Yeah, all of the vehicles I did that with were Toyota and it worked great (4-runner, and Tacoma's).Yeah, TPMS was mandatory beginning in 2008 in all vehicles sold in the U.S. I'm not sure about sticking them all in the spare tire because most of them don't begin transmitting until the centrifugal force is at a certain point equivalent to the vehicle traveling at 20 mph or more. Of course I know Toyota ones will transmit if there's a drop in pressure whether or not the wheel is turning. I think most people just ignore the light on the dash instead of spending over $100 per wheel for parts and labor. I think the designed life was about 10 years though I've seen some last over 12 years and others failing in 8 years; guess it depends how much they drive because the more the sensor transmits data, the more the internal battery drains.