....Have the 2010 Speed since Nov 09, before to long will be putting on second set of Tires. Any thoughts on replacing the TPMS valves with the new tires. Are there batteries in units that are replaceable. The original units have not given any problems but just thought since tires are off, that might be good time...Thanks JimB Oh! I wanted to look up any existing discussion on this subject, but when I put in TPMS I got volumes of misc. any help on how to narrow search appreciated...