I'm shopping around for new tires, and at least one vendor is adding a "TPMS Rebuild Kit" to the cart by default. For a set of 4 tires, this adds $30 to the out-the-door cost. However, the item can be removed from the cart which leads me to believe it may not really be needed.
This is the justification given for the part on the vendor's site:
Rebuilding the valve portion of the TPMS sensor insures an air tight seal and reduces the chance of early sensor replacement due to wear and corrosion of the components exposed to the environment.
This is the first car I've had with a TPMS, and the first time I've done a four-tire replacement for it. I did have to replace one tire early on due to road damage, but don't remember any mention of "TPMS Rebuild" at the time.
Is this something that's really needed for every tire change, or should I only worry about it if I'm actually experiencing problems with the TPMS?