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Old 12-27-2015, 08:03 PM
Thread Starter
Join Date: Dec 2015
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Question TIRE PSI Question

Hi, I love this Forum and all of the info that is available here. I have learned a lot over the years. I currently own a 2013 Jeep Wrangler 4 Door Sport. I recently added a 3 1/2 inch lift and the dealer has talked me into BF Goodrich 35 12.50/18, I have read that most everyone is dropping the PSI down to 28 to 30. Will this give me a much better ride. Also at that pressure can the Jeeps tire sensors be reset to show a new preferred PSI?

As a side question... Is anyone running the tires with the white letters out. Or is that to old fashion? LOL

Thank you,

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Old 12-29-2015, 04:42 PM   #2
terpsmandan's Avatar
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Location: Penn Yan, NY
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Somewhere around here is a way to check whether your PSI is correct with some chalk. As far as letters out, I intend to get some BFG AT's in the spring and I'll be running letters out.

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Old 12-29-2015, 10:43 PM   #3
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Join Date: Jun 2015
Location: Ohio
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Lower pressure flexes more for a smoother ride and bigger footprint in mud, rock, and snow. Higher pressure leads to a rougher ride, but better fuel economy. Low pressure gives you better traction in all conditions EXCEPT RAIN. I believe it was Goodyear or Bridgestone that studied this, but they put a camera underneath a shallow pool with a glass bottom. The camera noticed that the tire with the higher pressure had better traction. With lower pressure, water gets in the middle of the tread and depending on conditions and speed, the tire would have more or less tread on the ground.

Lower pressure grips more of the surface. You want to grip more of the mud or snow, because they're solids, but do you want to grip more water? This is my understanding, anyway, someone may correct me but it makes sense to me.

As for the sidewall, my rule is the rims. If you have black rims, leave the sidewall in. If you have shiny chrome, it's a toss up depending on the rim style. If you have multi colored rims or any shade besides black or chrome, leave the sidewall out.

I have aluminum rims that are black and bare aluminum. My sidewall lettering is out. Post pictures of your rims for us to judge. Keep in mind that everybody and their cousin is blacking out their Jeep. If you're going for a blackout, then do it right.
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Old 01-18-2016, 06:15 PM   #4
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Location: Gainesville, GA
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I have 35x12.5x15 and I'm running them at about 26 psi. The tpms light is just annoying, but the pro cal's don't seem reliable either. White letters in. I had some out before and used to scrub them constantly to try and keep them white and clean. It was a pain.
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