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Old 04-15-2010, 01:11 AM   #31
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15 psi is nothing for offroading, you're not even airing down until you are below 15 psi. 12-13 is fine for most people on the beach and you won't have any problems like the tire coming unseated. For real offroading, 11-12 psi is pretty typical. I take my 35" tires down to 8, sometimes 7.5 or so and I've yet to have a tire unseat.

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Old 04-15-2010, 01:18 AM   #32
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Yea I run mine down to 7 PSI now for offroading. I run 12.5 wide on 8 in rim. Tires don't start gripping until 12psi from what I have found.

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Isn't the JK just a rebodied PT Cruiser?!

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Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 10:14 AM   #33
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Ok, The ride in to work this morning with them dropped to 33 psi, I felt the road much more then when they were are 42. Actually like the ride better at 42 on the hwy more so then at 33.

I think I'm going to inflate them back up to 42 for the hwy and when I off road it, seriously off-road it, drop it back to 33.

I'm taking it to the Texas coast next month and have about 3 hours of hwy driving before I get there.
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Old 04-15-2010, 10:49 AM   #34
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Well I give up after that. You are going to go back to running 42 on the highway and you'll only air down to 33 for serious offroading? Both of those are not only excessive air pressures, they are grossly excessive.

You come here and ask for advice on tire pressure and then after experienced Jeepers provide it, you blow it off and do what you were doing before anyway? Oh well... some folks just don't do well with solid advice even after a lot of time was put into explaining the how's & why's we made the recommendations we did. What a waste of time.
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Old 04-15-2010, 10:55 AM   #35
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^ What he said ^
You should listen to Jerry... There's a reason the rest of us do.

Seriously, try running 33psi and climb some rocks.
Then air down to 10 or 12 and see the difference. You will be amazed.
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Old 04-15-2010, 11:00 AM   #36
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Jerry be nice come on him offroading on anything but a fire road his is going to sink PLEASE PLEASE post pics of you just digging a hole that your never going to get out of. Ohh and BTW please go play in the sand on the beach at 33-42PSI. I am going to be a ass now- why even come on here and ask this question? The 42 psi you get better gas mileage by a hair but either then that YOU DIDN"T BUY THE JEEP FOR GAS MILEAGE, if you do well you're plain stupid. Sorry somebody has got to say it. I am actually getting really sick of you're kind, coming in asking something not getting the answer YOU want then just blowing the rest of us of. I guess it happens but here in lies the problem. When you do get stuck you don't have the balls to tell the people your with that WE TOLD YOU SO on tire pressure. Then that leads you to tell them this is what we told you to run it at and make us look like the douches and your just covering your but since you can't man up.

Sorry sick and tired of the BS this week.
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Isn't the JK just a rebodied PT Cruiser?!

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Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 11:09 AM   #37
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3 PSI rear, 4 PSI front on my 37" Comp Claws for the dunes. 8 PSI rear, 9 PSI front on my 39" Red Dots for the rocks. 35 PSI on the 37s on the tow rig.
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Old 04-15-2010, 11:15 AM   #38
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15! holy crap! Any suggestions for tire pressure for beach jeeping? And, it looks like, I will need to invest in a good tire inflator or compressor...
IMO, this is a necessary tool one should carry at all times. I have 2 air sources in my Jeep. My main unit is a 10lb CO2 tank and if I should ever run out of CO2, I also carry my trusty MV-50 DC air compressor.
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Old 04-15-2010, 11:24 AM   #39
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Guys, I'm very appreciative for the advice! believe me. However, I'm just saying it drove better on the highway inflated to 42.

And no, I wouldn't blame anything on you for advice, I take responsibility for my own actions. Don't be so judgmental about me, I'm just giving my honest opinion.

I'm getting use to making a transition from a sports car to a jeep. So, Please, be patient with my questioning.
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Old 04-15-2010, 11:29 AM   #40
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Since you are a self-admitted newb to Jeeps, wouldn't you think that the many collective years of experience of people who offered you help in this thread just might know better what tire pressures are correct to run for Jeep-size tires and for vehicles with the weight of a Wrangler?

Let me say this again again... I don't dare what you think, 42 psi is WAY excessive for the street and that is just going to cause uneven tire wear. And 33 psi is WAY excessive for offroad use. I won't repeat the recommended pressures again, they are described multiple times above.

I'm done here, do what you want.
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Old 04-15-2010, 11:31 AM   #41
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We are patient VERY lol. I have a road race car too. Do I run my road race tires above 33 no they actually sit right around 28ish. There is no possible way your jeep ran smoother at 42 PSI. It can't and wont. It might have moved better ut then again we are talking about 2-3in of your tire tread actually touching ground while moving. Your going to wear out the centers of your tires FAST.
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 11:38 AM   #42
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Jerry, please, I don't just think you experienced jeepers know better, I know you do! thus all the stupid newb questioning. I'm taking baby steps here.

I say it felt like it drove better at hwy speeds, over 65mph. I could feel the roll of the tire more so obviously more tread is touching the road, just felt smoother inflated more at higher speeds.
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Old 04-15-2010, 01:58 PM   #43
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Put another 20 mi on them at 33 and the more I drive it at that the more I like it!

I will be dropping the tire pressure for off roading at the beach, as suggested by people who know better then I.

Any suggestion for an air source that's not too expensive, something under $100.00

Thanks so much for all this information, and Jerry, JD, even though you feel like doing this or worse! You guys got status, and I recognize this.

