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Old 01-08-2013, 12:05 AM   #1
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Advice please

I have a new set of Kenda Klever M/Ts on my 2011 JKU with 17" rims and and currently running 40psi. The Pepboys that installed the tired aired them up that high but it seems ludicurous to have mud tires at 40 PSI. They are 265/70s on the 17" rims. Any idea of the psi for onroad driving??

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Old 01-08-2013, 04:47 PM   #2
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Forty seems way high to me...tire shops are notorious for overinflating off road tires.

Best way to get your optimum PSI for everyday road use is via the chalk test. Link below...

How to Chalk Tires | eHow.com

Use the chalk that carpenters use in string lines, so it'll transfer well from your tires to the asphalt. Don't buy the permanent chalk...it'll say on the bottle.

Simplest method is to chalk a tire, then drive on it for a few miles and see how the chalk wears. If it wears just in the center, you're overinflated. Just on the edges of the tire, you're underinflated. Takes a little trial and error, but once you get it right you'll get maximum life outta your tires.

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Old 01-08-2013, 05:01 PM   #3
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^this.

I've seen people run them anywhere between 25-35 psi, so the only real way to find your ideal number is the chalk test.

Also, welcome back wolf
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Old 01-08-2013, 05:02 PM   #4
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Mud tires normally take a higher PSI. 40 psi is not out of range for larger mud tires.
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Old 01-08-2013, 05:23 PM   #5
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Quote:
Originally Posted by Manhunter
Mud tires normally take a higher PSI. 40 psi is not out of range for larger mud tires.
"Larger" ?
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Old 01-08-2013, 09:28 PM   #6
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Originally Posted by kjeeper10 View Post
"Larger" ?
"Larger" as in larger than normal street tires, sorry. "Mud" tires normally have thicker walls with deeper tread patterns hence the higher psi. I ran normally 40-45 on my BFG Mud terrains for normal street driving. Of course deflating on the trails (10-15psi).
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Old 01-08-2013, 09:32 PM   #7
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Thanks everyone I'll try the chalk test once I get a chance. Downside to having tires almost no one else runs is you never know what to expect with this things haha. I know the tire can "handle" up to 50psi, but I dont want it to crown or compromise my ride too much. For right now 38 is doing well but I will try the chalk test soon. Thanks again!
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Old 01-10-2013, 12:41 AM   #8
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i personally run 36-38. just keep an eye on your wear pattern.
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Old 01-10-2013, 12:45 AM   #9
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Quote:
Originally Posted by GabeD
i personally run 36-38. just keep an eye on your wear pattern.
kenda klevers? or another tire?
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Old 01-10-2013, 11:06 PM   #10
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kenda klevers? or another tire?
I had the original Goodyear mtr and then ran boggers.
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Old 01-11-2013, 01:43 AM   #11
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28psi on a 35" MTR

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