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Old 11-13-2013, 05:58 PM   #1
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What tire pressure for the street...

Can someone please tell me what tire pressure I should be running for the street on 265/70/R17 Duratracs - E rated - on my JKUR X? The tire shop has them set to 50psi cold, which seems high, but then again, I've never used an E rated tire before. I ordered the C, and didn't notice that they were E until I got the Jeep home. I had asked them to mount them with the white lettering to the inside, so expected black to show which is what I saw. Stoooopit. They offered to exchange, but since they already basically lost $ on this deal I figured I will learn to live with the harshness.

Thanks for the help!

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Old 11-13-2013, 06:56 PM   #2
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I have 285/70/17 D rated duratracs and run them around 30-32 psi on the road without any issues and great wear. Depending on your climate you can likely run E rated at 28-30 psi since your jeep is light. I'd do a simple chalk test if you want to verify....50 psi is way to high. Only increase pressure if you have increased load like towing. The lower pressure will also help the harshness, help tire wear but hurt mpg

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Old 11-13-2013, 07:04 PM   #3
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chalk test...
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Old 11-13-2013, 07:04 PM   #4
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FWIW, I run ~26 psi w/my 30x9.5x15 (load range C) Grabber AT2s. At more than 30 psi I get bump steer unless I'm loaded down w/stuff.

BTW, my old no-name tires were at 28-30 psi from the PO and the center of the tread wore down long before the edges by the sidewalls. A sure sign of over inflation. I might need to do that chalk test, thinking I might still be over inflated for the weight of the vehicle...
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Old 11-13-2013, 09:21 PM   #5
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Thanks all. I'm taking them down to 32 for now, and we'll see how they do. Much appreciated!
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