I have a 2006 Jeep TJ X. It now has just over 120,000 miles. The suspension is stock except for a 2" spacer lift. I am wondering if I should replace the Track arm bushings just because of the age of the Jeep. I assume over time the rubber gets hard with some cracking. My Jeep has had a light duty life, very little offroad use, no towing. Mostly driving it around town with the top off in the summer. I'm in New Mexico and have zero rust issues, not even surface rust. If Track Arm is the wrong term please excuse, I forget stuff. My suspension does not feel loose, the ball joints seem good and no slack in the steering, just wonder about dried up rubber parts.