Hey guys,

For those of you who run BFG A/T KOs, how much air do you have in them? I just had some installed (31x10.50x15) and they looked a bit low tonight so I checked them and the gauge indicated about 25-27 PSI. This sounds kinda low to me but what do I know. BFG says not to inflate over 40 PSI. What's the happy medium?

 

Try between 32-35, some of it boils down to personal preference. I run about 35 in my michelin's

 

Thanks CTB! I thought mine were a bit low!

 

I also ran 32 p.s.i. in my a/t's

 

No sweat, anytime

 

I run mine at 45psi with no problems.

 

Do you get a flat footprint? It's seems real excesive!

 

I have the 32's on mine and I run about 32 psi in them for the street. Off-road I usually run anywhere from 17 psi to 20 psi depending on the terrain. They have a pretty soft compund, so you don't need to air them down as much as others.

You could always do the chalk test on your tires - I have some tire links HERE

 

Good question- I was gonna ask myself and was going through the archives last night.
BajaTaco- How "low can you go" on the stock rims? I have the exact same setup and heard that you can air down quite a bit- I'll be up in the snow in Colorado and will need to get pretty low for some traction/floatation.

 

I run 32 psi and have ran as low as 12 psi on 15X8 rims.

 

35 psi here on my michelins

 

You can air way down to 10 or 12 psi if you are going to run in soft sand. For snow, I would probably try 17 psi first, and then go down a little bit at a time until you are happy with the results. It depends on what the terrain is like under the snow, and how hard packed and uneven the snow might be. If it is powder and relatively open, flat terrain, then you could go lower. I am not the person to ask about snow though. I just don't have enough experience driving in it (I'm from Arizona ) to know what the hell I'm talking about. I only get to drive in snow a couple of times a year usually.

The thing you need to be careful with on the BFG's is that if you are doing rock crawling or off-camber stuff, the tires will fold unbelievably even at 17 psi. If you go a lot lower, it can really pitch your truck depending on the situation, and you can risk busting a bead. Moab is a great example of where you don't want to air down as much as you normally might have. There is sooo much traction on that rock, that you don't need to. And there is alot of tippy spots in Moab where you don't want your truck rocking and pitching on a really flexy, folded sidewall.

 

I run about 35-37 in mine. it will help them last a bit longer.

 

im running 35x12.50x15 under 35psi.

 

I'm running between 28-32 psi (back-front). My first pair of KO's didn't last as long as I would have liked because I ran too high a pressure in them (35-38). The center was bald while the outside still had 1/4" tread. The best way to figure the correct pressure is with a chalk test. Find a level flat spot like you're driveway. Take a large piece of chalk and coat a piece of paper. lay this in front of your tire then roll over it 1 revolution. If the pressure is correct the whole tread width should be coated with no voids. This procedure was explained in depth on another web site. It may have been TTORA.

 

I have had BFG ATs for 3.5 years. I think the reason I got them to last so long is higher pressure for pavement. I ran them at 40. Offroad I would go down to around 18. The sidewalls are soft and will flex nicely at that pressure. My new Goodyear MTRs have very hard sidewalls and I'd have to go to 12 or so to get the same flex from them.

If your curious try this, inflate one front to 40 and one to 32, drive for 10-15 minutes at highway speed. (Be careful in the turns) Then stop and feel the temprature of the tread on each. The 32 will be warm, the 40 will be cool. That's because there is less friction on the 40. Less friction = less wear = longer lifespan =more return from your investment. 3.5 years and 60,000 miles later i'm still running 40 for pavement.