41 Iroks on a Rubicon - JeepForum.com
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post #1 of 37 Old 01-20-2010, 06:18 PM Thread Starter
jeepermom
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41 Iroks on a Rubicon

I was thinking about putting 41 IRoks on my rubicon it has a 6.5 lift and
cro mo axles and 4:88s.

Has anybody ever put tires that big on a Rub, if so how did that work for you?

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post #2 of 37 Old 01-20-2010, 06:21 PM
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Good luck on the stock axle's. Takes work, but they will fit! Get a camcorder

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I'm a huge fan of body lifts. In fact were I in your shoes, I would have gone for the 4" body lift and some 2" spacers on stock springs.
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post #3 of 37 Old 01-20-2010, 06:46 PM
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Stock Rubi D44's and Balljoints won't really hold-up to those.
Also depends on how you are on the skinny pedal.

Stock D44's are good upto about 37's if semi built. 37 & up usually requires 1tons D60's to handle and take the abuse as well

Pretty tall vehicle 6" of lift & 41's... might want to consider dropping down to 4.5" springs and the Treks Hy-Line fenders.... they will easily fit 40's with 3-4" lift.

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post #4 of 37 Old 01-20-2010, 06:56 PM
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YOu will be breaking stuff left and right. If you are thinking anything over 37 then you need 1 ton axles.

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post #5 of 37 Old 01-22-2010, 01:08 AM
RogueSpear2023
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You NEED one ton axles D44s are 1/2 ton axles they won't take 41" tires particularly heavy mud tires, you will be lucky if you make it out of your drive way with out breaking something. Plus your brakes, and steering won't handle it either. Even with upgrades D44s trussed and chromed can't take those tires but they could take 37s. The lockers in Rubicon won't take the stress from 41" tires either.

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post #6 of 37 Old 01-22-2010, 08:21 AM Thread Starter
jeepermom
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big tires on a Ruby

Well thanks guys, I had found a great deal on some 41 IROKs,but I guess I'll just pass them up . I don't want to break anything.

I have 35s on it right now and she seems to handle that size just fine.
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post #7 of 37 Old 01-22-2010, 08:24 AM
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This seems like a horrible idea. Stick with some 35's. It is a good bet that a good driver with 35's can do the same as a good driver with 41's. Are you looking to crush cars? I don't understand all the hoopla about 37+tires. Costs to much to run them correctly.
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post #8 of 37 Old 01-22-2010, 08:53 AM
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I would go with the 40" MT/R's. I had them on my 1 ton Ford, and they were great on and off road.

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post #9 of 37 Old 01-22-2010, 09:17 AM
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If you don't get it yet--

The difference between 35's and 40" tires might as well be analogous to the difference between a Geo Metro and a monster truck. You won't make it one wheelin trip on 40's.

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post #10 of 37 Old 01-22-2010, 09:20 AM
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Not sure why everyone seams to think that you cant run a Dana 44 with bigger tires.Im running 42 IRocks and have done some extreme trails and have had no issues.Granted they have cromos.Just use some restraint with the gas.
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post #11 of 37 Old 01-22-2010, 02:48 PM
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Quote:
Originally Posted by Jeepme2 View Post
Not sure why everyone seams to think that you cant run a Dana 44 with bigger tires.Im running 42 IRocks and have done some extreme trails and have had no issues.Granted they have cromos.Just use some restraint with the gas.
tj rubi 44 isnt a true 44 anyway its a 44/30 hybrid.

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Jeepinmichguy is a jerk.
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post #12 of 37 Old 01-22-2010, 09:59 PM Thread Starter
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41 IROKS on a rubi

I thought that the gear on a rubi 44 was a little deeper than a regular 44.
Correct me if I'm wrong.
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post #13 of 37 Old 01-23-2010, 09:30 AM
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Quote:
Originally Posted by jeepinmichguy View Post
tj rubi 44 isnt a true 44 anyway its a 44/30 hybrid.
The Rubi 44 is not a 44/30 hybrid.

What do you call a D44 that uses 260 size u-joints which are smaller than the TJ and other late model D30s that use 297 u-joints?

Regardless, I would not run 41" tires on a D44.
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post #14 of 37 Old 01-23-2010, 10:03 AM
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Quote:
Originally Posted by jeepermom View Post
I thought that the gear on a rubi 44 was a little deeper than a regular 44.
Correct me if I'm wrong.
On the newer JK's yes they have a larger ring gear. TJ Rubi's use standard 8.5in D44 ring gears.

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post #15 of 37 Old 01-23-2010, 10:10 AM
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Quote:
Originally Posted by jeepermom View Post
I thought that the gear on a rubi 44 was a little deeper than a regular 44.
Correct me if I'm wrong.
The ring gear on a Rubi 44 is Deeper. The weak points on Rubi axles for large tires are the outer shafts (D-30 equivalent) on the front, ball joints (IMHO good upt to 37" tires), and the factory locker.

I am running 37" tires on my Rubi. Chromo shafts, front and rear, CTM U-joints, 31 Spline outers on custom Unit Bearings, and a VancoPBS Big brake kit to stop them. My weak point is the factory locker. I have spares...

Ball joints can hold up if you drive with finesse. The Steering box is also being pushed quite hard. To make a jump to 40 or 41" tires, I'd swap to a Hi9, or HP-60 set up with ARBs and hydro steering.
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