Topic: Air Pressure for BFG A/T 33X12.50

[mrcabinet]

Just curious as to what others are running. I've been experimenting, going from 25 psi to 34 psi. Right now they're at 28 psi, which seems to feel fairly decent.

[Jesse-James]

I did a chalk test on mine, but when I ran 33's I ran 28.

[sharpxmen]

Just curious as to what others are running. I've been experimenting, going from 25 psi to 34 psi. Right now they're at 28 psi, which seems to feel fairly decent.

i found that 31 psi works best for me but i have M/Ts so that could be different and i also have 10'' wide rims and the tire sits flat anyway so could be different if the rim is narrower.

[jfrabat]

I did a chalk test on mine, but when I ran 33's I ran 28.

33X12.5 KM2's MT on 8" wheels; 28 also works for me.

[neale_rs]

33 X 12.5 15 KMs on 7 inch rims at 25 psi.

[mrcabinet]

Thanks for you replies!
25 was too soft and 34 was too hard for me. At 28 the front still seems to drag a little bit while turning so, since I have 10" rims I think I'll give 30 or 31 a try.

[jfrabat]

Thanks for you replies!
25 was too soft and 34 was too hard for me. At 28 the front still seems to drag a little bit while turning so, since I have 10" rims I think I'll give 30 or 31 a try.

At 28, I do feel it takes a fraction of a second for the Jeep to turn when I am driving and suddenly turn the wheel...  But more pressure, and the ride becomes too stiff for my taste

[dwtaylorpdx]

Remember to set the pressure cold, and occasionally check it hot. I have found some AT tires do heat up a lot, I end up adjusting tire pressure based on weather and driving conditions and mission of the day :) For instance if I'm headed down the freeway and I know its going to be hot, I usually start at my base pressure and bleed a couple pounds off if its going to be a multi day / many hour freeway burn. I try and keep the working pressure under 35 on my Toyo's. Other wise I need new fillings at the end of the day since they are 10Ply load range E 


Dave

[mrcabinet]

Well, it turns out that my old tire pressure gauge was off by about four pounds (low). I found out when I used a friend's fancy schmansy digital gauge. 28 was actually closer to 24 and 34 was more like 30. I took the pressure up to 33 and man, what a difference! The ride is a tad stiff, but driveability on the freeway is 10 times better. No more wallowing around or drag when I turn the wheel!