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  #1  
Old 04-04-2010, 10:58 AM
Dirt Wag's Avatar
Dirt Wag Dirt Wag is offline
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37" tires?

Is anybody running 37 inch tires on stock axles? Am I crazy for even thinking about it? I off road it pretty hard.

If anybody is - will cutting the fenders up to the rear door be enough? I have BJ's 6" lift.

Anybody have pictures?
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  #2  
Old 04-04-2010, 11:22 AM
Hard Knocks Hard Knocks is offline
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37's on stock axles= BANG!
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  #3  
Old 04-04-2010, 12:15 PM
jeepdreamer jeepdreamer is offline
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Depends...

37s on stock axles cruising the mall...They'll live!
37s being abused on stock axles and large quantities of "go pedal"...yup...toast!
So either adjust your driving style (like I did)
Run 'em till they break
Swap 'em for something else bigger with a large price tag and little worries
OR
Win the lottery!
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  #4  
Old 04-04-2010, 12:39 PM
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blt2krl blt2krl is offline
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I ran 37's on the dana 44's with spool rear end and Detroit up front for 3 years before swapping in one tons. I only broke one u joint and I wheeled Moab twice a year for three year with no issues and snow wheeled every winter. Can it be done, yes. Is it the best setup, probably not. Depending on your budget and wheeling style anything can last to a point.
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  #5  
Old 04-04-2010, 06:30 PM
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Wheeled it a few times like this:

37x12.50x15 SSRs stock '74 J-10 axles SOA/SF 360/QT Lock Right rear.

Then took it apart...been a couple of years now...


Starting back on it this coming weekend.
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  #6  
Old 04-04-2010, 10:44 PM
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86j10 86j10 is offline
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I'm on 37's not only as a dd but also a wheeler. I've had no problems whatsoever. it's all in ur driving style, sure if ur foot is ALWAYS in it something is bound to break just as it is with anything else. it's all about finese and experience. i always find it entertaining in this forum when people talk about how the d44 won't hold up with a tire combo such as a 37" but yet you see em being swapped into other 6cyl or v-8 powered rigs all the time such as tj/yj/cj and they work great. so my ? is why would is it that they work great for those other vehicles but in a little heavier fsj they are all of a sudden the weakest link? i'm curious what others have to say about this.
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  #7  
Old 04-05-2010, 06:57 AM
Hard Knocks Hard Knocks is offline
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I think they become the weak link,due to the extra weight of an FSJ,add in the increased HP and torque and it equals broken shafts.Now Im not sayin that you cant wheel with 37's on the stock axles,Ive done it before.I just have alot more fun on the trails not having to worry if this is the trail thats gonna ruin my day.Another thing to consider is if the rig is also your daily driver,I only say that because in my experience,people that wheel their dd have a tendency to stay off the skinny pedal(ill get it now for sure)while trail only rigs get the snot beat out of them.

Last edited by Hard Knocks : 04-05-2010 at 07:03 AM.
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  #8  
Old 04-05-2010, 08:28 AM
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seventynine seventynine is offline
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I mentioned this in another thread recently here. I have a set of Dana 44s from a Waggy in my CJ-7 with a fuel injected 360. 5.38 gears and full detroits front and rear.

I've been running 38.5 Swamper SXs for a number of years. This is a trail only rig at this point. I abuse it pretty hard on the trails. I have never broken a rear axle. I have a set of spares that I carry with me but I've never needed to break them out.

I've broken a bunch of stock front shafts though. However...not since I went to Superior chromemolly shafts with CTMs. I grenaded a Detroit in the front once and a few hubs. I just use the stock drive flanges in the front now. It's held strong since I went to the new shafts, CTMs and drive flanges. I can't make it any stronger than that

Granted an FSJ is heavier than a CJ and would put a little more stress on the axles but I think you would be fine with 37's if you didn't get crazy with the gas pedal.

The problem with going to 1 ton axles with 37's is ground clearance. You will be hanging that diff on every rock on the trail. You could shave the diffs...it just depends on how much trouble and expense you want to go to....and the kind of trails you want to run etc.

Dean
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  #9  
Old 04-05-2010, 09:41 AM
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Where and how you wheel will be a factor. I twisted the splines and bent the wheel flanges on rear Waggy D44 shafts in my four banger YJ (5.38, 4:1, 35" SS) on the grippy rocks in Las Cruces. I'm not heavy on the throttle, either. I might have bounced it a couple times on a tough climb. Ugraded to Moser shafts in rear, Alloy USA front, and 36" SS TSL and haven't had any problems.
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  #10  
Old 04-05-2010, 04:55 PM
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Bigfoot Fabrications Bigfoot Fabrications is offline
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I have 37" Pitbull Rockers on beadlocks with Detroits front and rear. I am pretty easy on the skinny pedal and so far the only problem I've had with the front end is Balljoints don't last very long. I would think you could clear 37's with your 6" lift, but you'll have to cut alot. I had to cut out way past the wood trim in the front as well as some of the inner fender and to the doors in the rear to clear mine. All I have for lift is SOA/SF.
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  #11  
Old 04-05-2010, 07:33 PM
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I've run HMMV 37s on Crom with J 20 axles. Never hurt the axles but I've twisted 2 stock front drive shafts in half!!!!
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  #12  
Old 04-05-2010, 07:35 PM
EnigmaticEngineer EnigmaticEngineer is offline
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x2 to everyone who says wheel the 37's till you break something then upgrade.

