So I leave work yesterday evening for my 2 mile commute home in my 17 day old D. Half way home a low tire pressure warning pops up. I had never seen it before and because I had not done anything out of the ordinary (no rough roads , construction sites, etc.) it almost did not compute. The warning persisted and may have even escalated in its insistence for me to pull over. I slowed way down and limped home the last half mile. A tire appeared flat, so I filled it with a portable inflator. Took about 25 min to go from 3 psi to 38 (Inflator battery died at that point) The Service Center is also 2 miles away but they were closed and my phone call was forwarded to Freemont. They offered to flatbed me to the Tesla store or a tire shop. I told them to notify the Store I would be coming 1st thing in the morning as long as the pressure held overnight. The Phone service with Tesla was just outstanding. They did tell me that Tesla would not patch or plug a tire....only replace it. I was not looking forward to replacing a brand new rear tire, but I am sure it would not be a first for this sort of thing. Since I could not drive the car I figured it would be a good time for the 2 hour 6.1 Update. That seemed to go smoothly. Woke up to the same 38 psi that was there the night before. Bumped it up to 40 just to be sure. Drove slowly to the Service Center. Half way there the Tire warning flashed up again! This time I could feel the same Right Rear tire getting low. Again I limped into Tesla at 15 mph. Turns out the Sensors were not installed correctly and were letting air out. They fixed it and all is good. As a bonus I discovered that 6.1 tells you specifically which tire is low. Not ground breaking technology, but nice that they upgraded it. Another discovery I made in trying to call the local Service Center is that Tesla purposely de-optimizes google search for new stores (This Service Center has been open for about 2 months). They want time to iron out kinks before making it easy for people to find the name and address online.