I would say all the benefits of the nitrogen in the passager car really just don't exist. Air craft-sure, race cars-sure, haul trucks where the tires can get dangerously hot and expand the pressure too much-sure. I just don't see those issues in a car doing 55 down the highway. As a side note- Stella Lynn Gottschalk born 5 lb 15 oz Feb 29th. Travis Gottschalk