JK / JL and 37s

Midnight LJR

In search of Rubicon flares.
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Do JK’s and JL’s have different ball joints than TJ’s.

I thought they were the same and am surprised that 37’s seem to be the standard. There was another thread about how 37’s are the new 35’s. This got me thinking.

How does a JK/JL rubicon on 37’s last compared to a TJ on 35’s?

Just curious, I don’t want anything to do with 37 on a tj with stock axles. :)
 
I know JK's for sure have larger ball joints so I assume the JL ones are larger as well.
Most JK's and JL's on 37's probably never see dirt and that's why they can last on 37's (keyword there was MOST).
 
I know JK's for sure have larger ball joints so I assume the JL ones are larger as well.
Most JK's and JL's on 37's probably never see dirt and that's why they can last on 37's (keyword there was MOST).

Ah ok, for some reason I thought they were the same ball joint that makes since.
 
I thought the JK had the same or very similar size ball joint as the TJ, but with a slightly different outer housing.