Caterpillar started inflating factory shipped products with Nitrogen tires do to the fact that has the tire heats under use; do to tire loading and tire speeds there is less chance of explosion of the tire carcass.
Now I have never been a proponent of using Nitrogen in automotive tires and trailers. Do to the supply issue of where would I get Nitrogen to replace the Nitrogen I would lose in the tires over time. The average users who will inflated his tires will use air supplied by a compressor at a service station and or his home compressor. They will not go to the bother of storing a 40 Gallon or larger bottle of Nitrogen to inflate his/her tires.
So to me the Nitrogen issue is a mute point. It is nice to have but I will never take my trailer to a tire dealer or RV store to inflate the tires with Nitrogen when the inflation pressure is down. It is more harmful to the tire carcass to run under inflated than to run air in them.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67