in addition to the things bill noted, 02 sensors are rated for 100k will they last longer? yes highly likely but I changed all 4 of mine at 100k because I am in this for the long run it was a $200 maintenance item, I have also done and do all fluids annually brake, coolant, power steering, differentials, transfer case, transmission.
suspension could be worn typically the struts will wear out anywhere from 65k+ I did mine at 80k you can get just the shock portion of the front strut's, mine has air-ride and one of the rear shocks had a slow leak so those were also replaced and the air pump.
I would recommend just getting under it with a flashlight and take a look at everything real good, leaks are my pet peeve so I check mine monthly I also check for anything that looks worn like bushings, u-joints, end links, etc. brake calipers can start leaking so always look behind and under each one while under the vehicle.
you may also want to jack up the front so the wheels are off the ground and check the front wheel hubs for play, hold the wheel at 12 & 6 and see if it "wiggles" there should be no play, then check at 9 & 3 there will be a small amount of play due to the steering but it's shouldn't be excessive if it is the steering components may have wear. also spin each wheel and listen for any weird noise if one sounds different form the other that could be a potential sign of wear. I check mine maybe every 3 months or so it's not really a preemptive item when they go they usually start making noise or they will get loose or a ABS light may illuminate, hence the regular inspection.
*one critical part that can fail unexpectedly is the heater hose's where they "T" at the firewall after years of heat/cold the plastic gets weak and they can just snap off or leak out of the clear blue sky I replaced mine with new ones because I have had them fail in the past this was a preemptive replacement just because the dang things can fail at the most inopportune time.