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Old 04-15-2010, 02:03 PM   #44
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You'll like that more appropriate tire pressure, good decision. Could any of this extra-high air pressure confusion have come from the tire's air pressure information that is molded onto the tire's sidewall? If so, I'm happy to explain the air pressure information located on the sidewall and what it is for. The air pressure on the sidewall is not intended to indicate the correct air pressure to use for the average vehicle.
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Old 04-15-2010, 04:12 PM   #45
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You'll like that more appropriate tire pressure, good decision. Could any of this extra-high air pressure confusion have come from the tire's air pressure information that is molded onto the tire's sidewall? If so, I'm happy to explain the air pressure information located on the sidewall and what it is for. The air pressure on the sidewall is not intended to indicate the correct air pressure to use for the average vehicle.

As stated in post #26
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Old 04-15-2010, 06:04 PM   #46
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just one more time

I'm the one who has the new 2010 Wrangler with the tire pressure light that won't go off. The Old stock tires are P225/70R16, I changed to LT285/70R17. with new 17" wheels. The MAX on the tires is 60psi, the door jam for the OLD tires is 35psi. Without raising a LOT of upset, what do you suggest the psi should be for on road driving? Maybe THAT will turn-off the---- dash light. Thanks ahead of time!!!::
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Old 04-15-2010, 06:09 PM   #47
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To the sensor normally it is around 30-33 psi. My mom's tahoe has the same thing well it sucks FYI. As you have seen us say it rides really well and likes it around 25-30 being the max for a jeep since they are not that big. what are your tires set at now and is the light on?
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 06:51 PM   #48
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Thanks for the reply. ALL the tires are at 31psi, including the spare...
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Old 04-15-2010, 06:57 PM   #49
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Well then if the sensor is still on just add air til the light goes off. Check it- I am betting it is going to go off at 35 psi. then take it to your dealer and go hey can you reset the psi sensor to 25-28 psi. that way you have some room and also the jeep will ride butter smooth.
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 07:17 PM   #50
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THANKS, I'll try that... I've had 4-Jeeps, still gotta luv them...
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Old 04-15-2010, 09:48 PM   #51
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Sorry for the delay Jerry.

Would that be the max load single and double info? That's the only thing that mentions a psi and both are (80psi).

Yes please continue.
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Old 04-15-2010, 10:16 PM   #52
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The tire pressure on tire's sidewall is only there to indicate its maximum safe air pressure and that is to be used only when the tire is supporting its maximum safe load. Our Jeeps are typically only 1/3 to 1/2 of a tire's safe working load so the tire should never be inflated to the pressure indicated on the sidewall for a normal passenger vehicle.

The proper pressure for any particular tire depends entirely on the vehicle weight. The same tire would need to be inflated to different pressures for different vehicle weights... there is no single correct tire pressure for any particular tire or tire size, that (again) depends entirely on the vehicle's weight. That is why the door jamb gives two different PSIs for the tires, the lower of the two pressures is for a lightly loaded vehicle and the higher pressure is used when the vehicle is fully loaded to its max gross allowable weight.
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Old 04-15-2010, 10:23 PM   #53
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Ok, if it is 1/3 to 1/2, then the 33 recomended is still too high. You had mentioned in pervious post that you keep yours several ponds lower then 33. Perhaps I should creep mine down a bit more?

Also, on my MTR Goodyears I can't find a max pressure listing.

Just a line that mentions max single load and double load and both state (80psi). Any low down on that?

One last question, can you recommend an air compressor that is jeep freindly?

Thanks.
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Old 04-15-2010, 10:32 PM   #54
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Yes I am running at 27 right now. All 4 tires are at that. I have no worry of slipping a bead. I have ran my tires at 8 psi to on the road up to 60 mph and it never slipped either. So turn them down to 25 psi and the jeep will feel a ton better.

To the pump do you have a costco near you? All you need is a simple compressor that is built for DC power. They run about 50 bucks.
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 10:43 PM   #55
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I'll pressure them down a bit then over the weekend and give it a go.

No, Costco but a Hell-Mart. Just a basic compressor is what I'm looking for then, perhaps one with jumper cables. Good start man.

Thanks again.
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Old 04-15-2010, 11:04 PM   #56
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You can get the mini clamps like battery cables but smaller. Let me find the link hold up
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-15-2010, 11:09 PM   #57
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Quote:
Originally Posted by ccain View Post
Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-16-2010, 12:46 AM   #58
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Avoid any compressor that plugs into your aux power port (cigarette lighter) as they will be painfully slow to refill big Jeep tires. Those that have battery clips (because they pull more amps than an aux power port can provide without blowing a fuse) are far more likely to put out more air volume which is what you need to refill big tires.

Pay no attention to the cheap Walmart or Autozone air compressors screaming about how high of a pressure they can pump to, the tiniest compressors can eventually pump a small tire to a very high pressure if you have a lot of extra time to waste. A compressor that can pump out a large volume of air at a lower pressure is what you need, our tires don't need high air pressures.
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Old 04-16-2010, 12:48 AM   #59
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OOPs wrong one. Sorry Jerry yea get the one with the battery clips on it!
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-16-2010, 01:01 AM   #60
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OOPs wrong one. Sorry Jerry yea get the one with the battery clips on it!
Whoops sorry, I didn't even know that's what you suggested, I wasn't recommending against the cigarette lighter type of compressor in response to your suggestion. I know you know compressors well enough.

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