I searched the forum a bit but wanted to see if I could get more definitive answers, or maybe some confirmation on stuff I think I know. Tesla states that it's $75 to change my 21" Turbines out to my 19" Slipstreams. Why so much? Apparently the TPMS have to get calibrated. I asked if that isn't simply done with a few taps on the touchscreen with the newer style Continental TPMS. He got conveniently dumb at that moment. So I decided to try it myself. The few questions are: 1. I plan on using a 3-ton jack and the hockey puck method to do one corner at a time. Barely break loose the lugs on the 21", jack corner, pop wheel off, clean the heck out of the wheel well, hand tighten the 19" with socket/wrench, lower corner, torque lugs in criss-cross order to 129 ft. lb., rinse/repeat for other 3 corners. Does this sound about right? 2. Recalibrating TPMS. I've read the old ones needed to be driven about to get them registered/reading, but the new Continental TPMS which I have simply need to be reset/registered via the touchscreen, selecting the 19" wheel option after resetting them. Correct? Thank you guys!