Author Topic: Can you run 37's on stock yj axles?  (Read 3101 times)

Can you run 37's on stock yj axles?
« on: 10/05/09, 08:34PM »

Offline Kong

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I was just wondering what the majority opinion was on this. I have 33's now and since my rig is no longer a driver I was thinking about tryin it if I came across a deal. I'm pretty sure I'd be okay to run 35's but I've gotten different responses as far as 37's so I thought I'd ask. Everyone gave me crap for puttin 4.56's and a locker in the stock axles and I've been runnin that for about two yrs now just fine!
Thanks,
Rick

Re: Can you run 37's on stock yj axles?
« Reply #1 on: 10/05/09, 10:17PM »

Offline Fred

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What Axles are under it? I would say no

Re: Can you run 37's on stock yj axles?
« Reply #2 on: 10/05/09, 10:26PM »

Offline willysman22

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There are alot of variables to consider.
Tire and ground pressure
slip torque(the torque needed to break the tires loose)
terrain
driving style
tire and wheel weight
axle condition and ratio
I would say 33's are going to be the safe limit with dana 35c and d30 axles,but you may get away with more if you drive it easy.
80' short-bed Toyota, Lexus V8, yota' stuff
09' Suzuki Kingquad 750AXI
48'Willys CJ2A
18' Jeep JLU Sport HT

Re: Can you run 37's on stock yj ax
« Reply #3 on: 10/06/09, 11:45AM »

Offline 91YEEPER

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definately not on the REAR axle, look at it funny with 31's and see what happens...

he D30 in a different story, depends on what you want to do with it.

check this out, this is my old YJ.


http://www.jpmagazine.com/techarticles/drivetrain/154_0601_jeep_drivetrain_components_perfect_30/index.html

Re: Can you run 37's on stock yj axles?
« Reply #4 on: 10/06/09, 04:06PM »

Offline willysman22

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Yeah actually,the d35c is notorious for breaking c clips and shafts.The axle is pretty well balanced for strengh,everything is light duty,with an enphasis on LIGHT.Housings will flex also and cause problems.If you keep it open,stay out of the throttle,and keep the tire size to 31 -33 you might make it.I personally would not install tires any larger that 31's like yeeper said,but I have seen them stand up to 34's and a locker for awhile too.
80' short-bed Toyota, Lexus V8, yota' stuff
09' Suzuki Kingquad 750AXI
48'Willys CJ2A
18' Jeep JLU Sport HT