My take on them (if someone disagrees let me know please) is that it’s a good idea to change them at tire change time unless they are still pretty darn new. Mine are now 8 years old and I will be buying new tires in about a year. I would hate for them to start failing after putting new tires on and have to pay for mount and balance on top of new valves. Correct?
You can just break the bead and change them unless it's a Ferd that is banded inside the rim. Freekin Ferds...
