Front end constant wobble 2008 kia sportage. I have replaced tires, rims, struts and had 4 alignments. I'm at 80,000 miles and it has gotten much worse. Pulls hard to one side.

Possible sway bar bushings & a good one that is often overlooked, try rotating the tires WITH THE HUBCAPS. good luck

Sounds like wheel balance, check front wheels for loss of weights outter and inner rim, alloy wheels have sticky weights steel rims have clamp on weights either can be lost....say if you clip the kerb/sidewalk or just through centrifugal force. A garage will check wheel balance and attach weights if needed.

Yes, the Caster/Camber is set by the 2 lower bolts on the Strut.

Check that the front tires are not out of round by putting on a spin balancer and observing for 1/4" or more of wobble in the tires, or a bent rim.

This could be a few things, first try switching a rear tire to the front and see if that helps, you may have bent the rim but you would need to look at it and see is the rim is bent then look at the tie rod end to see if its bent, you could have bent the strut or lower control arm too. i would take a look at the tie rod end and see if its bent, here the thing, you say it wobbles and pulls, a tie rod end or strut or control arm will make the car pull but not wobble, a wobble would be caused by a bent rim or tire witth a bubble and this can make the car pull, tire putting the spare tire on and see if it still pulls and wobbles, if it doesnt then you know its the rim or tire, hope this helps.

have the front wheels balanced

Allignment and camber go hand in hand. Do both front and back at same time on all wheels. Check the tow in and tow out. Fitted Bakkie tires on mine and is working good. Make of tire is a big factor, High profile give soft ride and last longer, low profile give hard ride and do not last that long.

Most likely cause is a bad bearing but other causes could be the tire needs balancing or a weak tie rod. Try getting a free diagnosis from a Tire dealer who does brakes and alignments. They should be able to narrow down the possibilities.

Hard to tell here without seeing some kinda specs from your alignments. There were some issues on rear tire wear on these. It was mainly inner wear on rear tires and the rear camber specs were beyond the negative end of the specifications(max -2.3). They had a revised +1.0 degree upper control arm to address that. If you are not feeling any rebound in the travel you could have a worn or damaged strut,with this many miles that is certainly a possibility.

Have the tires been removed from the rim and rim spun on balencer to check how straight the bead surface is ? Strut Leaking fluid ? Ball joint or Tie rod bad ? wheel bearing wobble ?