the day.



Never aired down before and even though I won't get much of a benefit anything is better then nothing. would 30psi be ok? 25 even?


Are you talking off-road or on the street going back home ? I’ve had my stock tires at 15-18psi on the beach without issues, they’re softer than my BFG ATs and don’t need to be at 12-15. But if you’re talking about the ride back home for not having a way to air up, I’ve done it at 18psi only because the line at the air station was too long and my ride was only about 20miles to get home and use my shop compressor. Be ware of potholes and speed bumps or anything that could potentially bend a rim. If you’re looking for a good truck compressor try the Viair 88P Amazon usually has it for around 60$ and it will fill a 33 from 15-30psi in about 2 min, been using mine for a few years and love it.


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Unless you’re talking sand or deep snow (in which case, I wouldn’t hesitate to drop ANY tire down to 10 psi), you could probably safely go as low as 15-18 on the stock tires.

Having said that, I generally drop my tires to somewhere between 18-22 if I’m not expecting highly technical terrain. You shouldn’t need to go any lower than that.

You will still get PLENTY of benefit from airing down - better traction and a softer ride, regardless of what type of tire you are running.
 

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Unless you’re talking sand or deep snow (in which case, I wouldn’t hesitate to drop ANY tire down to 10 psi), you could probably safely go as low as 15-18 on the stock tires.

Having said that, I generally drop my tires to somewhere between 18-22 if I’m not expecting highly technical terrain. You shouldn’t need to go any lower than that.

You will still get PLENTY of benefit from airing down - better traction and a softer ride, regardless of what type of tire you are running.
For typical Arizona/Nevada/Southwest corrugated fire roads what do you put your tires at? Still 18-22? These are the type of roads you can hit 40-50 mph at in certain sections, slower in others.

The family and I are doing more and more extended back road trips and I just got my compressor set up and would really like to utilize being able to adjust the tires for more comfortable driving.
 

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For typical Arizona/Nevada/Southwest corrugated fire roads what do you put your tires at? Still 18-22? These are the type of roads you can hit 40-50 mph at in certain sections, slower in others.

In that situation, I’ll either:
A. Air down to about 25 psi (or a little lower if traction might be iffy), or
B. Stay at street pressure out of sheer laziness but spend the entire day regretting my decision.
 

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Discussion Starter · #6 ·
Ok thanks guys, I'll try 25psi, I'll air down when I get there, and drive on the street about 2 miles to air back up.
 

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For typical Arizona/Nevada/Southwest corrugated fire roads what do you put your tires at? Still 18-22? These are the type of roads you can hit 40-50 mph at in certain sections, slower in others.

The family and I are doing more and more extended back road trips and I just got my compressor set up and would really like to utilize being able to adjust the tires for more comfortable driving.
When you air down to 10-15 lbs you get a lot of flex and sway in your tires and the swaying only gets worse at higher speeds, I wouldn't recommend going that low at 50 mph. You'll still get flex and floatation at 25psi and will be more comfortable over rough terrain and keep it more stable at those higher speed.
 

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25 is fine. Lower in rough stuff you risk a pinched sidewall. But regular AZ type trails you can run 25 just fine, even 20 will work a lot of the time.

Soft sand, nothing to pinch stuff, I would start at 20 and expect to run at 15.

A little bulge to the sidewall is fine. When they start to have a fold to them is when things go bad. Sidewalls flex a little just fine. Flexing a lot, continously, even rubber has limits to being folded excessivly before it fails.
 

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If I remember correctly, there was a guy a few years back that was trying to run sand dunes in Mexico and was recommended to run 5 psi by a local.. He had all kinds of problems, said it felt like the tires were slipping on the rims on hard inclines and whatever other issues.. That might be correct for a big sand paddle tire, I dont know, but most of us agreed that 5 psi isn't aired down.... more like a flat. As mentioned above, tires have their limitations and if its your DD and weekend warrior you'll have to go trial and error, start a little higher than you think, maybe 25psi and then drop to 20psi and so on to see if its what you're looking for. It will also greatly depend on what flavor of tire you run too.
 

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Discussion Starter · #10 ·
Well, I dropped to about 25psi on all tires, of course the light came on, but that said, wow what a difference. The biggest benefit I saw or more so felt was just that, the truck was ultra smooth, going over bumps and terrain it was as if I was floating on pillows. Much better.

I was worried the light would stay on, I saw a topic here that you have to bring your truck into the dealer to reset it, was this something old?

Whats the deal with that? the second I filled back up and drove the light went off.
 

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If the sensors are working properly the dummy light will go on and off with the psi going up and down without issues. Under 30psi should turn the light on and over will shut it off.
 

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Discussion Starter · #13 ·
yea, what a difference it made. Seriously didn't think it would do much, but wow! Just for the comfort alone I'll alway air down going forward .
 
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