I've had non-repairable tire damage twice in less than two months! I picked up my new S 90D on 12/7/16 and noticed the TPMS warning when driving home. Since it was cold and snowy and a change in elevation, I figured the weather was the culprit...but every day when driving to work I would have to reset the TPMS warning to remove it from the dash. At first, the tire pressure went down slowly but eventually, it started dropping rapidly and I was having to add air every day. I took my car in on 1/7/17 and found there was a screw in the inside sidewall and it was non-repairable. I mentioned that I'd been receiving TPMS warnings since day 1 and asked them to check their logs but they said the logs only went back two weeks. I ended up having to pay $250 for a new tire. Oh well. Fast forward three weeks to 1/28/17, the day we're selling the other Model S and the TPMS starts going off again. This time, it was the right rear tire and the pressure was already down 10 PSI. I looked all around the tire and after moving the car a bit, I found a large screw in the tread. I took the car into Discount Tire and they said it wasn't repairable since it was such a large screw. Oh well. I bought the tire warranty from them before they looked at it. Since it wasn't repairable, it sounds like the warranty will be covering the cost of the new tire. I've been driving thirty years and NEVER had a flat or a screw/nail in any of my tires over the years. I've had the CR-V for 20 years and taken it off-road, on rough roads, etc. and never had a problem. I find it really odd that I've gotten two tires damaged irreparably in less than two months of ownership. I'm pretty sure the screws are not coming from my driveway as we had three other cars (including another Tesla) which have never had a tire issue in the 7+ years I've lived at the house. I started getting a bit paranoid, wondering if someone at work might not like my new car. Surely that's not the case and I'm just having a bad streak with tires...right? Has anyone else had such bad luck?