Trailer Tires

Contained Nitrogen and atmospheric air, (under pressure i.e. tires and bottles) are affected identically to temperature. In other words, heat two bottles (simultaneously) of identical amounts of compressed gas, one with oxygen and the other nitrogen. The pressure in both bottles will rise identically. The only advantage to nitrogen in tires, is its larger molecules slows osmosis leakage from tires and lack of moisture prevents rust and corrosion. (The main reason it is used on aircraft struts and tires.) Boyle's law - Wikipedia Nitrogen Truths and Myths – Power Tank A heated conversation when I was teaching Aviation Technology for the university. Also the one about sitting batteries on the concrete or ground.
Wonder why the NASCAR boys and the mining companies with large earthmover tires spend money on nitrogen then?? Not supporting combustion is a plus for the large earthmovers (safety) and no moistures protects rims from rusting but pressure checking is a strictly followed procedure. Have the Nascar crews been bamboozled?