Duratrac 315x70x17 - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 07-09-2012, 11:45 AM Thread Starter
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Duratrac 315x70x17

Just upgraded from stock Rubi 32 inch tires to the duratrac's 315 70 17 and I was wondering what tire pressure others are running? When the tires were installed they put em at 35psi but the tires feel a bit washy. Should I be running a higher pressure or is this feeling just because I am running a lot bigger tire than I am use to?

Thanks,
Chris
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post #2 of 7 Old 07-09-2012, 12:02 PM
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What size is that roughly? 35"? IMO 35PSI is too high but only to be sure is to chalk them.

I run my 315/75R16 at about 28PSI

-Dan

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post #3 of 7 Old 07-09-2012, 12:12 PM
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I'm running 28 psi. 23K miles and they look great

Rock Krawler 3.5
8 RK flex arms
Front and Rear RK Trac bars
Tera flex 2.5 bump stops
Procomp 17x9
315/70/17 Duratracs
Bilstein 5100s
XRC 10 winch
Homemade front and rear bumpers
jks disconnects
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post #4 of 7 Old 07-09-2012, 12:29 PM
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I am running 28 in mine.

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post #5 of 7 Old 07-10-2012, 06:53 AM Thread Starter
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Thanks I am going to try the chalk line when I cut my fenders at the end of the week. I was curious to see what psi others are running. At 35psi it just felt like it was all over the road and I was wondering if it was from being over inflated or under inflated.

Thanks,
Chris
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post #6 of 7 Old 07-10-2012, 07:04 AM
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Over inflation. Being over inflated means the tires are like balloons and bounce all over especially over bumps. With less air they will be more forgiving.

-Dan

2008 JK X: Sold
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post #7 of 7 Old 07-11-2012, 06:53 AM Thread Starter
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I am going to play around with different tire pressures this weekend and try the chalk line. Hopefully I can find the sweet spot. Thanks for the help

Chris
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