Tire wear, what's causing this! ? ?

Special socket. Period.
-They are usually very tight. Almost extremely tight. I have had to use 3/4 inch breaker bar and a 4 FOOT pipe to get the leverage that is often required. I leave the arm on the car, and the car on the ground with only the one wheel off. I break it loose and perhaps several turns before diss-assembling anything. That way the spindle and lower arm stabilize the upper for the procedure.If the arm is flopping around, you may have major difficulties.Forget about impact tools, if on the car. The rubber bushings absorb and negate the impact hammering.If the car is on jackstands, you will need to figure out a way to transfer the screwing torque back into the chassis so that it doesnt fall off the stands and possibly injure you.If the car is on the alignment rack it is usually stable enough to really muscle it.
-When reassembling, be extremely careful in screwing that BJ back in absolutely straight. They can be ornery. And they have fooled me. If going only by feel,they may screw in maybe a turn or two then get tighter and tighter until impossible to continue even with the big bar.You have to keep eyeballing them to prove them straight.I use a bit of anti-seize.If you damage the threads or strip them, you will be shopping for a replacement arm.Or welding the new BJ in;not for the feint of heart.The BJs have proprietary materials inside them that are heat sensitive, and can easily be destroyed during the welding procedure. And then youre back shopping. So, be very, very,careful with the install.
-If your arm accepts the BJ with no fuss at all(This happened to me on one occasion) your arm may have been damaged on a previous install. You may have to loctite it in
-And in the event that your BJ goes in without drama,hallelujah.
-Get the right socket.Period.
-There are three sizes in the Mopar line-up;one for the early As, one for the full-size cars, and one for the pick-ups. Small, medium, large.
May the force be with you,Cheers