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Thread: Recommended tire pressure - on road

  1. #1
    Knows a Thing or Two Sporadic's Avatar
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    Recommended tire pressure - on road

    Nitto trail grapplers 35x12.5xR18, 2.5" lift.

    I had tires set at 37 psi but after last service visit to dealer I found them at 40-41 psi! I noticed more "wandering" on the highway which led me to check the tire pressure.

    What psi are you guys ruining on your 35's when on-roading?

  2. #2
    I run my 37" KM2s at 28 psi on the road.

  3. #3
    Fresh Catch JKNuts's Avatar
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    Recommended tire pressure - on road

    I have found that 32 psi works for my 09 JKUR with 35 inch BF Goodrich mud terrains. I have more even wear that way. I know some of the guys at Teraflex said they never run over 30 psi on their 37 inch tires. My son runs 37 psi in his 35's and I find it harder to drive.

  4. #4
    Nothing but a Thing munstie's Avatar
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    Re: Recommended tire pressure - on road

    I run 28 psi on the street in my 35" Toyo M/T's. Try chalking the tires and adjust your pressure accordingly.

    2011 JKU 3.5 R.E. Longarm lift.

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  6. #6
    Addict StrizzyChris's Avatar
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    agree with everyone on here...I am running my 35" Nitto Muds at 29. I had a ton of wondering from the dealerships 35lb...lowered it to 28 and it felt great. On my drive from Ohio to Cali, the air and tires warmed up and mid trip I developed the "sensitive steering" again. It was back to 35lb range. After lowering down to 29 its the perfect feel for me!
    2013 Dune JKU Rubicon <-- Build Thread

    37" Nitto Trail Grapplers on 17" ATX Slabs, EVO BO Coilovers Front and Rear, GenRight Rear Tire Carrier, RK Front lower Control Arms, Adams 1310 Front DS, LOD Sliders, DynoMax Comp Exhaust, EVO ProTek Skids, Fender Trim, EVO 1/4 Pounder and stinger, Warn 9.5ti, EVO C-Gussets, AEV Procal, Trektop NX

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  7. #7
    Been Around the Block Sola_Christos's Avatar
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    Quote Originally Posted by StrizzyChris View Post
    agree with everyone on here...I am running my 35" Nitto Muds at 29. I had a ton of wondering from the dealerships 35lb...lowered it to 28 and it felt great. On my drive from Ohio to Cali, the air and tires warmed up and mid trip I developed the "sensitive steering" again. It was back to 35lb range. After lowering down to 29 its the perfect feel for me!
    Good stuff guys! I was just wondering about that. "Now I know...and knowing is half the battle!!" (for you old heads out there!)
    "Sola Christo. Sola Fide. Sola Scriptura."

  8. #8
    Resident Smartass OverlanderJK's Avatar
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    I currently run 28PSI in my mud grapplers but might bump it up to 30 to see how it feels.
    RECOMMENDED JEEP PARTS & ACCESSORIES

    2012 Dozer JK
    -Dynatrac PR44/Rubicon Rear
    -Nitto 37” Trail Grapplers
    -Rock Krawler 2.5” Lift
    -ATX Slabs
    -Warn VR8
    -EVO Armor/Bumpers

    2012 Billet Silver JKUR
    -EVO DTD front and rear
    -Dynatrac PR60/PR80
    -EVO High Clearance Long Arm
    -Nitto 40” Trail grapplers
    -KMC Machetes
    -JE Reel 1410/1350 Driveshafts
    -Warn CTI 9.5
    -EVO Armor/Bumpers

    1975 DJ5

  9. #9
    Nothing but a Thing
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    28-30 is good. the km2's are thinner walled so they flex a bit more and you can get away with a bit more psi

  10. #10
    Nothing but a Thing bdmckenna's Avatar
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    I run my MT/R's at 35 psi on road hence forth my good gas mileage. Trails are anywhere from 3-8 psi.
    Brian McKenna
    Belfair, WA
    2012 White JKRU w/Bells & Whistles

    Yeah... I wheel. Nuff said.

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