Like people havent already said, beat it till it breaks, but it also depends on what you're usually wheeling in? rocks? be careful, its not fun to have to deal with a broken jeep and getting it out of a trail and home, rocks are hard on parts, broke my diff on the first real obstacle on the 7 mile rim trail in moab this summer, d35 with 33's. if you're mostly wheeling through dirt the concern will still be there and the axle still wont last but it will last a little bit longer and be able to deal with a little more abuse on the softer stuff. just have a plan for getting out of the trail and the jeep back home for when you do break your axle!
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