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Old 07-07-2014, 02:02 PM   #1
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33 duratrac pressure

Hey everyone I have done 33 duratracs on my jeep with 15" rims just wondering whoever else has this set up what psi they running on the street

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Old 07-07-2014, 02:04 PM   #2
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I have the same setup and run anywhere from 26-29 psi on the road.

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Old 07-07-2014, 02:08 PM   #3
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I have the same setup and run anywhere from 26-29 psi on the road.
That low I have mine at 31 right now
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Old 07-07-2014, 02:18 PM   #4
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The max cold on your 33x12.50R15 Duratrac is 35 psi. Anywhere between 28-32 will give optimum wear and ride comfort. I've owned over seven sets of the same.
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Old 07-07-2014, 02:25 PM   #5
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The max cold on your 33x12.50R15 Duratrac is 35 psi. Anywhere between 28-32 will give optimum wear and ride comfort. I've owned over seven sets of the same.
Ty so much I'll try that out
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Old 07-07-2014, 02:47 PM   #6
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Ty so much I'll try that out
You can also try a chalk test out and see what that yields. Because your optimal pressure varies depending on weight, a chalk test will help you to find the right contact patch for your tire/weight combination. Good Luck!

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Old 07-07-2014, 03:09 PM   #7
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For me, I have them on 26. As Ryan said, chalk test it.
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Old 07-07-2014, 03:40 PM   #8
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The chalk test only optimizes tread footprint. It has zero consideration for load carrying capacity of the tire. Keep in mind the weight of a JK can exceed 5000 lbs.

Safety not footprint should be the guiding factor.
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Old 07-07-2014, 10:14 PM   #9
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33 Duratrac Pressure

I also have the 33X12.5 DuraTracs on 15s mounted on a JK Sport hardtop.

What XTRyan said!!

The chalk test will get you close to the pressure where you are using the maximum % of the tread width on flat surfaces at your vehicles wt. This, in turn will maximize your traction at your vehicle wt. in daily driving on flat surfaces (off roading usually requires some air down). Fine tune this pressure with tread wear pattern measurements at you 5k mile tire rotations.

This test, along with tread wear checks at 5k mile rotations (4 so far) has given me 28 psi as my number. If I go over 30 it wears in the middle and will shorten the tire live. Lower pressure causes the wear to be on the outsides of the tread.

Hope this helps.

Cheers,

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Old 07-07-2014, 11:04 PM   #10
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Quote:
Originally Posted by db1yg View Post
I also have the 33X12.5 DuraTracs on 15s mounted on a JK Sport hardtop.

What XTRyan said!!

The chalk test will get you close to the pressure where you are using the maximum % of the tread width on flat surfaces at your vehicles wt. This, in turn will maximize your traction at your vehicle wt. in daily driving on flat surfaces (off roading usually requires some air down). Fine tune this pressure with tread wear pattern measurements at you 5k mile tire rotations.

This test, along with tread wear checks at 5k mile rotations (4 so far) has given me 28 psi as my number. If I go over 30 it wears in the middle and will shorten the tire live. Lower pressure causes the wear to be on the outsides of the tread.

Hope this helps.

Cheers,

db
Yes it does ty
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Old 07-15-2014, 11:22 AM   #11
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I have mine set at 32 and they are going strong at 40k miles

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