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Old 04-16-2010, 01:15 AM   #61
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^ Yup no worries I am glad you saw it tho! He might of ordered it thinking I sent the right link which I thought I did lol. MY bad good catch!

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Old 04-16-2010, 09:48 AM   #62
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Thanks Guys for the info. Should I just search Air Compressor with battery powered hook up? or any brand name come to mind?

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Old 04-16-2010, 07:25 PM   #63
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Smittybilt makes a nice one (yea, Smittybilt) that runs about $60. It runs off cables. I've had mine a year or so and have had no problems with it. It's model is Superflow MV50.
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Old 04-20-2010, 08:54 PM   #64
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Finally

My tire pressure light went off. It just took my jeep a lot longer to decide to recognize the new tires & wheels. She's just as INDEPENDENT as the other Jeeps I've owned, but I'm sure you have all been exposed to this type of Jeep behavior. (this is why we love them)
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Old 09-16-2010, 05:35 PM   #65
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Thanks

I'm a newb to the Rubicons (had my 06 less than a year) and my Wrangler MT/R's were starting to get cupped like crazy!!! The thing was almost undriveable.....So I'm thinking shock absorbers (was just about to buy some,and i still might)...alignment (which I did)....balancing (all tires 2x). And something as simple as tire pressure never even crossed my mind. Sure enough, Fronts were @ 38psi Rears @ 40psi (only fronts were cupped though) Dropped the Fronts down to 31 & Rears to 33, thing drives like a GEM compared to before!!!! Still minor vibration in the wheel from the already formed cups (or just cuz its a jeep) but unbelievable the difference it made. Almost had to trash perfectly good tires.....

Thanks Again!!!!
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Old 03-01-2011, 03:01 PM   #66
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I am totally confused

I've checked every where, and am more confused then when I started. I have a 2010 wrangler, 2-door. Originally it had the original tires and wheels I now have, LT 285/70/R17's. Door label states 25lbs cold. It now has 25lbs on all wheels that the dealer put in. The tires specify 80lbs. The Jeep will mostly be on the road. Normally 2 occupants. So, 16 inch wheels from the factory,17 inch
now. The new ones are Toyo AT Open Country. Thanks for your help!!! Bob- Just remembered, the tire sensors light is on.
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Old 03-01-2011, 03:18 PM   #67
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I've checked every where, and am more confused then when I started. I have a 2010 wrangler, 2-door. Originally it had the original tires and wheels I now have, LT 285/70/R17's. Door label states 25lbs cold. It now has 25lbs on all wheels that the dealer put in. The tires specify 80lbs. The Jeep will mostly be on the road. Normally 2 occupants. So, 16 inch wheels from the factory,17 inch
now. The new ones are Toyo AT Open Country. Thanks for your help!!! Bob- Just remembered, the tire sensors light is on.
I'm pretty sure factory pressure for the JK's is 35 psi cold. That 80 psi you see on the tire is the Maximum Cold P.S.I. for the maximum weight rating on the tire. You do not need to inflate your tires to the maximum cold pressure. As light as your Jeep is it would cause some serious middle of the tread wear.
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Old 03-01-2011, 04:55 PM   #68
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Ok so I'm confused. I've always read that you should never let air out of a warm tire yet it sounds like you guys do. So I drive down the highway to the beach, the tires are hot, now what do I do?
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Old 03-01-2011, 05:11 PM   #69
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Originally Posted by oakdale bob View Post
I've checked every where, and am more confused then when I started. I have a 2010 wrangler, 2-door. Originally it had the original tires and wheels I now have, LT 285/70/R17's. Door label states 25lbs cold. It now has 25lbs on all wheels that the dealer put in. The tires specify 80lbs. The Jeep will mostly be on the road. Normally 2 occupants. So, 16 inch wheels from the factory,17 inch
now. The new ones are Toyo AT Open Country. Thanks for your help!!! Bob- Just remembered, the tire sensors light is on.
80psi!!!!!!! Holy batcrap! Are you sure?

