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Discussion Starter · #1 ·
I have run a search but nothing come up as tire specific... If I need to refine search please make suggestions... here it goes...
As you know I got my BFG R/T warranty replaced for BFG ATKO. Load range D. I do not know what air pressures to run. I am playing around with it.... but, very confusing.....

What are you guys with BFG ATKO's finding to be the best air pressures?
I am running a 3" lift and do not plan on adding an aftermarket bumper. I do however plan on finishing my front and rear recivers for my winch....
 

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Discussion Starter · #3 ·
I usually run about 35, but some guys go as low as 32 & say they still get good mileage. If you pump it up to 39 you'll get better mileage, but they may wear out quicker.
thanks!!! I have been playing around with about 30 to 37 psi
 

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Actually I read an article about how to determine the proper (street) pressure when using over sized tires and then saw it on one of the 4x4 shows. It was about chalking your tires to determine the right pressure. The idea is you want your tries to ware evenly across the entire width of the tread.

Nothing magic about the process you just use some chalk and chalk up about a 4 in wide patch on your tire and then drive straight a few hundred yards on relatively level pavement. You can tell if you are under or over inflated by how the chalk wares off.

If the chalk wares off the outer edges your tires are under inflated and if the middle is the only ware mark you are over inflated pretty simple when you thing about it.

As it turns out my 285/70 R17 BFG AT KOs ware the most even at 45 psi with the load of gear (not really that much gear weight) and mods I carry day to day. The BFGs have a bit stiffer sidewall then a lot of the other speciality tires so those will probably take less pressure. These tires are actually rated at 65 psi for the heavy truck they are designed for. The 4500 lbs FJ will give you much more mileage out of the same tire.

If I can find the article I'll post it. It also had some pictures.

EDIT: I found a similar article that only shows them using a line but it produces the same result and there are pictures Tire Pressure Science Chalk Line Photo
 
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