Hi all, was wondering if it is necessary to install new sensors when installing new tires on the stock rims. They are working perfectly, and I hear they have a battery installed in them, at least that is what I read. And when putting after market rims on, can the sensors from the old rims be reused. I have been trying to google as much info as possible , but I am sure some of you guys have dealt with this. I am used to the older C3,s for which I have had a few, and this is my first C5, with all this technology LOL. Thanx all....JSH