In response to Al Buckner and his letter on nitrogen. Yes Al, you will probably get along just fine on your tires filled with good old air just so long as you don’t run them over five years and you keep the pressure “topped off.” And, as you know, topping off is a regular maintenance item for tires filled with the normal nitrogen/oxygen mix.
However, sometimes that “topping off” gets overlooked resulting in tires running with low air pressure. You see the end result every day with parts of tires spread all along the highway. Yes, air is 80 percent nitrogen and 20 percent oxygen and it is the oxygen that leaks out. Get that $29 nitrogen fill for all five tires and the next time you go to “top off” you will find that your tire pressure has not declined. Cheap insurance for you and your family.
And then, ask yourself, why do so many new cars come with nitrogen fill? Why does NASCAR use nitrogen? Why are airplanes required to use nitrogen? Why are some of the largest tire distributors in the U.S. using only nitrogen? There are many good reasons and many good answers.