[2001Jeep]

Thanks for the response.

I was actually making a joke.

I do have nitrogen in my tires. Costco as standardized on it. I understand that nitrogen helps keep tire pressure longer and it minimizes heating. What i don't understand is that normal air is mostly nitrogen. Does that small amount of oxygen and other elements in air make that much of a difference inside a tire??

By the way, I have not over inflated my tires. Even at a side wall pressure of 35 my Cherokee is really squirrelly especially on the highway. The front tires are only supposed to be at 28 pounds.