For you I would say about 36/38, not sure what size, ply you have but somewhere in there, ( you will NEVER need to go to 85 lbs unless you are hauling 8000 lbs!

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

Do a chalk test to make sure.

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2002 Jeep KJ Sport 3.7L 4x4

245/75-16 Mastercraft Courser HSX, 16x7 Cragar, 2" OME MD Lift, ARB Bumper
AEM Brute Force Cold Air Intake, Flowmaster Super 44 Muffler

Currently working on: Full service on transmission & bed-lining ARB bumper

viewtopic.php?f=43&t=84650

I run LT255/70R/16 BFG TA KO'S @ 40 psi on road. This seems to give me the best MPG.

I have a question for you, or anyone, would psi should I air down to when wheelin' at places like Crystal Lake (dirt, mud, hills), etc.?

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Illegitima Non carborundom!

CrossBones

yes air down any time you are out wheeling, you want the tires to grip and sort of mold themselves over rocks etc instead of riding up on top of them, so yes air down helps a lot!

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

the max inflation is 80, not 85. I run my LRE MT/R's anywhere from 35-38 front and 33-36 rear, and still knock down 21-22 mpg hwy if I drive like a sane person

Thanks. Is there a specific rule of thumb when it comes to airing down? IOW, how do you gauge what psi to air down to?

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Illegitima Non carborundom!

Wild guess.

Basically, pick a number that sounds good...drop by 2 psi every time you go out, until you de-bead a tire...then add 4 psi:)

I have found, using Thunderbirds specs, 16.8 psi Right Front, 17.1 pst Left Front, 15.3 Right/Left Rear to be the best on my 10 ply MTR.

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'04 Renegade 4x4
L.O.S.T. #058466
Car Domain, Updated: 2/23/2009
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(_l_|_,\____\,_
{----__---_(olllllllo)
()_)"""""()_)--"--)_)

you would use his specs wouldn't you

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

Has to be precise and exact. Otherwise it won't work - slide all over the place.

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'04 Renegade 4x4
L.O.S.T. #058466
Car Domain, Updated: 2/23/2009
===_oooo
(_l_|_,\____\,_
{----__---_(olllllllo)
()_)"""""()_)--"--)_)

I'll play with that varying ballpark figure and see how I do. Thanks.

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Illegitima Non carborundom!

Nah, he's the math guy. I just round to the nearest number. He got it all dialed in and specific

Seriously, though, half the time I don't even air down.