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Old 03-22-2014, 11:59 PM   #1
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Cooper Discover STT

So I just bought a new set of tires and went with the cooper STT and I was just wondering what psi to run them at to get an even wear. they are currently at 38 psi

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Old 03-27-2014, 03:19 AM   #2
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Good choice of tires! Most use the chalk test to optimize footprint but it does not take into account loading or fuel economy. If you use the chalk test just use highest air pressure that still provides a full footprint. Typical pressures usually hoover around 25-30 PSI for AT and MT tires.

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Old 03-28-2014, 04:12 PM   #3
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yeah i did the chalk test but i am running them at 26 psi now thanks!
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Old 03-28-2014, 05:20 PM   #4
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yeah i did the chalk test but i am running them at 26 psi now thanks!
That's what I run mine at. 17k on them now with even wear all around.
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Old 03-29-2014, 06:49 AM   #5
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Sweet I'm guessing yours is a dd as well, and what size are you tires?
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Old 03-29-2014, 08:52 PM   #6
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Sweet I'm guessing yours is a dd as well, and what size are you tires?
Yep, DD. 32X11.50X15's.
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Old 04-11-2014, 09:07 PM   #7
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Great tires...I've had them for 3 years. 33x12.50x15-on-road at 25 lbs. off-road, run them at 10-12 psi. Never a problem.

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