There's no cheap way around this. The sensors are over $100 each plus they need to be reprogrammed at every switch at about $90 a pop. Either put skinny tires on the 17's or run separate steelies in 15 or 16" size and just run all winter with the light on. There's a real ghetto fix that involves making a pipe with 35 PSI air pressure in it with the sensors in it. You will no longer have the assisatnce of the TPMS but you also will never be bothered by the light again. You can see it here:
http://matrixowners.com/?showtopic=78561
