Off-road air pressure

Whyte Rhyno

Tremor Addict
Joined
Jan 17, 2020
Messages
1,039
Reaction Points
2,330
Location
Montana
Current Ride
2020 F250 Lariat 6.7 Powerstroke
Current Ride #2
1974 F250 Highboy
Curious about what pressures you all are running when off-road. I typically run 60 front/ 50 rear when on-road. The last couple of trips off pavement I've run 40 front/ 30 rear. No particular reason why I chose those numbers. I wasn't "rock-crawling" so didn't air down too much. Wondering if anyone else has run lower pressures and how things went.
 
Have not aired down yet, have only been on rough forest roads in PA. My pasted vehicle had 33's. Taking 25-30% off the rated psi seemed to work well for me.
 
Curious about what pressures you all are running when off-road. I typically run 60 front/ 50 rear when on-road. The last couple of trips off pavement I've run 40 front/ 30 rear. No particular reason why I chose those numbers. I wasn't "rock-crawling" so didn't air down too much. Wondering if anyone else has run lower pressures and how things went.
This answer will vary depending on the weight of the truck.... I have the 6.7PS so I err on the side of caution and go w/ 35 front/30 rear when doing trails like at WindRock ORV where there's a mix of conditions (rocks,mud, corrugated roads) could go lower but then you run the risk of de-beading the tire/sidewall damage in certain situations or losing precious ground clearance on such a long truck with a very vulnerable belly..... In pure mud/sand you could definitely go lower but how low, I've not tried less than 35/30.
 
Gas truck in the sand ran 14 in back and 16 in front, about a pound more than I ran in my Raptor. In our local off road park went down to 20 all the way around, but really did not need to go down that low. Next trip in will probably do 24 and 22.
 
did the rocks and sand of Utah with 20 front and 15 rear and the trail i did 23 front and 20 rear and have zero problems but if you check my thread the rear tires look very flat

 
30 rear barely caused the tire to bulge so probably a lot of room there. 40 front had some side-wall bulge but nowhere near flat. I'll try closer to 30 front 20 rear next time and report back. just thought i'd throw it out there for opinions
 
Glad I found this thread- I’ll have to try the recommendations on the next run I have this month and report back to what results I get too. The MORRFLATE air compressor just came in! Will be perfect for airing up and and down
 
Depends on the terrain but for sand, I will go down to as low as 15 at the rears and I will stick to 20 for the fronts (that diesel engine is heavy).

Rocky terrain, 25 at the fronts and 20 at the rear.

Bumpy, wavy, or just any other type of crater filled dirt roads, she does good anywhere from 35-30.

Haven't done too much driving on mud or snow here in the AZ desert but when I did, yes pavement pressure was too high 57 F, 52 R.

I do not have beadlocks, running 35 Toyo's MTs.
 
How do these compare to the Geolandar M/T G003 that you had (and that I have currently)?
I get these two confused. I apologize.


What I am running are the Yoko’s MTs you mentioned. Great tire on and off road!
 
Just curious what speeds ya'll are cruising at with these tire pressures. I'm planning on hitting up some unimproved dirt roads with lots of washboards and craters in the Everglades in the next week or two. Plan was to try and bomb them at 30-40 mph, put tires at 40 psi; running the E Venture in Baja settings.
 
When driving canyon roads of rock and dirt, I was at 28 on all tires. I have the 6.7. I didn’t want to go lower than that and risk issues. I also didn’t want to lose more ground clearance.
 
I take a "what do I need to air down to" approach. If the truck does fine without airing down, I don't. Wheeled some outside of Las Vegas last month and didn't air down at all and didn't have any problems with traction. I think I should have aired down some to smooth out some of the hard hits on sharp rocks and smooth out the rough spots.

This approach works fine most of the time except in deep sand.
 
Back
Top