Over the last month I've noticed that when I turn the wheel in either direction I can hear a loud creaking sound coming from the front of my car. I took a quick look under my car and I noticed that my passenger side outer axle boot is torn. Could the creaking just be from the torn boot/lack of grease on the axle joint?

I think my best option is to just replace the axle, but I don't wanna miss a different problem while I'm already under my car.

 

You do need to replace the axle with a torn boot, though I'm not sure that's the cause of the creaking.

Is the power steering (PS) fluid low in the reservoir? Is the PS pump belt loose?

 

Do you have cheap coilovers? I have had them creak in the past

 

check your steering rack. the passenger side boot on mine is torn and im sure it still creaks, i just ignore it