From a safety standpoint, I would recommend getting another set of TPMS sensors for the winter ties/wheels. It's a bit of change, but you might just thank yourself down the road someday. Just my .02.
Check the Field Service Manual for your make model and year. The TPMS location should be shown in the manual. I am away from my FSM at the moment or I would tell you where it is at on a 2010 OBW Limited.