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Old 07-26-2012, 03:31 PM   #1
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Capabilities of a stock TJ with 30" A/Ts

Hey everyone, I'm pretty new to the Jeep community as I bought a '98 TJ only a few months ago. As I read these forums I've noticed most Jeep enthusiasts online are usually all about lifting their Jeeps and doing other things to increase their capabilities; but I also have heard from a few 'saltier' Jeepers in person that really a stock TJ with some good tires can be surprisingly capable. So I'm wondering what you guys think. This will still be my daily driver, but I'll definitely be hitting up the fire roads/logging roads in the wooded areas around my house and perhaps doing some mudding if you guys think I'd be able to. No rock crawling though. I'm looking to get a set of 30's, probably BFG A/Ts, ProComps, or General Grabbers depending on how much money I can save. My TJ currently has 115k on it so I'm hesitant to spend too much money on it. Thanks in advance for your advice.

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Old 07-26-2012, 03:36 PM   #2
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I do have a 2.5" lift on mine but I take my 31 gy duratracs on and in anything I can get my handles on!

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Old 07-26-2012, 03:41 PM   #3
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First of all, even a bone stock Jeep with bald tires is "amazing" compared to any other OEM made 4x4 vehicle. So the right modifications only make them even better and more capable.

Nothing wrong with a TJ on 30's for fire roads/logging roads in the wooded areas. It will still be a good daily driver and ya won't see a drastic mpg drop (compare to 33's or 35's). If I were in your situation, I would slap on some 30" DuraTracs.
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Old 07-26-2012, 03:59 PM   #4
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I 2nd Dextreme's suggestion/opinion. I've taken my stock TJ out to Moab and have had an absolute BLAST with the few times I've been able to go on trail with it. I'm running 31" Silent Armors, but I'm sure the Duratracs are great, too.
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Old 07-26-2012, 04:08 PM   #5
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I'm running 31" Silent Armors, but I'm sure the Duratracs are great, too.
31's on a stock suspension? Isn't 30" the largest tire size recommended on a stock suspension? I've heard any bigger causes rubbing and can really start to limit the travel of the shocks? I know it's only another inch but that's why I'm asking.
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Old 07-26-2012, 04:13 PM   #6
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You can run 31's on a TJ stock suspension. If you ever measure the actual diameter of a 31's, its closer to 30" (not really 31").
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Old 07-26-2012, 04:14 PM   #7
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I did the Rubicon Trail last year with 31's on a 2" BB and disconnects.... scraped my undercarriage quite a bit and mangled my skid and front lower controls arms, but hey.... I made it!
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Old 07-26-2012, 04:24 PM   #8
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Your jeep can do far more on 30" tires than you can very likely even imagine at this point, and probably more even in just 2wd. I remain in 2wd in some terrain that many automatically shift into 4x4 for.

The 2 most common situations AT tires do not do well in are deep snow and deep mud where they turn into slicks. For most dry terrain, AT tires are very good.
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Old 07-26-2012, 04:28 PM   #9
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Quote:
Originally Posted by Red_Roxy View Post
31's on a stock suspension? Isn't 30" the largest tire size recommended on a stock suspension? I've heard any bigger causes rubbing and can really start to limit the travel of the shocks? I know it's only another inch but that's why I'm asking.
Some tire shops, Costco, GY, etc, will not go larger on any vehicle if the mfg does not approve it. Many independent shops will not follow that rule.
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Old 07-26-2012, 04:42 PM   #10
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Thanks guys! A lot of good input so far