The door label is for stock sized tires. Your tires will need less than 80 psi for sure, since that's the max, but what the heck load range are those things? I just don't even know what to tell you about those things......
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Old 03-01-2011, 05:13 PM   #70
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Ok so I'm confused. I've always read that you should never let air out of a warm tire yet it sounds like you guys do. So I drive down the highway to the beach, the tires are hot, now what do I do?

dstacy, I think you misunderstood that you shouldn't check the pressure in a hot tire. As air heats up it increases the pressure in the tire. Airing down for the beach is fine with a hot tire. And airing up a hot tire is fine, since the air going in is cold. You just won't get an accurate reading on a tire full of hot air...
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Old 03-01-2011, 05:26 PM   #71
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dstacy, I think you misunderstood that you shouldn't check the pressure in a hot tire. As air heats up it increases the pressure in the tire. Airing down for the beach is fine with a hot tire. And airing up a hot tire is fine, since the air going in is cold. You just won't get an accurate reading on a tire full of hot air...
Most air compressors really heat up the air! sometimes you can't even touch the pump heads without getting burned. If you don't care about a few psi here or there, its fine to air them up at any temp.
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Old 03-01-2011, 07:34 PM   #72
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Sharp things, rocks, glass etc cut a tire much easier if it's super hard.

My 35x12.5's on 8"rims -
Street, 28 lbs
Dirt or Rocky trails, 12 lbs.
Beach sand, sand dunes, 3-4 lbs.
Never have lost a bead yet.

Even at 18 lbs sharp things will cut them.
At 12 lbs, the tire tends to conform to the sharp thing.
At 4 lbs they can cut easy too.

Looking at how much the sidewall deflects doesn't indicate much. At lower pressures they don't really get wider - but the footprint length gets much longer.

Use a knife on your hand - grab the blade with a soft grip. Then grab it with a stiff hand. See which way draws blood.
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Old 07-07-2011, 08:25 PM   #73
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This who PSI thing confuses me and in all the cars I have owned I have always been confused about this I am hoping that someone can help me understand whats a safe PSI for my tires. I read so much information.. Most of what I read is more so for upgraded wheels and tires so I not sure what appies to me and what doesn't... Help.

I have 2011 Wrangler Sport all stock tires and wheels. The tires are 225/75r16 bsw on/off road tires. They are Goodyear Wrangler SR's. The door sticker says Cold Pressure is 35psi, but when I had them set to that it felt like I was driving on rocks. I could feel everything and hear every single noise the jeep made. So I have been dropping them to over the last couple days. I am at 30psi now and it feels like so much better. However, I do lots of long highway drives and was wondering over time is going to lesson the life of my tires? I would even go a little lower if I know that the tires I have could handle it.. Its only me in the Jeep all the time for the most part and on occasion one other adult and small kids so I can see that maxing out the weight and requiring me to add air. I want the Jeep to ride smoother, but I don't want to make it unsafe.. One more thing how can I tell what size tires I am running meaning 30's 40's etc.. Help and thank you.
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Old 07-07-2011, 09:02 PM   #74
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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.
42 PSI is seriously overinflated, borderline unsafe for an unloaded TJ at highway speeds. Not to mention your tires are going to wear HORRIBLY.

General rule of thumb is bigger tires lower PSI. I run my 33x12.5 pro comps at 28 PSI. Based on how stiff of tires they are I could probably go lower.
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Old 07-07-2011, 09:12 PM   #75
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Go with whatever the door jamb says. It is according to the weight of the vehicle not the tire. Mine doesn't have a loaded/unloaded psi. It just says 29psi and that is what they are at.
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Old 07-07-2011, 09:15 PM   #76
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42 PSI is seriously overinflated, borderline unsafe for an unloaded TJ at highway speeds. Not to mention your tires are going to wear HORRIBLY.

General rule of thumb is bigger tires lower PSI. I run my 33x12.5 pro comps at 28 PSI. Based on how stiff of tires they are I could probably go lower.
Woah, I missed the whole second page... nevermind.

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