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Unread 01-31-2013, 02:52 PM   #1
Adam86
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BFG Muds & tyre pressure?

I've no idea of the correct pressure l should be running.

Tyres are 245/75/16

Just after what on road pressures you all run? Different front and rear? Seen quite a few on here with BFG muds fitted.

Cheers

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Unread 01-31-2013, 03:15 PM   #2
Texas ZJ1
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Too much and your teeth will fall out. Too little and your tires will wear funny. Somewhere about 35ish.
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Unread 01-31-2013, 05:06 PM   #3
ratmonkey
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that's over stock pressure. i found my 245 mtr's had the best tread contact at about 30psi. but they were also load range e. i wouldn't go over 32psi in those muds for on highway use.
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Unread 01-31-2013, 06:04 PM   #4
dnuccio
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i run around 35-37 psi in my A/Ts, probably different for M/Ts though
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Unread 01-31-2013, 06:47 PM   #5
Trick440
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I dont get it why wouldn't you run 32?

Offroad drop to 20.
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Unread 01-31-2013, 09:03 PM   #6
jetjr91
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I run my 32" km2 s at 33 psi front and rear. They do great.
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Unread 01-31-2013, 10:56 PM   #7
WhiteOut
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Quote:
Originally Posted by Trick440 View Post
Offroad drop to 20.
You want to air down for more traction when you are offroad.

As for on road, do the chalk test. Put a think band of chalk across the tread and drive around the block a bit, adjust tire pressure until it wears even. It will be different for every Jeep, I ran my KM2s at 28psi
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Unread 01-31-2013, 11:31 PM   #8
ratmonkey
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wider tires= lower pressure on road. the chalk test is the only way to be positive you're running the best pressure possible
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Unread 01-31-2013, 11:50 PM   #9
jnicewan
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I dont run lower than 12PSI for the trail wiithout bead locks and on the street its somewhere between 20-25psi.
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Unread 02-01-2013, 12:40 AM   #10
ZJMatt
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When I had my 32" BFG muds I ran about 30psi for street pressure. For off-road, I found that they were just about worthless until you got to around 18psi.
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Unread 02-01-2013, 11:47 PM   #11
Kur
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on both my stock tires (back when i was stock) and my 33in mtr/k i run 30psi on the street. seems to be wearing just fine. offroad I take it down to 13.
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Unread 02-02-2013, 10:23 PM   #12
JohnnyZJ
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Quote:
Originally Posted by Trick440 View Post
I dont get it why wouldn't you run 32?

Offroad drop to 20.
i run on the street at 22 psi

32 would be way to much.

its simple. you run at a tire pressure where you get even tire contact with the ground. if i put 32 in mine, the outer lugs won't ever hit the pavement. that will make them wear funny (called cupping)

you want to run as much air as possible while keeping a constant contact patch. that is going to differ based on tire size, rim size etc.
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