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Old 08-06-2014, 06:24 PM
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Tire pressure question

So, I just had the tires rotated and the tech put 36 in the front and 38 in the back.. Knowing that probably isn't right, I am deferring to the jeep fam for confirmation.. Plus, I am driving from NY to DC this weekend and would like optimal pressure for mpg and tire wear.

Granted, I know I will have to change the tire pressure when the winter comes (I keep 32 in them) but for the summer months and long hauls I am curious.

I have 255\70r15's on her (stock tires were the fortera 17's)
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Old 08-06-2014, 06:59 PM
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Re: Tire pressure question

Spec is 36, I believe...just look on your driver door frame for the sticker. I personally run 38 all around. My preference.
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Old 08-06-2014, 07:13 PM
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Quote:
Originally Posted by Jim_in_PA View Post
Spec is 36, I believe...just look on your driver door frame for the sticker. I personally run 38 all around. My preference.
Thanks.. I usually run 34 or so but will check the door.. I just thought that it was weird to have more in the rear than the front and that it should be uniform.
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Old 08-07-2014, 07:56 AM
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Re: Tire pressure question

Quote:
Originally Posted by Chunderboy View Post
I just thought that it was weird to have more in the rear than the front and that it should be uniform.
Depends on the vehicle. Unless there are special needs, I use what is on the door sticker.
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Old 08-07-2014, 09:06 AM
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Re: Tire pressure question

Quote:
Originally Posted by Chunderboy View Post
Thanks.. I usually run 34 or so but will check the door.. I just thought that it was weird to have more in the rear than the front and that it should be uniform.
34 is pretty soft for a vehicle of this weight and for the tires on it. 36 all around is the factory spec, I believe. As I mentioned, I like mine at 38 cold which puts them right about 40 when warmed up for my predominately highway driving. I'm getting my NT421Q tires installed next week and will likely stay the same. Discount Tire recommends 37 in them so my nice round 38 should also be just fine...but how it feels will determine that in the end.
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Old 08-07-2014, 09:10 AM
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Re: Tire pressure question

I have 35 in them now and they feel a little soft around tuns, but not too bad. I am going to up it to 37 (cold of course) and give it a go. As for special needs of differing tire pressures, would towing be one of them?

No towing in my future...just highway driving for the most part.
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Old 08-07-2014, 10:56 AM
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Re: Tire pressure question

I have a '12 with the 18's and my door sticker says 33 all the way around.
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Old 08-07-2014, 11:23 AM
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Re: Tire pressure question

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Originally Posted by Chunderboy View Post
As for special needs of differing tire pressures, would towing be one of them?
Carrying extra weight, long distance inter-state, I up it; driving in the sand it gets lowered. No set rules that I know of.
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Old 08-07-2014, 11:30 AM
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Re: Tire pressure question

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Originally Posted by peckmv View Post
I have a '12 with the 18's and my door sticker says 33 all the way around.
Mine does too but I run 37 year around. Gives me better ride, tire wear, and mpg. Bought a Morose Racing Digital Tire Gauge to set my tires right on the money.
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Old 08-07-2014, 11:43 AM
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Re: Tire pressure question

Yea, I just picked up a digital gage to help with that. My air hose system off my shop is reasonably accurate, but not perfect.

To the towing question, yea, you want a little more in there to support the load, AFAIK. I subscribe to the same thing that 46er mentioned...
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Old 08-07-2014, 10:27 PM
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Quote:
Originally Posted by 46er View Post

Carrying extra weight, long distance inter-state, I up it; driving in the sand it gets lowered. No set rules that I know of.
Running about 230 miles plus 3 passengers and bags. I think 36/37 is rigjt move.
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Old 08-07-2014, 10:29 PM
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Quote:
Originally Posted by macfan View Post

Mine does too but I run 37 year around. Gives me better ride, tire wear, and mpg. Bought a Morose Racing Digital Tire Gauge to set my tires right on the money.
How accurate is that compared to the regular guage? And by regular I mean the standard metal one with the sliding white measuring stick.

Like this or u prefer the digital for accuracy?

http://www.jegs.com/i/Moroso/710/895...FVJo7AodVEwAdw
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