37" tires. What is breaking?

[chevymitchell]

Rear axle shaft twisting seemed to be an issue with JKs as well. I know two people with JKURs that ran 37s for awhile then switched to 35s and both of them twisted splines and bent the flange where it meets the shaft.

This is super common for any Jeep rock crawling with lockers. The stock shafts were never meant to take the torque of the 37 and be abused. It’s not a Jeep issue. It’s us pushing passed the designed limitations.

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[InvertedLogic]

This is super common for any Jeep rock crawling with lockers. The stock shafts were never meant to take the torque of the 37 and be abused. It’s not a Jeep issue. It’s us pushing passed the designed limitations.

I agree with that assessment. Neither led to catastrophic failure or anything, but both had to grab some chromo shafts. Hasn't happened again after some new shafts.

 

[chevymitchell]

I agree with that assessment. Neither led to catastrophic failure or anything, but both had to grab some chromo shafts. Hasn't happened again after some new shafts.

Yeah... chromoly’s are in my future, for sure. Just won’t be until after next years trip. Got a lot planned, but I’ll get rid of the front shafts before the rears.

 

[Headbarcode]

Yeah... chromoly’s are in my future, for sure. Just won’t be until after next years trip. Got a lot planned, but I’ll get rid of the front shafts before the rears.

Same here. Towards the end of next summer, my work season will start to slow down giving me spare time to do rcv's front and back and a full set of HD ball joints.

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