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Old 07-07-2012, 12:46 PM   #1
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BFG Mud KM2 tires

I bought this jeep and it has km2 muds... is there any out there that have these and what regular road psi do you run yours at... mine seem to be wearing uneven, hi low spots and a lot of road noise... mine are set at 35 psi

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Old 07-07-2012, 02:07 PM   #2
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Quote:
Originally Posted by desertguy View Post
I bought this jeep and it has km2 muds... is there any out there that have these and what regular road psi do you run yours at... mine seem to be wearing uneven, hi low spots and a lot of road noise... mine are set at 35 psi
What are your Mod's?

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Old 07-07-2012, 02:10 PM   #3
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Quote:
Originally Posted by 50 Something

What are your Mod's?

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Thought you were saying 50 something for the psi for a second
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Old 07-07-2012, 02:13 PM   #4
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Thought you were saying 50 something for the psi for a second
No I just walked out to see what the pressure on the tire posted by BFG and it says 65 psi...

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Old 07-07-2012, 09:49 PM   #5
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I have mine at 28 psi....i did the chalk test to determine that.
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Old 07-07-2012, 09:53 PM   #6
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Depends on the size and other factors.

35's that I run usually require less pressure. The Tj guys will run 26-28 psi but the jeep is lighter.
I find that to be low and feels "squishy"

I run 30-32 cold which gets up around 35 psi when hot.
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Old 07-07-2012, 09:56 PM   #7
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I am crazy about tire pressures and I know how soft the KM'2s are. If you want them to last the pressure needs to be even between them. My JKUR with 35x12.5-17 with stock bumpers rides between 28-30PSI cold. If it gets hot out I let out some air to keep them consistant. I did the chalk test to determine pressure. 35 PSI cold might be too much air for that tread. The center of the tire will wear quickly, and the ride will be rough.
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Old 07-07-2012, 09:58 PM   #8
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Originally Posted by kjeeper10 View Post
Depends on the size and other factors.

35's that I run usually require less pressure. The Tj guys will run 26-28 psi but the jeep is lighter.
I find that to be low and feels "squishy"

I run 30-32 cold which gets up around 35 psi when hot.
This.

The weight of the jeep is a big factor too. Not a huge PSI difference but must be factored in too. I run mine for some days near 35 after they have heated up and less other days. I dropped mine down to 30 and my mpg took almost a 2mpg hit.
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Old 07-07-2012, 10:20 PM   #9
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Quote:
Originally Posted by chim-chim7
I am crazy about tire pressures and I know how soft the KM'2s are. If you want them to last the pressure needs to be even between them. My JKUR with 35x12.5-17 with stock bumpers rides between 28-30PSI cold. If it gets hot out I let out some air to keep them consistant. I did the chalk test to determine pressure. 35 PSI cold might be too much air for that tread. The center of the tire will wear quickly, and the ride will be rough.
Used to do the same. It's like a cat chasing its tail. Not worth it.
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Old 07-07-2012, 11:40 PM   #10
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Depends on the class of your tires. Some run them over or under for each class for either more feel or higher for better gas mileage but too far under can lead to blow outs were the bead loses it's seal or too high causes less traction and faster tread wear.

In General for the size and weight of a Jeep the standard is:

C class tires 28-34psi
D Class tires 30-35psi
E class tires 33- 37psi

33 to 35psi is always a safe range for a JK
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Old 07-07-2012, 11:43 PM   #11
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Originally Posted by rics1997 View Post
Depends on the class of your tires. Some run them over or under for each class for either more feel or higher for better gas mileage but too far under can lead to blow outs were the bead loses it's seal or too high causes less traction and faster tread wear.

In General for the size and weight of a Jeep the standard is:

C class tires 28-34psi
D Class tires 30-35psi
E class tires 33- 37psi

33 to 35psi is always a safe range for a JK
nice rics

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