Sadly my Model S 75D hit a nail driving to fireworks yesterday for the 4th. I noticed pressure slowly leaving the tire so I parked in a safe location and made a call to roadside assistance. I was amazed at how quick the service was. They got my car towed to the nearest service center within an hour. Received a call this morning from the service center informed me that the 19 inch Michelin's I was running is not in stock and they would need to order the part. It seems crazy to me that one flat tire has turned into a 2+ day ordeal in which the service center needs to order the part. On top of this, the roadside assistance notified me that they did not have a loaner tire they could come out and put on my vehicle. Has anyone else experienced such a shortage even just for tires? I can understand the service center not stocking replacement parts but the capability to replace a tire needs to be there since these vehicles do not carry a spare.