Sounds like a set of 30s or even 31s is all I need then!
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Old 07-26-2012, 04:47 PM   #11
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Originally Posted by TnDz TJ View Post
I did the Rubicon Trail last year with 31's on a 2" BB and disconnects.... scraped my undercarriage quite a bit and mangled my skid and front lower controls arms, but hey.... I made it!
Well, looking through your photos it appears you've made a few more mods since then. That is a sweet looking rig, Marine. (from a former Navy Seabee, Hoorah!)
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Old 07-26-2012, 05:39 PM   #12
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I'm on stock suspension with 31's and have no problems. Well, possibly some mild tire rub at full lock (I think that's the correct term) but I haven't actually gotten out of the jeep to look; just going by the steering wheel feedback. I think there's some kind of adjustment (bolt of some kind maybe?) you can make to eliminate the rubbing. I remember reading about that in a thread on here, but I can't recall the exact name of the adjustment mechanism. I'm sure someone else will chime in who knows what I'm talking about...
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Old 07-26-2012, 07:34 PM   #13
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I think there's some kind of adjustment (bolt of some kind maybe?) you can make to eliminate the rubbing.
There is, it's an easy five minute-five cent adjustment when you install 31x10.50 tires on the OE/factory wheels... Jeep Steer Stop Adjustment
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Old 07-26-2012, 08:01 PM   #14
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Well, looking through your photos it appears you've made a few more mods since then. That is a sweet looking rig, Marine. (from a former Navy Seabee, Hoorah!)
Just a few.... and thank you for the compliment....

and I'm RETIRED now.... ahhhhhh... so nice....

BTW... heading back to the Rubicon 24-27 Aug..... CANT WAIT~~~~


You will be pretty darn surprised at what your Jeep can do as is.... then add a few goodies to it and you will be hooked.... wait and see....
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Old 07-26-2012, 11:21 PM   #15
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Wheeling is about traction. Traction starts in the axles. A jeep with 30"tires and lockers in the front and rear axles will out perform an identical vehicle with 35" tires and open diffs any day of the week. Get the jeep mechanically sound, purchase and install an air locker or e-locker in the rear axle, then get some trail gear: tow strap, fire ext, tools, etc. and you'll be off to pretty "smart start" !!
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Old 07-27-2012, 12:00 AM   #16
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Wheeling is about traction. Traction starts in the axles. A jeep with 30"tires and lockers in the front and rear axles will out perform an identical vehicle with 35" tires and open diffs any day of the week. Get the jeep mechanically sound, purchase and install an air locker or e-locker in the rear axle, then get some trail gear: tow strap, fire ext, tools, etc. and you'll be off to pretty "smart start" !!
I beg to differ
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Old 07-27-2012, 12:14 AM   #17
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I beg to differ
x2. And if you have a D35 rear, you would want to put a locker in the front (D30) rather than the rear (D35) because the D35 is WEAK.
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Old 07-27-2012, 12:30 AM   #18
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A Jeep is a great 4x4 daily driver/weekend fun vehicle. It just all depends what you want to do, and how far your willing to take it. I drove a stocker Jeep for a long time when I was younger as I had no $$$, and now I'm just enjoying what I have always wanted to do...Welcome and enjoy!
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Old 07-27-2012, 02:32 AM   #19
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If you daily drive it you don't want geabber red letters. They're heavy and and extremely soft compound with low a lifespan.

I have them, will be getting GY mt/r next set
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Old 07-27-2012, 03:04 AM   #20
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It will still be a good daily driver and ya won't see a drastic mpg drop
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Old 07-27-2012, 03:11 AM   #21
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Originally Posted by TnDz TJ View Post
Just a few.... and thank you for the compliment....

and I'm RETIRED now.... ahhhhhh... so nice....

BTW... heading back to the Rubicon 24-27 Aug..... CANT WAIT~~~~


You will be pretty darn surprised at what your Jeep can do as is.... then add a few goodies to it and you will be hooked.... wait and see....
Hey when your on the Con next month if you see this guy make sure he don't flop it. It's mine the day he comes home. The Rubi font is custom.
Bob
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Old 07-27-2012, 07:11 AM   #22
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Hey when your on the Con next month if you see this guy make sure he don't flop it. It's mine the day he comes home. The Rubi font is custom.
Bob
Will do....
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Old 07-27-2012, 07:38 AM   #23
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The trails will scare you in the beginning as you won't believe the things your TJ is capable of. I had 2" BB with 32" tyres and did absolutely AMAZING things with it. Lockers are great but you really don't need them. Best you can do is fit some proper tyres - M/Ts if you can afford to/don't mind the noisysonsofbitches.

Proper tyres makes a world of difference. I made a bit of an ass of myself the other day when I could not get out of a hole with a slight mud pit at the bottom with my BFG A/T. A friend of mine managed it out with his stock KJ with Maxxiss Muds.

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