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Old 10-26-2012, 11:50 AM   #1
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Tire pressure incorrect from dealer?

I picked up my 2013 JKU on Saturday. Ive put about 300 miles on it already, and I noticed randomly today that the TPS was reading 40 and 41 PSI, and its actually about 20-25 degrees cooler today than it has been. This seamed high to me so I checked the sticker inside the door panel and it says the tires should be at 35psi.

Any idea why mine are inflated so much? It came with Goodyear Wrangler tires if that makes any difference. Is there anything that could have been damaged running this high? At 300 miles, I dont know that the tires will really wear all that unevenly if I get it corrected. Maybe I'm wrong.

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Old 10-26-2012, 11:54 AM   #2
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Dealers and tire installers seldom care what the pressure is. More times than none after getting home from new tire install my pressure was random. I had a tire at 50 psi once. Go with the door tag inflation rate of 35psi if running stock size tires.. Over or under inflation will cause wear issues.

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Old 10-26-2012, 11:55 AM   #3
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My 2013 JK had 45lbs I discovered after a stiff 60 mile drive home. I lowered to the recommended 37. I think they all leave the factory high for unknown reason. Doubt you hurt your tired.
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Old 10-26-2012, 12:05 PM   #4
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yeah my ride has been a little rough, but this is my first Jeep, so I thought it was just part of the experience

Thanks for confirming my suspicions though, my ride home should be a little nicer
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Old 10-26-2012, 02:01 PM   #5
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Now I'm going to have to double check my door tag. I could have sworn it said 39 was the recommended pressure. When I picked it up it was on 42 but it's dropped as the weather has cooled.

Also be sure to check them after oil changes. I had one shop always air my TJ's tires up to anywhere betwen 35-45 when the sticker clearly said 29.
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Old 10-26-2012, 04:54 PM   #6
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they just want you to get better mpg so you will tell everyone that after getting your oil changed your mpg went up lol.
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Old 11-06-2012, 06:40 PM   #7
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Door tag on 12 JK is 35.
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Old 11-06-2012, 08:12 PM   #8
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Mine were high from the factory as well.
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Old 11-06-2012, 09:40 PM   #9
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WTF? Just adjust the PSI to the correct amount.
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Old 11-06-2012, 09:47 PM   #10
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Old 11-07-2012, 06:09 AM   #11
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Never assume a dealer did anything to prep a vehicle for delivery....
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Old 11-07-2012, 07:50 AM   #12
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Dealer does not check the air in the tires. Way outside their ability.
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Old 11-07-2012, 08:02 AM   #13
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just had my oil changed yesterday, i will have to check my pressure because now that it has been mentioned my wifes liberty was at 45 lbs after her last oil change, the dealer even pumped the tires on my srt-8 challenger up to 40 lbs at the last oil change. not sure why they do that.
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Old 11-07-2012, 08:30 AM   #14
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Are all 2013 tire placards on the door jamb showing 35PSI? The reason I ask is because my placard specs the 225/65 16". The dealer sold it to me with the optional 255/75 17" Sport S wheels and tires and I was just wondering what the 17" wheels and tires call for.

And BTW, my dash displays about 2 PSI higher than my Summit mechanical gauge. I'll just shoot for the difference.

Thanks for the input!
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Old 11-07-2012, 08:35 AM   #15
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Pressure in my tires upon JKU delivery was 37/38.
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Old 11-07-2012, 08:39 AM   #16
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Quote:
Originally Posted by DigDug View Post
Are all 2013 tire placards on the door jamb showing 35PSI? The reason I ask is because my placard specs the 225/65 16". The dealer sold it to me with the optional 255/75 17" Sport S wheels and tires and I was just wondering what the 17" wheels and tires call for.

And BTW, my dash displays about 2 PSI higher than my Summit mechanical gauge. I'll just shoot for the difference.

Thanks for the input!
My JKU sport S had the 17" wheels standard and it says 35 on the inside of the door.
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Old 11-07-2012, 08:40 AM   #17
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Quote:
Originally Posted by DigDug View Post
Are all 2013 tire placards on the door jamb showing 35PSI? The reason I ask is because my placard specs the 225/65 16". The dealer sold it to me with the optional 255/75 17" Sport S wheels and tires and I was just wondering what the 17" wheels and tires call for.

And BTW, my dash displays about 2 PSI higher than my Summit mechanical gauge. I'll just shoot for the difference.

