When offroad, does it really bounce so much? - JeepForum.com

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post #1 of 19 Old 06-20-2008, 07:04 AM Thread Starter
esad_b
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When offroad, does it really bounce so much?

Well ive had my TJ now for 2 years.. all stock except 30" M/T tires. My question is when i go offroad the thing bounces around so much it drives me crazy, i went into a little trail just the other night and i felt like turning around because i was being thrown in the seat.

Im just wondering is that normal? Because my Jeep seems to be stiff on/off-road. Everytime i see another Jeep and if they hit a bump it seems like they dont get thrown around like that or that they take the hit a lot better than me.

I really dont understand what the issue is, i know im not driving a Cadillac but whats up with the stiff *** suspension? Also what would be a recommended PSI for my tires? Their Yokohama Geolandar M/T + im running them around 29 PSI.



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post #2 of 19 Old 06-20-2008, 10:29 AM
ONEMORE2
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With your tires when off road get the PSI around 18 it will help, I wouldnt go any lower or you may pop a bead.I have 32"s and when of road I run around 12-15 psi

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post #3 of 19 Old 06-20-2008, 10:51 AM Thread Starter
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Well i would hate to pop a bead, i really dont think i will even go close to 18psi then, maybe ill stay above the 20's mark. Is there still a chance of popping a bead?


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post #4 of 19 Old 06-20-2008, 10:57 AM
Morgen251
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You'll be more than safe around 12-15 PSI, without risk of popping a bead.

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post #5 of 19 Old 06-20-2008, 11:17 AM Thread Starter
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Quote:
Originally Posted by Morgen251 View Post
You'll be more than safe around 12-15 PSI, without risk of popping a bead.
more safe at 12-15psi than like 24psi? Is that what your saying?


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post #6 of 19 Old 06-20-2008, 11:21 AM
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At 15 psi you will not pop a bead, just wondering though, hows your driving style? do you go fast through trails, or what kind if trailing are you talking about?

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post #7 of 19 Old 06-20-2008, 11:36 AM Thread Starter
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Im extremely slow, take my time. and make sure i dont damage anything on my baby lol.

Well this trail was pretty beat down as in others driven on it so it was fairly flat but it was still bumpy as hell and that's why it was driving me nuts because i could of just imagined what would it have been like it was rocky. Most trails i try to go into dont involve rocks anyways its all dirt/mud but still bumpy


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post #8 of 19 Old 06-20-2008, 03:58 PM
Morgen251
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Quote:
Originally Posted by esad_b View Post
more safe at 12-15psi than like 24psi? Is that what your saying?
No, I said you will be MORE THAN SAFE at 12-15 psi, not MORE SAFE. You'll have much better traction at lower PSI, and your risk of slipping a bead is miniscule.

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post #9 of 19 Old 06-20-2008, 09:19 PM
sahara tj
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You'll be fine at 15 psi. Just make sure you have a way of airing up before hitting pavement. If not keep it under 50 mph.
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post #10 of 19 Old 06-20-2008, 09:26 PM
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I air my tires down to 8 psi when off road, and it helps a lot with traction.

I only pop a bead about once every 5-6 trips out (if that), and I have all the supplies to get it re-seated.

The best thing you can do for offroading is to buy a cheap air compressor, mount it under the hood, and run lower pressure on the trail.

The lower the better, period. I stick to around 8 because if I run any lower I blow a bead more often than not. I air down to 5-6 for really tough climbs, but generally stick to 8. The air compressor I run cost me about $125 or so. That comes with a nice holding bag, air line, and a few attachments for airing up soccer balls, etc.

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post #11 of 19 Old 06-21-2008, 02:54 AM
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I have a tire deflation chart, that goes by tire size and gross vehicle weight, that states if you are running 30x9.50R15, and ~3000-4000lbs. you should be running anywhere from 10-12psi off road.

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post #12 of 19 Old 06-21-2008, 04:34 AM
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Air down it's the way to go. I've had 4x4's for a very long time think I bought my first in 1989. I never aired down in the bigger trucks. The only time I've had my jeep out I didn't. No way of pumping them back up. But you can bet I will this time, my kids bought me a compresser to mount on the jeep.... I'm going to run between 10 & 12.
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post #13 of 19 Old 06-21-2008, 05:22 AM
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After airing down, try disconnecting the fron sway bar as well and see how much more fun it becomes. I never drive at street pressure offroad, my compressor is hard mounted in the engine bay. Normally run between 12 / 18 psi (depending on the conditions).
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post #14 of 19 Old 06-21-2008, 08:10 AM Thread Starter
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Well im gonna have to air down next time down, but yah the problem is about airing back up once i came out id have to go find a pump or something that has air. Well ill guess ill have to try that next time then

thanks guys!


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post #15 of 19 Old 06-21-2008, 07:52 PM Thread Starter
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what kind of PSI would you guys recommend for pavement? Right now im at 29.5 or so? Is that good?


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