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Old 06-15-2013, 11:12 AM   #1
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Tire Pressure

Hello,
I didn't see any threads on this when I searched. So Ill post it here.
I have factory tires on my new Jeep. They are inflated to the pressure
that the factory or dealership put them at. However according to the
Tire pressure monitoer on my dash board, its about 10 psi higher then
what the doorjam tag says. I havnt checked them with a pressure gauge
yet though.

Just wondering if anyone besides me has noticed that too?

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Old 06-15-2013, 11:24 AM   #2
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If you have an unlimited or higher trim than the sport, it has slightly bigger tires. I have a 2013 sahara unlimited and the pressure is at 40 psi but the door says 35. Just look at the tire itself and always go by that.

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Old 06-15-2013, 11:40 AM   #3
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36 lbs

hi, I have the factory tires 17", and keep them at 36 lbs, just did my first rotation and the jeep dealer set them to 40, however the ride was
to firm for me got a 2012 with auto/power package and 5K miles. May
trade for a diesel when wrangler gets it..have fun every day!
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Old 06-15-2013, 03:49 PM   #4
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I think your vehicle manufacturer has those tire pressure numbers on the door jam for a reason. The max pressure stamped on the tire sidewall is exactly that... the maximum the tire manufacturer recommends. It's not what the vehicle manufacturer deems the maximum pressure should be for safe operation. I'd use the door sill numbers.

My '13 Altima came with higher pressure than the recommended pressure.
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Old 06-15-2013, 04:36 PM   #5
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Quote:
Originally Posted by Off Pavement View Post
I think your vehicle manufacturer has those tire pressure numbers on the door jam for a reason. The max pressure stamped on the tire sidewall is exactly that... the maximum the tire manufacturer recommends. It's not what the vehicle manufacturer deems the maximum pressure should be for safe operation. I'd use the door sill numbers.

My '13 Altima came with higher pressure than the recommended pressure.


This: I've made the 'go by the tire lable pressure' mistake before and ruined a set of tires when I had my '93 Shadow. Doorjam said 32, tires said 44, I went 44, and had to get a new set withen 2 months. I just think it's odd that it would come over-inflated brand new though. Still havent put a tire gauge on it though. Got it a little dirty today
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Old 06-15-2013, 10:51 PM   #6
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Just an opinion but I wouldn't trust the TPMS for anything.

From the time I bought mine (09 Rubicon Unlimited, bought new) I have never been able to get the TPMS indicator light to stay off consistantly through a range of tires (stock to 33's to 37's) and driving situations even with adjustments made with a ProCal unit.

It is my opinion that the TPMS is primarily a CYA item for the manufacturers (stemming from the Explorer/Firestone thing a decade or so ago) and an owner convenience item second.

A good quality pressure gauge and door jam pressures for stock tires. Anything other than stock and it's wide open for guessing.
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Old 06-16-2013, 01:30 AM   #7
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Originally Posted by Rtone1583 View Post
Just an opinion but I wouldn't trust the TPMS for anything.

From the time I bought mine (09 Rubicon Unlimited, bought new) I have never been able to get the TPMS indicator light to stay off consistantly through a range of tires (stock to 33's to 37's) and driving situations even with adjustments made with a ProCal unit.

It is my opinion that the TPMS is primarily a CYA item for the manufacturers (stemming from the Explorer/Firestone thing a decade or so ago) and an owner convenience item second.

A good quality pressure gauge and door jam pressures for stock tires. Anything other than stock and it's wide open for guessing.

Sounds good to me
Thanks!

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