Thanks for the input!
I have the same thing. The dash shows 37, but both my digital and my old school gauge show 35. I trust the gauge more than the dash.
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Old 11-07-2012, 09:59 AM   #18
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Definitely check the tires after you pick the vehicle up from the dealer. My door sticker recommends 37 in the '13 JKUR. I checked mine cold the day after driving nearly 400 miles home from the dealer. They were all at 47. (It still rode much smoother than my '03)

An installer will often overinflate tires to seat the beads. I guess it's too much to expect a dealer to check the tire pressures before delivery. The overinflation won't hurt anything...unless you run that pressure for a long time, in which case you will notice the center of your tires wearing faster than the edges.
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Old 11-07-2012, 10:07 AM   #19
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Quote:
Originally Posted by Snowren24 View Post
My JKU sport S had the 17" wheels standard and it says 35 on the inside of the door.
Thanks! Sounds like the Rubicon may call for 37psi but the Sport and Sport S call for 35psi.
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Old 11-07-2012, 07:24 PM   #20
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I called the dealer and told him to make sure pressure was 37psi. I picked it up and drove it four miles home. 45 psi on my gage on all five tires. Let it sit and it was 43 so I took it down to 38. I'll have it checked by tire store to see if my gage is correct
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Old 11-07-2012, 08:02 PM   #21
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My Rubicon shows 37 on the door, I run 29 in my 34" KM2's.
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Old 11-07-2012, 08:33 PM   #22
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Quote:
Originally Posted by JerryJeepster View Post
Door tag on 12 JK is 35.
Depends on the JK model. Many different tire styles and sizes are available on JK's right from the factory.

Rubicons are 37 lbs.
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Old 11-07-2012, 08:44 PM   #23
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5 psi is not a big jump. 15-20psi, yes but 5, no. When I check tire pressures during the winter time I will always set them 5psi above spec. Why? Typically your TPM light will come on when the pressure drops 5-10psi below spec. When its cold and the vehicle has been setting for awhile the air pressure will become lower and sometimes the TPM light will come on. To save the customer the hasle of bringing it in just to have 5-10psi of air pumped in I set them alittle higher.
Also, if you drive for awhile the heat caused by the friction from your tire and the road will increase the pressure and cause the display to show higher pressures.
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Old 11-07-2012, 09:08 PM   #24
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2013 rubicon came BF Goodrich TA with 255/75 17 pressure on door says 37# dash gauge says 43#
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Old 12-08-2012, 12:26 AM   #25
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2013 Moab comes with 245/75R17 silent armor and the door says 35.
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Old 12-08-2012, 02:17 AM   #26
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My other ride is a 2010 Kia Soul and was sold to me new with properly inflated tires.Some Soul-Forum members were getting theirs with 50lbs and the answer for why this was occurring was ; from the factory - to prevent flat spots during shipping , some slipped through Pre Delivery Inspection.
I like Moabites bead-seating too.
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Old 12-08-2012, 07:33 PM   #27
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Quote:
Originally Posted by JeepAA1ke
My other ride is a 2010 Kia Soul and was sold to me new with properly inflated tires.Some Soul-Forum members were getting theirs with 50lbs and the answer for why this was occurring was ; from the factory - to prevent flat spots during shipping , some slipped through Pre Delivery Inspection.
I like Moabites bead-seating too.
My Moab had 42lb when I took possession. It rode harsh and I can still notice it transmits everything from the road.
I wonder if these silent armor tires have extra stiff sidewalls? I drove a Sahara, rubicon and my friends 07 X and never noticed every little bump or rock in the road.
Has anyone else tried the new silent armor goodyears?
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Old 12-13-2012, 07:55 PM   #28
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Yeah, my 2013 Rubi came with 41lbs from the dealer. Door says 37 so that's what I set them to. Actually seems to ride a bit better but mileage sucks- 15mpg city so far.
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Old 01-07-2013, 07:02 AM   #29
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I spoke with a friend of mine who is a tire engineer at Bridgestone. He said that when manufacturing new vehicles, the factories set the tire pressure higher to avoid getting flat spots when they sit on the lots awaiting shipment. When the Jeep arrives at the dealer, the dealer is suppose to do the adjustments to the correct specs.

I guess its up to the dealer when or if they actually do this.
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Old 01-07-2013, 07:17 AM   #30
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I don't even go by what the recommended tire pressure is on the door, I go by what it is on the tire.

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