Do I have tubes in my tires?

[fried1765]

This is the 16.9x28 - RimGuard filled - rear tire on my Kubota M6040. It's tubeless. I will get better pictures when the sun comes up and the temps get somewhere above 15F. This shows the metal stem and metal securing nut.

View attachment 630797

I am surprised that Kubota put rims on your tractor that do not have valve stem guards.

 

[RickB]

I am surprised that Kubota put rims on your tractor that do not have valve stem guards.

More do not than do.