4th Gens have 5 TPMS's. I run snows on steels and have a switch to turn out the light. You can also get extra TPMS's with the snows but they will need programming. That's expensive twice a year at the stealer. Some tire shops do this for free but not around here. Ask around before you buy. You can also program it yourself using an ATEQ Quickset. Check the link in my signature for the right thread.