The most often neglected maintainence chore
As we all know, virtually everything in this world of ours eventually suffers from molecular fatigue and ultimate breakdown. Hydrogen and Oxygen are no exceptions. Deflating and re-inflating your tires once a year or every 7,000 miles will help to maintain pressure longer preventing premature tire wear, restrict the common occurance of "flat spots" (from extended storage) and also greatly delay the inevitable "rubber rot". Don't forget to change out that stagnant and fouled air once in a while!