Sir: At the 24K mile mark, you want to closely check the following for wear and end-of-service-life appearances.
1-Like Cody mentioned...check the running surface area of the belt idler pulley for noticeable wear and give it a spin and listen and feel for harshness in the bearings. They are very easy to replace and I have the cross-reference part #'s if needed.
2-I always remove the pie-pan front rotor when installing new tires. Gives you the opportunity to clean and inspect rotor hardware, clean out the spring locator holes in the wheel itself, and clean up the rotor bushings. Contrary to Service Manual jibberish, you do NOT have to replace rotor bolts when doing an R&R.
3-Carefully inspect both wheel spacer tubes. Look for noticeable signs of gouging and wear on each end. Clean thoroughly then roll each spacer on a perfectly flat surface like piece of glass. Will immediately tell you if it is out-of-round from ham-fisted over-torquing of the axle. Put a very light coating of grease on the OD of each axle and the OD of each tube, then reinstall each wheel. Use the torque specs and tightening sequence specifically described in the Service Manual.
4-Also a good time to remove the front plastic belt pulley cover...clean entire area...clean pulley...inspect for any trans fluid leaks and condition of neutral safety switch plug.