The benefits of maintenance are clear.
Oil Change:
Clean, engine lubricating oil vs. Dirty oil, and possible premature engine wear
Little to no engine deposits vs. Engine deposit buildup
Smoother running engine and peace of mind vs. Possible engine failure
Full synthetic motor oil generally has a longer change interval vs. Conventional oil
Tire Wear and Pressure Check:
Safer tires vs. Possible flat
Better road traction vs. Longer braking distance
More reliable tires vs. Less reliable tires