37 Trail Grappler pressures - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 8 Old 05-13-2015, 12:01 PM Thread Starter
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37 Trail Grappler pressures

Running 17/9 rims and wanted to know what type of pressures your running on the road. I've played around from 25-30 psi but don't really feel comfortable with 25. I'm I just being to cautious? Let me know your thoughts.

JKU with no added armor and no after market bumpers so I'm fairly light right now.
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post #2 of 8 Old 05-13-2015, 01:09 PM
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Ran my 4 door around 28psi around town and 34psi for longer trips.
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post #3 of 8 Old 05-13-2015, 01:22 PM
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I second Jason on the 28 for every day. It'll be fine and it'll ride the best at about that.


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post #4 of 8 Old 05-13-2015, 01:49 PM Thread Starter
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Thanks for the advice guys. Appreciate it.
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post #5 of 8 Old 05-14-2015, 01:10 PM
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Mine are only 35s and they run and chalk good at 28.


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2010 JKU Sahara
Teraflex 2.5 Coil Lift w/ 9550 Shocks
Teraflex Quick Disconnects
Moto Metal 17" 950s
Nitto Trail Grapplers 35x12.5x17
Superchips Flashpaq
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post #6 of 8 Old 05-14-2015, 07:35 PM
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You could chalk test your tires to figure out the correct pressure.

Sure my rig has seen the trail, but I wheel it like a soccer mom looking for a parking spot at Nordstroms.
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post #7 of 8 Old 05-14-2015, 07:53 PM
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Run mine at 26-28 psi. Drove on them to Moab 2x like that. And I'm 2000 km away. So between the 2 trips one of which also went to Death Valley. I put over 10500 hiway km no problems. Plus daily drive it.
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post #8 of 8 Old 05-15-2015, 06:37 AM Thread Starter
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Quote:
Originally Posted by kkuntz01 View Post
You could chalk test your tires to figure out the correct pressure.
I did chalk them, Even down to 25 PSI only half of the outside lugs were touching. 28-30 I'm barely touching the outside lugs.

It does run much better on the highway at 28 - 30 I will say. They are not as mushy
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