That's why I thought of the tire swap-a-roo. A separating tire on the back axle might not be felt but put it on the front axle and it's a whole new ball game.
The way to inspect front end components is, after a visual inspection, and while up on jacks, grab a hold of the different components and give a good tug. See what you can shake back and forth and feel for loose stuff. This includes the wheel assemblies. Tug them left to right ( like you're trying to turn the vehicle ) and up and down ( while grabbing the top and bottom of the wheel, push the top and pull back. Like you're trying to twist it off.) This will help you find loose king pins and bearings. Feel and listen for big or little "clunks". Look for loose ubolts. Put your hand on them and see if you can move them. Look where the springs attach to the frame for shiny metal or fresh rust. Give a good shake or tug. Put a hand on all your components.
