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Old 06-14-2010, 11:04 PM   #1
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What are you guys running?

Curious to know what tire pressure you guys with 35s are running on road/for mudding/ for sand/ etc. My tires were inflated to 60psi when I mounted them. I didn't drive one mile without deflating them down to 34ish. I read the WF TJ thread but wana know what you guys are running. I'm going to deflate mine to around 28ish maybe 26 depending on what I hear!

Thanks guys

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Old 06-15-2010, 08:16 AM   #2
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What size tire, exactly?
For REAL (Rausch Creek) rocks and mud, I run down to 12-15 on my 35X12.5X15" KM2's.
I run 28-30 every day, for god's sake Don't be shy for the tough stuff- let it out! Mark W.

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Old 06-15-2010, 08:43 AM   #3
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35x12.5x18 Mud grappler NIttos
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Old 06-15-2010, 08:46 AM   #4
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I run 33X12.5X15's at 35 PSI on street and I go down to 10 PSI off road (unless I'm strictly doing mud then I leave em at 35
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Old 06-15-2010, 09:14 AM   #5
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35 Mickey T MTZ's.....40 on the street.....15 in sand......40 on trails.....and I H8 MUD!!! LOL.....I leave them at 40 in the mud. THe only real airing down I do is in VERY soft sand..like dune sand..the hard packed stuff..keep em at 40
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Old 06-15-2010, 09:37 AM   #6
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33.2" Hankook Dynapros--

28 lbs street pressure and from 6 psi to 18 psi, when the terrain calls for airing down, (snow/sand/rocks)

My Stauns are set for 18 psi

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Old 06-15-2010, 09:39 AM   #7
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Quote:
Originally Posted by clear lake jeepn View Post
35 Mickey T MTZ's.....40 on the street.....15 in sand......40 on trails.....and I H8 MUD!!! LOL.....I leave them at 40 in the mud. THe only real airing down I do is in VERY soft sand..like dune sand..the hard packed stuff..keep em at 40
Ive heard that above 30 makes the ride somewhat bumpy. Ive definitely noticed a bumpier ride since I changed to the 35s from the stock 18" sahara wheels. That could be a product of numerous things (susp, knobby tires etc) but I thought that we should be running a bit under 30 on street?
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Old 06-15-2010, 10:14 AM   #8
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I run my 35 12.5s @ 26lbs. hwy. I will lower to about 18lbs if the terrain calls for it.
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Old 06-15-2010, 10:53 AM   #9
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I have 35/12.5/15 Mickey's MTZ's at 28. I should be down around 26 but I left a little extra.

My tire wear begins about 1" in from the sidewall.

What's your load range blaster? I run a C on a 2 door at 28psi. A C on a 4 door you'll want around 30 since you weigh a bit more than me.

Vehicle weight, and load range, and rim size are your 3 big factors to determin psi.
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Old 06-15-2010, 11:13 AM   #10
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I think the load range is E on the tires.
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Old 06-15-2010, 11:14 AM   #11
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I think the dry weight on a stock 4 door is 4300. Once you add me, gas, fluids etc it's prolly pushing 46ish
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Old 06-15-2010, 09:02 PM   #12
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3 ways for you to figure this out...

1.) color 3 lugs in a row on a tire with chalk. Drive down the road. The goal is to get the chalk to wear off. If chalk is still on the ends, let a couple pounds out and repeat. Chalk in the middle? You went too far. Add a few pounds.

2.) ask on a forum

3.) just drive it. After a few hundred miles you'll see where it's wearing. Look at my jeep profile. In it I have a pic of my tire tread. Click it and look closely. You'll see how the tread is dirty, but cleaner on the edges of the outside lugs. This is a little too much, but it'll work. As long as your wear is within 1" of the outside, you'll be ok.

Since I read this, I let more air out. I stated above I'm at 28psi on a 2 door on 15" wheels. To get even wear, I aired down to 25psi to get it even across.
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Old 06-15-2010, 10:00 PM   #13
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^ Me too- mine was best around ~28 PSI- these guys running 35+ are asking for a blowout, or bad handling in the wet! Mark W.
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Old 06-15-2010, 10:14 PM   #14
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Quote:
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^ Me too- mine was best around ~28 PSI- these guys running 35+ are asking for a blowout, or bad handling in the wet! Mark W.
I stuck them at 25. Ride feels the same too.

No kidding! Man, the tire shop stuck mine at 40psi! They think I'm driving 8,000 pound dumptruck?

I drove like 1 mile, it handled like crap. Pulled over and blasted down to 30. Drove 100% better. I later let more out. 28 is nice. Good compromise for MPG and wear. I'll give 25 a shot. See how bad it is. I bet a can go to 22psi street and still be ok.

What load range you have? Our setups are similar in this instance. Same rim size, 2 door JK, 35's. If you're a load C we rock
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Old 06-16-2010, 12:28 PM   #15
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Aired down to 27....world of difference from 35!! Thanks guys!

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