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Old 05-13-2012, 11:03 AM   #1 (permalink)
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Biggest tires with 80" wheelbase?

What's the biggest tire size people are running with an 80" wheelbase Willys or CJ5 rockcrawler (or similar rig)? I'm on 35's with D44 front and rear on XJ springs- thinking about 37's, just curious what others were running on non-stretched jeeps that still flexed well?
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Old 05-13-2012, 08:56 PM   #2 (permalink)
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Depends on how much trimming you do I guess. I ran 37s Boggers but they are more like 34s on my flattie with a 80" wheelbase. I now run 38.5 Boggers on a 87" leaf spring stretch but there're like a 36".
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Old 05-13-2012, 09:09 PM   #3 (permalink)
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Cool

The biggest Iv ever run on a CJ is a 35 with out stretching it out. They were in the fenders all the time, with about 5" lift.
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Old 05-14-2012, 11:51 AM   #4 (permalink)
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Moving to Willys forum.
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Old 05-14-2012, 01:05 PM   #5 (permalink)
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35's are biggest I've ever run.
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Old 05-14-2012, 01:11 PM   #6 (permalink)
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i have mine stretched to 84" without modifying the body at all, and though i've swapped in yj springs i don't think it is lifted above stock much if any. currently i am on 32" MTR's and considering going to 33's, though i have to say, the other day i parked next to a jeep sporting a brand new set of 35" MTR's and i don't see much of a reason why those wouldn't be awesome on a rig of my size. might require a touch of rear fender trimming.

I think beyond a 35" tire, a more serious stretch would be in order, but i think a mild stretch and a low suspension would work great up to that point.
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Old 05-14-2012, 01:34 PM   #7 (permalink)
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I have 2.5" bds yj springs on a stock wb cj5 running 33" tsls. I've got metal cloak all the way around so 35s would be possible. Given the wb, I wouldn't go over 35 without stretching.
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Old 05-14-2012, 04:28 PM   #8 (permalink)
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80 inch tires before the tires rub eachother
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Old 05-14-2012, 07:56 PM   #9 (permalink)
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38.5 X 11:00 Boggers, rear fenders trimed. Q buckshots (34"ish) when it was stock with some rubbing.
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Old 05-15-2012, 09:49 PM   #10 (permalink)
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Hey Roseburg, Ore. nice looking 3B.
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Old 05-16-2012, 06:56 AM   #11 (permalink)
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Quote:
Originally Posted by CJ3BWILLYS View Post
38.5 X 11:00 Boggers, rear fenders trimed. Q buckshots (34"ish) when it was stock with some rubbing.
Couple of bad ass Jeeps
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Old 05-16-2012, 07:15 AM   #12 (permalink)
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As long as you keep the chassis/body nice and low I don't really think there is much of a limit on tire size vs wheelbase. However, in order to do that you need to move the axles around a little bit to get the tires to clear somewhat fixed points in the chassis.

I kept mine REALLY low with 35" tires, basically only 1" of lift over stock. To do this I raised the front fenders up 2.75" and the rear tubs basically the same amount (and enlarged the rear wheel openings ). The rear axle pretty much HAD to go back 2" to get the front of the rear tire to clear the step on the tub. I moved the front axle forward about 3" but could have probably gotten by with 1-2" if you wanted to avoid all the changes you could.

I wouldn't have any problem going out to 40" tires with enough small modifications to keep the height WAY down.
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Old 05-16-2012, 09:34 AM   #13 (permalink)
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I have had 38" Swamper on my 59 cj5 with a spring over
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Old 03-26-2014, 03:39 AM   #14 (permalink)
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Quote:
Originally Posted by Rooney77 View Post
I have 2.5" bds yj springs on a stock wb cj5 running 33" tsls. I've got metal cloak all the way around so 35s would be possible. Given the wb, I wouldn't go over 35 without stretching.
Randomly found this, do you have the metal cloak rear armor? I looked in your build and couldn't find it?
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Old 03-26-2014, 05:08 AM   #15 (permalink)
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Quote:
Originally Posted by supersize75k5 View Post
Randomly found this, do you have the metal cloak rear armor? I looked in your build and couldn't find it?
Yes I did. It was on a 1980 CJ5 I have since sold. I have some pics if that's what you are after. I had the front fenders & flares, rear corners & flares and the rocker guards. It was worth every penny. I beat the bejesus out of that jeep and flopped it countless times. All it ever did was scratch my craptastic paint job.
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Old 03-26-2014, 09:36 AM   #16 (permalink)
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I know this is a old thread but now I can show a old pic of my junk. This was probably 10 yrs. ago. Still on leaf springs sport'n Micky Thompson Baja Claws with side biters 38.5x1650x15 with a 80" wheel base. At Airport Flat Rubicon trail head. I was near the front of the pack on all snow runs. I run 37" MTRs on the rocks. My new snow tires are 39.5x1350x15 Irok radials. I never got to put them on this year California has a drought and very little snow.
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Old 03-26-2014, 03:27 PM   #17 (permalink)
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I rock crawl on 37's, no problem. I have ran boggers on it, currently Iroks. 2" lift. No rubbing, works perfect.



37" boggers
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