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Old 05-26-2011, 02:44 PM
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kyakobi's Avatar
Join Date: Apr 2009
Posts: 171
Tires Pressure

I have recently installed the 315 70 R17 BFGoodrich Mud Terrain tires on my Rubicon JK, so I was wondering at what pressure i should run them on the road (daily use)??

noting that it's hot now...

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Old 05-28-2011, 02:57 AM   #2
GroundHawg's Avatar
Join Date: Apr 2010
Location: northeast ohio
Posts: 2,274
Too many factors such as vehicle weight, tire load rating, and climate play into this for a universal answer.

My advice is start at 30psi. Color some sidewalk chalk across a tire and drive in a straight line. Inspect the tire. If the chalk is wearing off in the center, take it down 5 psi and drive again. If your chalk wore off on the outside and not the middle, add 5.

You want to hit that sweet spot where u have all the chalk disappear. That's your ideal psi. Now what I do is go 5 higher. My Jeep is a DD too, so I'm slightly over inflated for better gas mileage. My chalk line wears off except for 1 inch on my tread edges. I've been running like this over 1 year now with no adverse wear.
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