Tire rack explains the benefit of nitrogen fairly well but for normal use and lack of proper equipment at most tire locations it is difficult to realize those benefits.

https://www.tirerack.com/tires/tiretech/techpage.jsp?gclid=CjwKCAiAlfqOBhAeEiwAYi43F8cSzB2igPpW3ptADzniHLP0yIm-rGTNllQMet0dJN7mlYtf2ObukhoC4IAQAvD_BwE&techid=191&ef_id=CjwKCAiAlfqOBhAeEiwAYi43F8cSzB2igPpW3ptADzniHLP0yIm-rGTNllQMet0dJN7mlYtf2ObukhoC4IAQAvD_BwE:G:s&s_kwcid=AL!3756!3!354820920608!b!!g!!why%20put%20nitrogen%20in%20tires&gclsrc=aw.ds