Yes, it has air in it and I keep a portable air compressor in the trunk also. I’m pretty diligent in regards to regularly inspecting my tires for air or other problems
No I haven’t but I bought the truck new in 17 but that is not an excuse ,you should check it at least once a year and better if you check it every six months.
I wonder how often do you check the lights on your vehicles, I notice some pretty expensive vehicles with some kind of light not working like a brake,or turn, or tail light.