I have run 40's on D44's in the past, welded and spooled (rear and front respectively) and it IS all about your right foot.

I will be running 37's on my 1969 waggy (got a set of Pro Comp X Terrains 37x12.5's for 200 bucks recently with more than half life tread on them) with spools front and rear (axles almost done)

I am not worried about breaking anything. This IS a trail only rig (with the occasional trip to pick up my daughter from school or 7 miles to the grocery store), but not a rock crawler. Just rough dirt roads, moderate climbs and very few rock sections.

In my humble opinion (based on my experiences as a wheeler and builder/fabricator) if you avoid Binding up a wheel (tucked under a rock for example) and don't let your rig Hop then Grab, or spin hard then grab traction, you will be fine.

Everyone who said its all in your right foot is absolutely correct in my opinion.

I've watched friends break Dana 60's/14 Bolt FF's with 35's because they wheeled ignorantly and I have friends with Wranglers (Dana 30/Dana 35's) with 350 chevy swaps and 37's who have never broken Anything climbing the toughest of obstacles.

Its all in the right foot.

Nathan.
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Last edited by EnigmaticEngineer : 04-05-2010 at 07:37 PM.
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  #13  
Old 04-05-2010, 10:49 PM
ThaFrenchy ThaFrenchy is offline
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i run 38s on a dana30,35 setup on my yj ....it can be dun....but you have to change your driveing style thats for sher...
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  #14  
Old 04-05-2010, 11:17 PM
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temps425 temps425 is offline
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I run 36's on D44's but I rebuilt them w/ all aftermarket gear and HD drive shafts, never had a problem...
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  #15  
Old 04-06-2010, 12:00 AM
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Dirt Wag Dirt Wag is offline
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Quote:
Originally Posted by Hard Knocks
in my experience,people that wheel their dd have a tendency to stay off the skinny pedal(ill get it now for sure)while trail only rigs get the snot beat out of them.
I agree - if it shows up on a trailer it's in for a beatin' Why the hell not? Load it up and fix it tomorrow ............... or next week ...... or next month.

My right foot has a mind of it's own.
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1985 GW, 360, 727, NP229, D44, AMC20, HEI, SOA/shackle flip 7" lift, Quick Lok locker rear, Aussie Locker front, 4.10 gears, 37 X 13.5 Interco SS-M16's, Warn Premium hubs, Tuff Stuff 12,000 LB winch, rear disc brakes === stripped down street legal off road toy

Last edited by Dirt Wag : 04-06-2010 at 12:09 AM.
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  #16  
Old 04-06-2010, 09:53 AM
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There are plenty of aftermarket support for D44 axles in FSJs and they are cheap enough where you should be able to run 37s on them with little to no issues, especially if they are built/assembled right.

I'll be running 38 TSLs on a GW D44 front with 8 lug outers and a GW D44 rear with 60 outers and am not worried at all.
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  #17  
Old 04-06-2010, 10:07 AM
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Casey Casey is offline
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Quote:
Originally Posted by ThaFrenchy
i run 38s on a dana30,35 setup on my yj ....it can be dun....but you have to change your driveing style thats for sher...
Take the back way into the mall?




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Carolina Full Size Jeep Club
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Quote:
Originally Posted by Jeepstress
"Go forth and be a tool".

Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.
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  #18  
Old 04-06-2010, 12:00 PM
Hard Knocks Hard Knocks is offline
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Quote:
Originally Posted by Casey
Take the back way into the mall?




Ive seen a locked Dana 35 pushin 38's,break a shaft,rollin down the driveway.No kiddin
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  #19  
Old 04-06-2010, 01:42 PM
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Casey Casey is offline
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Quote:
Originally Posted by Hard Knocks
Ive seen a locked Dana 35 pushin 38's,break a shaft,rollin down the driveway.No kiddin
I've broken two on 30x9.50 Michelins.
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Carolina Full Size Jeep Club
www.cfsjc.com


www.patriotguard.org

Quote:
Originally Posted by Jeepstress
"Go forth and be a tool".

Quote:
Originally Posted by 78 Wagoneer
This year for ECI I got a Jeep. Pretty important upgrade.
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  #20  
Old 04-06-2010, 02:46 PM
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86j10 86j10 is offline
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thats because d35's are POS. i broke an axle on my 06 tj with a mere 300 miles on the odometer on 32's taking off from a stoplight. had it fixed at the dealer under warranty then a year later the spiders went and then another year they went again but this time they took out my carrier and ring and pinion. never had an issue with a d44
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