The TPMS kits are actually a good idea, and $5 per kit is cheap. Before TPMS systems, we used to get new valve stems when we bought tires. If you think about it, the TPMS is connected to the stem and you don't want to replace them at the same interval because of cost. The kit consists of seals, a new core and cap and will prevent a potential stem leak in the future (which would require the tire be broken down for repair and then remounted and balanced all over again). Wheels look HAWT by the way!

http://dillaircontrols.com/dill/feat...100k-tpms-kit/