From your lips to God's ears...In airplanes it is used because it wont support combustion. 225 psi and glowing carbon brakes can do some bad things. I had a rejected takeoff at max gross after an engine rollback, the glowing brakes caused the fuse plugs to blow....you wouldn't want O2 blasting against a glowing brake. All four tires had to be rejected/ replaced along with the inner rims.......which are magnesium....yikes. Brakes were still good!
Nitrogen has its place in tire inflation but standard automotive applications is not it. Automotive tire shops haven't got a clue what the proper procedure is to fill a tire with nitrogen in the first place.