I have a 98 xj and my drivers side front tire is wear on the outside. When I make a sharp turn something pops any ideas on what it could be and how hard it is to change?

 

Post a pic of the tire. You could have a bent tie rod, bent axle, worn ball joints, or even a bad tire causing the wear. As far as the popping noise, it could also be from bad ball joints, worn tie rod ends, loose track bar brackets, or a loose steering box.

 

track bar had the same thing is the noise right under your feet kinda like it sounds

 

Trackbar or frame mount for it check for cracks and tighten the bolts on everything

 

LMFAO, wow... ok, jack it up, grab the wheel, find out where you can wiggle it at, my bet is ball joints.

 

Also, a picture of the wear on the tire would help.
But mainly, get it up in the air and start wiggling.

 

Great pic. Very helpful for me. Thanks

 

I knocked mine out of alignment and I'm getting bad tire wear now.
Popping could be a number of things though.
Start wiggling stuff lol