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General Forums => The Mess Hall => Topic started by: slazyks on May 27, 2012, 06:34:13 PM
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I've got 31/10.5/15 BFG MT AT2 on my tj. The tire people inflated them to 40 psi. Today while running Cleghorn I was told I never should have my tires that high and that 28 was good for street. So I googled it and of course I got a trillion different answers. Some say 26 some 35 some 32 etc....... I lowered the pressure down to 35psi (while tire was warm). BTW the sidewall say's 2270 max load single at 50psi.
What do you all think?
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between 28 to 32 should be fine, i run 32psi with 33x12.5x15, imo 40 is really high,
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28 to 30 is fine, you can to the chalk line or what ever it's called and see where the tires contact the ground
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The Higher pressure is for use on a heavier vehical like a truck. The Max numbers would be for a loaded truck.
Our jeeps are really light an d would beat us to death at the Higher Numbers.
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I'm going to do the chalk test this morning since my wife chose me to be the one to go get a good spot at the park bright and early. I'm going to drop them to 32psi and check it. Thanks for the input.
HAPPY MEMORIAL DAY!!!!
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It really depends on the tires contact patch. This will depend on the tire width, wheel width as well as vehicle weight. Wider tires on a narrower wheel will cause the tire to wear like it's over-inflated unless you lower the PSI. The downside is lower pressure means the tire will ride softer and generate more heat which means wear.
When I was running 35x12.5R15's on 15x8.5's I had to run around 25-27psi to get a even contact patch. For my 33x10.5R15's on 15x7's I run 35-40psi. So whoever told you you shouldn't run your tires over 28psi doesn't really know what they're taking about. It's not a one-size fits all sort of thing.